Seminars & Tutorials

OTFS Seminar Series (Online) 

Organizers : Shuangyang Li, Weijie Yuan, Zhiqiang Wei, Marwa Chafii, Michalis Matthaiou

Recordings for previous seminars at OTFS-SIG - YouTube 

• News

We are thrilled to announce 2024's OTFS webinar series, organized monthly since March 2024. 

• March 2024, Summary of OTFS and its new developments, given by Prof. Emanuele Viterbo and Prof. Yi Hong

• April-July 2024, Talks on Radar sensing with OTFS 2.0, given by Prof. Saif Khan Mohammed, Prof. Ronny Hadani, Prof. A. Chockalingam, and Prof. Robert Calderbank

• May 2024, Orthogonal delay-Doppler multiplexing (ODDM), given by Prof. Jinhong Yuan and Prof. Hai Lin

• June 2024, Practical pulse shaping for DD communications based on the Zak transform, given by Dr. Shuangyang Li

• July 2024, Recent results on delay-Doppler multiplexing, given by Prof. Arman Farhang

• August 2024, A new pilot-free ISAC waveform, given by Dr. Peter Jung and Dr. Philipp Walk

• August 2024, ODDM waveform, given by Prof. Jinghong Yuan

• September 2024, IFDM, given by Prof. Lei Liu.

• October 2024, AFDM for Wireless Communications and ISAC, given by Dr. Ali Bemani.

More details of these webinars are below.

• October 2024

Invited talk on OTFS 

Invited Speaker: Dr. Ali Bemani

Date: October 25th

Time: Central European summer time 10:00 am /Sydney 18:00 pm/Beijing 16:00 pm

Title: Affine Frequency Division Multiplexing (AFDM) for Wireless Communications and ISAC   

Abstract: The talk starts by introducing the principles of AFDM, followed by a demonstration of how proper tuning of the AFDM parameters results in a DAFT domain impulse response providing a full delay-Doppler representation of the channel. In that context, the link between the DAFT and Zak domains is also provided. Next, the talk focuses on channel estimation under the assumption of sparsity in both the delay and Doppler domains. By linking this double sparsity model to a hierarchical sparsity framework, AFDM is shown to provide a measurement matrix with good properties for compressed sensing algorithms with recovery guarantees. Finally, the talk tackles one key application of AFDM, which is ISAC. Sensing with the pilot part of AFDM—comprising just one DAFT domain symbol and its guard interval—achieves almost the same sensing performance as using an entire AFDM frame. Additionally, due to AFDM's chirp nature, sensing with a single pilot allows for effective self-interference cancellation, avoiding the need for complex full-duplex methods. Another feature of AFDM is its compatibility with sub-Nyquist radar. The talk concludes by showing how AFDM enables sensing devices to receive large-bandwidth pilot signals and conduct full-resolution delay/range estimation based on down-sampled versions of these pilots.

Zoom link:  https://tu-berlin.zoom.us/j/61603256974?pwd=QbsBJU93swhaVjaUXySL7XPnLL6TaN.1

Meeting ID：616 0325 6974

Passcode：008967

• September 2024

Invited talk on OTFS 

Invited Speaker: Prof. Lei Liu

Date: September 30th

Time: Central European summer time 10:00 am /Sydney 18:00 pm/Beijing 16:00 pm

Title: Interleave Frequency Division Multiplexing (IFDM)  

Abstract: This talk introduces interleave frequency division multiplexing (IFDM) for multicarrier modulation in both static and time-varying multipath channels. Unlike existing modulations, such as OFDM, OTFS and AFDM, which rely on channel sparsification to enable low-complexity detection algorithms, the proposed IFDM establishes an equivalent fully dense and random channel matrix, ensuring that the signals undergo sufficient statistical channel fading. Meanwhile, a low-complexity and replica maximum a posteriori (MAP)-optimal cross-domain memory approximate message passing (CD-MAMP) detector is proposed for IFDM by exploiting the sparsity of the time-domain channel and the randomness in interleave-frequency-domain channel, outperforming OFDM, OTFS, and AFDM with state-of-the-art high-complexity orthogonal approximate message passing (OAMP) detectors.

Zoom link:  https://tu-berlin.zoom.us/j/66633760223?pwd=VOrlasIznhgl6aKP878xM9JC1jB7Mm.1

Meeting ID：666 3376 0223

Passcode：874287

• August 2024

Invited talk on OTFS 

Invited Speaker: Prof. Jinhong Yuan 

Date: August 26th

Time: Central European summer time 10:00 am /Sydney 18:00 pm/Beijing 16:00 pm

Title: Characteristics and performance of ODDM waveform over general doubly-selective channels   

Abstract: Delay-Doppler (DD) multicarrier modulation (DDMC) has recently emerged as a promising solution for ensuring reliable communications in various future applications, including high-mobility scenarios, underwater and high-frequency communications, and integrated sensing and communications. As a DDMC, the orthogonal delay-Doppler multiplexing (ODDM) achieves orthogonality with respect to the fine resolutions in the DD plane, thus, effectively coupling the modulated signal with the DD domain representation of doubly selective channels. This coupling establishes a compact input-output (I/O) relation, enabling precise channel estimation and simplified equalisation, while demonstrating superior out-of-band emission.

In this talk, we will delve into the fundamental characteristics of ODDM waveform and its interaction with general doubly-selective channels. We will begin by revisiting multicarrier modulation designs with time and frequency constraints. We then introduce the fundamentals of ODDM, including its transmit pulse known as the DD orthogonal pulse (DDOP). We will also discuss the analytical results of the spectral response of ODDM waveform and examine the time-frequency localization characteristics of DDOP. Following this, we will explore the interaction of ODDM waveform with general doubly-selective channels, present the effective I/O relation of ODDM, and discuss its implications. Finally, we examine the impact of imperfect channel information on the ODDM detection performance and provide insights.

Zoom link:  https://tu-berlin.zoom.us/j/63519789334?pwd=ZzoX9SN8XKrW2Qyhb8DPD6CbJVbu4o.1 

Meeting ID: 635 1978 9334 

Passcode: 404450 

• August 2024

Invited talk on OTFS 

Invited Speaker: Dr. Peter Jung and Dr. Philipp Walk

Date: August 16th

Time: Central European summer time 11:00 am /Sydney 19:00 pm/Beijing 17:00 pm

Title: A new Physical Waveform for Pilot-free Integrated Communication and Sensing 

Abstract: We will present in this talk a new waveform for integrated communication and sensing, which uses a pilot-free modulation and multiplexing scheme called MOCZ - Modulation On Conjugate-reciprocal Zeros. In the Binary Version of MOCZ, the bits of a block-message are mapped onto zeros chosen from disjoint conjugate-reciprocal zero-pairs. For a block-message of length K, the so chosen K zeros/roots will define a complex-valued polynomial of order K. By using the Vitae Formula, the polynomial coefficients can be iteratively calculated, defining the IQ samples of the time-discrete baseband waveform. By modulating the baseband signal to an RRC pulse with given bandwidth and upconverting to the desired carrier-frequency, a real-valued passband signal can be transmitted. At the receiver, the received time-discrete baseband signal will create a polynomial which is given as the product of the transmitted MOCZ polynomial and the multipath channel polynomial, assuming the channel is during this time-period static, i.e. linear-time-invariant. Since polynomial multiplication is joining the zeros, the transmitted zeros are not alternated by the multipath-channel and hence the information is preserved in the noise-free case. By directly testing the zero-constellation points, known to the receiver, the bits of the block-message can be directly demultiplexed and demodulated, yielding a low-complexity receiver. The Direct-Zero-Testing can be also implemented by applying two scaled FFTs on the received IQ signal. The approach remains robust if additive noise is added. 

Due to the radar-properties of the BMOCZ waveform, a time-synchronization can be blindly obtained at the receiver by a matched filter, given by a so called universal BMOCZ signature. Using over-zero-testings and a certain circular error correcting code, arbitrary carrier-frequency-offsets can be estimated and corrected. After the message is decoded, the multipath channel can be estimated by a simple Frequency Domain Equalization, enabling the sensing at the receiver. 

Zoom link:  https://tu-berlin.zoom.us/j/62726357334?pwd=swvaAuEZZzT2c6gUSWp7CsdEE11iu7.1

Meeting ID: 627 2635 7334

Passcode: 107776

• June 2024

Invited talk on OTFS 

Invited Speaker: Prof. Arman Farhang

Date: July 17th

Time: Central European summer time 12:00 am/Sydney 20:00 pm/Beijing 18:00 pm

Title: Pathway Towards Practical Development of Delay-Doppler Multiplexing

Abstract: Multipath fading and Doppler effects are two critical and inherent channel effects that need to be solved in the high-mobility or high frequency wireless communication systems that are required for the emerging application areas in the 6th generation wireless networks (6G). While orthogonal frequency division multiplexing (OFDM) has been the technology of choice in the last two generations of wireless systems, it cannot cope with the high level of the Doppler spread that is present in the wireless channel. Sparked by orthogonal time-frequency space (OTFS) modulation, delay-Doppler (DD) domain multiplexing techniques have recently attracted a great deal of attention among researchers as a solution for handling the Doppler spread of the channel. However, from the manufacturers’ and network operators’ perspective, replacement of the modulation technique, as a fundamental part of the network, with a completely new technology is not favourable or even possible. Therefore, in this talk, I will share a potential pathway to circumvent the challenges around making delay-Doppler multiplexing a reality in future networks. Furthermore, this talk will present practical considerations of delay-Doppler multiplexing such as pulse-shaping, practical pilot design, synchronization, channel estimation and multiple access. Such practical aspects are highly important in exploiting the full potential of delay-Doppler communication in addressing the requirements of future wireless networks.

Zoom link:  https://tu-berlin.zoom.us/j/68406007652?pwd=aLbZYCheedoXZhFcQqrOo1eTzZTapf.

Meeting ID: 684 0600 7652

Passcode: 389974

• June 2024

Invited talk on OTFS 

Invited Speaker: Dr. Weijie Yuan and Dr. Shuangyang Li

Date: June 25th

Time: Central European summer time 13:00 pm/Sydney 21:00 pm/Beijing 19:00 pm

Title: Data Detection for OTFS Modulation: A Rethink and Outlook

Abstract: In this talk, we present a summary of the recent advancements for OTFS detection. We will start from the error performance analysis for OTFS with and without channel coding, where we derive the diversity gain and coding gain based on the framework of pairwise error probability. Build upon our analysis, we further study reduced-complexity detection methods for OTFS. We introduce the general concept of message passing algorithm and highlights its application for OTFS. Particularly, we will show how the delay-Doppler domain sparse channel can facilitate the algorithm in terms of error performance and convergence. Furthermore, we will present the framework of cross-domain detection, which applies both estimation and detection in different domains while iteratively updates the error performance via cross domain message passing. The state evolution for such detection will be derived and some complexity reduction methods will also be studied.

Zoom link:  https://tu-berlin.zoom.us/j/61312470305?pwd=ByPJQ7PvXFyJF33gbIUR4y2C87kjb3.1

Meeting ID: 613 1247 0305

Passcode: 404235

• May 2024

Invited talk on OTFS 

Invited Speaker: Prof. Robert Calderbank

Date: May 24th

Time: US eastern time 09:15/Central European summer time 15:15/India Standard time 18:45/Beijing time 21:15

Title: Zak-OTFS for the Integration of Sensing and Communication

Abstract: We will start by reviewing the parametric family of Zak-OTFS pulsone waveforms that can be matched to the delay and Doppler spreads of different propagation environments. In particular, we will describe how the (point) pulsone signal in the time domain realizes a quasi-periodic localized function on the delay-Doppler (DD) domain. The characteristic structure of a pulsone is a train of pulses modulated by a tone, a signal with unattractive peak-to-average power ratio (PAPR). We will review system performance in the crystalline regime where the delay period of the pulsone is greater than the delay spread of the channel, and the Doppler period of the pulsone is greater than the Doppler spread of the channel. When channel sensing and data transmission take place in separate subframes, the point pulsone used to sense the channel does not interfere with the point pulsones used to transmit data. We will describe how the I/O relation of the sampled communication system can be read off from the response to the point pulsone used for channel sensing. We will introduce the notion of filtering in the discrete delay-Doppler domain. We will describe how to construct spread waveforms with desirable characteristics by applying a chirp filter in the discrete DD domain to a point pulsone. One desirable characteristic is low PAPR, about 6dB for the exemplar spread pulsone, compared with about 15dB for the point pulsone. A second desirable characteristic is the ability to read off the I/O relation of the sampled communication system provided a second crystallization condition is satisfied. We will emonstrate how to integrate sensing and communication within a single Zak-OTFS subframe through the combination of a spread pulsone used for channel sensing and point pulsones for data transmission. The filter in the discrete DD domain enables coexistence by minimizing interference between sensing and data transmission. We will demonstrate that sharing DD domain resources in this way increases effective throughput compared with traditional approaches that use guard bands to divide DD domain resources between sensing and communication. This is joint work with Muhammad Ubadah, Saif Khan Mohammed, Ronny Hadani, Shachar Kons, and Ananthanarayanan Chockalingam – see  https://arxiv.org/abs/2404.04182 for more details.

Zoom link:  https://tu-berlin.zoom.us/j/69595375123?pwd=R01QaUJJUlNOVEpYL3B3Y3hCTEo3Zz09

Meeting ID: 695 9537 5123

Passcode: 201758

• April 2024

Invited talk on OTFS 

Invited Speaker: Prof. Ronny Hadani

Date: April 19th

Time: Texas (Central daylight time) 08:20/Central European summer time 15:20/India Standard time 18:50/Beijing time 21:20

Title: Zak OTFS: a framework for communication and sensing in the delay-Doppler domain

Abstract: In this talk I will discuss recent development in the theory and applications of the OTFS waveform. My goal is to derive the OTFS waveform from the Zak theoretic perspective and discuss its utility for communication and sensing/Radar. I will explain that OTFS is, in fact, a one parametric family of waveforms, called pulsones, which generalizes both traditional single carrier and multi-carrier waveforms. I will emphasize a specific regime of the parameter called the crystalline regime, where the coupling with the doubly spread channel exhibits a particularly regular structure, which, in turns, renders it ideal both for radar sensing and for communication. Along the way, I will point out a new theoretical insight about the phenomena of selectivity (fading), explaining its root cause to be aliasing in the delay-Doppler domain. I will conclude with a description of a new type of generalized pulsones, referred to as spread/rotated pulsones, that facilitates a unified architecture for joint sensing and communication. 

Zoom link:  https://tu-berlin.zoom.us/j/68172929523?pwd=K2d6NnM1SXByR2ttckJGeDFPVkRIZz09

Meeting ID: 681 7292 9523

Passcode: 309024

• March 2024

Invited talk on OTFS 

Invited Speaker: Prof. Emanuele Viterbo, Prof. Yi Hong

Date: March 28th

Time: Melbourne time 20:00/Beijing time 17:00/Central Europe time 10:00/London time 09:00.

Title: Reflections on OTFS and delay-Doppler Communications

Abstract: Orthogonal time frequency space (OTFS) modulation was presented by Hadani et al. at WCNC’17, San Francisco. Since then, its significant advantages over OFDM in doubly dispersive channels for high-mobility wireless communications have been well documented in the literature. The key idea of OTFS is to model mobile wireless channels in the delay Doppler domain, where the sparse geometry of the reflectors in the channel is captured. This talk will introduce the general notion of delay-Doppler communications, starting from the fundamentals of high-mobility wireless channels, followed by the transceiver architecture for detection and channel estimation, and finally discuss some implementation complexity trade-offs and future applications.

Zoom link:  https://tu-berlin.zoom.us/j/67414003030?pwd=dHM2RHA5dSs2NGRtek9mbXdLMlRxZz09 

Meeting ID: 674 1400 3030 

Passcode: 403065

• May 2023

Invited talk on OTFS 

Invited Speaker: Prof. Saif Khan Muhammad

Date: May 16th

Time: New York 9:30 am/New Delhi 7:00 pm/Beijing 9:30 pm

Title: Driving the Next Wave of OTFS Research with OTFS 2.0 Modulation

Abstract: There is growing interest in Orthogonal Time Frequency Space (OTFS) modulation introduced by R. Hadani et. al. [1]. This is primarily due to the robustness of OTFS modulation to the high delay and Doppler shift encountered in doubly-spread channels. 4G/5G systems are based on OFDM which suffers from fading and high channel estimation overheads in doubly-spread channel scenarios. With high mobility scenarios envisaged in 6G, OTFS is poised to be a leading candidate waveform for next generation communication systems.   OTFS modulation in [1], subsequently referred to as OTFS 1.0 is based on carrier waveforms called ``pulsones". A time-domain (TD) pulsone is an impulse train modulated by a sinusoid. The effect of path delay and Doppler on a pulsone is simply shifting the pulse train in time and modulating it by a sinusoid, resulting in another pulsone. The response of two distinct channel paths to a pulsone input are two separable/distinguishable pulsones. This allows for harnessing path diversity which combats fading. For the sake of compatibility with existing 4G/5G modems, OTFS 1.0 pulsones were purposefully designed to be generated using an OFDM modulator. This constraint however makes its interaction with the channel difficult to predict, i.e., the response to an OTFS 1.0 pulsone is difficult to estimate/predict from the response to another OTFS 1.0 pulsone. Due to this reason, it is difficult to acquire the OTFS 1.0 input-output (I/O) relation efficiently (i.e. with low-overhead).   With the goal to achieve a simple and predictable I/O relation in doubly-spread channels, we consider communication without any constraint on the transceiver architecture. Since doubly-spread channels induce both a delay and a Doppler shift, it is intuitive to consider pulses in the two dimensional delay-Doppler (DD) domain as information carriers. However, in order to have a TD realization, a DD domain signal needs to be quasi-periodic along the delay and Doppler domains with periods that are inversely related to each other. Quasi-periodicity is enforced by Zak transform which converts a TD signal to the DD domain. The TD realization of quasi-periodic DD domain pulses gives rise to another type of pulsones which we refer to as ``OTFS 2.0 pulsone". Interestingly, the interaction of a OTFS 2.0 pulsone with a doubly-spread channel is predictable and non-fading when the channel delay and Doppler spreads are less than the respective delay and Doppler domain periods of the corresponding quasi-periodic DD pulse. When the delay and Doppler periods are chosen in this manner, they are said to satisfy the crystallization condition. The predictable and non-fading channel interaction in the crystalline regime is due to the fact that the DD domain channel responses to a DD pulse and to its quasi-periodic aliases do not superimpose/overlap, i.e., there is no DD domain aliasing. When the crystallisation condition is not satisfied, DD domain aliasing results in a non-predictable and fading channel interaction.   In OTFS 2.0 modulation [2][3], information symbols are carried by time and bandwidth limited OTFS 2.0 pulsones. The discrete DD domain channel output is given by a simple twisted convolution of the input discrete DD domain quasi-periodic information signal and the effective discrete DD domain channel filter. This simple I/O relation is what makes the channel interaction predictable and non-fading in the crystalline regime. OTFS 2.0 modulation is a natural fit for doubly-spread channels just as TD modulation (using TD pulses) is fit for delay-only channels and FD modulation (using FD pulses) is fit for Doppler-only channels. This is because, in all these three scenarios (OTFS 2.0 in doubly-spread, TDM in delay-only and FDM in Doppler-only), the operation describing the I/O relation is the same as the operation which describes the cascade of channels. This operation is TD convolution for TDM, FD convolution for FDM and DD domain twisted convolution for OTFS 2.0 modulation. OTFS 1.0 modulation is not a natural fit as its DD domain I/O relation is not described by simple twisted convolution.   Being a natural fit for doubly-spread channels, OTFS 2.0 modulation is expected to drive the next wave of research on OTFS, hopefully leading to its deployment in 6G and beyond.  [1] R. Hadani, S. Rakib, M. Tsatsanis, A. Monk, A. J. Goldsmith, A. F. Molisch and R. Calderbank, ``Orthogonal Time Frequency Space Modulation,'' Proc. IEEE WCNC'2017,  Mar. 2017.  

[2] S. K. Mohammed, R. Hadani, A. Chockalingam and R. Calderbank, ``OTFS – A Mathematical Foundation for Communication and Radar Sensing in the Delay-Doppler Domain," IEEE BITS the Information Theory Magazine, 2022. arXiv:2302.08696 [eess.SP]  

[3] S. K. Mohammed, R. Hadani, A. Chockalingam and R. Calderbank, ``OTFS - Predictability in the Delay-Doppler Domain and its Value to Communication and Radar Sensing," submitted to IEEE, Feb. 2023. arXiv:2302.08705 [eess.SP]

Zoom link:  https://tu-berlin.zoom.us/j/65017057553?pwd=MWsyZVgra05BQmVqckVNRHQ4R1lNZz09

• December 2022

Invited talk on OTFS 

Invited Speaker: Prof. Chandra Murthy

Date: Dec. 15th

Time: New York 8:30 am/London 1:30 pm/New Delhi 7:00 pm/Beijing 9:30 pm

Title: New Modulation Waveforms for Delay and Time-scale Spread Wideband Channels

Abstract: Underwater acoustic (UWA) and ultra-wideband (UWB) communication systems typically confront wideband time-varying channels. Due to this,  the Doppler effect results in a frequency-dependent non-uniform shift of signal frequencies across the band. In this talk, we present a new waveform, namely, the Variable Bandwidth Multicarrier (VBMC) waveform, which comprises multiple subcarriers that are constructed from chirp pulses used in radars and sonars. We design the subcarrier chirps to occupy progressively increasing, frequency-dependent bandwidth from the lower to upper frequency edge of the communication band. Due to this, the subcarriers of the VBMC waveform maintain their near mutual orthogonality even after passing through a delay and scale spread channel. This results in low inter-carrier interference and facilitates a low complexity subcarrier-by-subcarrier decoding at the receiver. We also discuss a modulation dictionary-based framework, which allows one to cast different modulation waveforms and channels models in a common linear input-output structure, and enables their fair comparison.   

In the second part of the talk, we present Orthogonal Delay Scale Space (ODSS) modulation as a further enhancement over VBMC, for wideband time-varying channels.  In the process, we introduce the notion of ω-convolution, through which the signal is transformed between the Fourier-Mellin domain and the delay-scale domain. The resulting near-orthogonality of the subcarriers improves the bit error rate performance, and, since the effective channel matrix is rendered near-diagonal, ODSS retains the advantage of Cyclic Prefix Orthogonal Freqeuncy Division Multiplexing (CP-OFDM) in terms of its low-complexity receiver structure in purely delay-spread channels.  Numerical simulation of the bit error rate over wideband delay-scale channels shows that the new waveforms outperform the CP-OFDM and the recently developed Orthogonal Time Frequency Space (OTFS) waveforms, while matching their performance in more benign channels.  

Zoom link:  https://unsw.zoom.us/j/81447694308

• August 2022

Invited talk on OTFS 

Invited Speaker: Prof. Andreas Molisch

Date: Aug. 1st, 2022 (US)/Aug. 2nd, 2022 (Asia-Pacific)

Time: 6:00 pm Los Angeles (Aug. 1st)/9: 00 pm New York (Aug. 1st)/9:00 am Beijing (Aug. 2nd)

Title: Time-variant double-directional channels and their relation to OTFS

Abstract: OTFS has drawn great interest in the past five years, as a modulation method that is robust to temporal channel variations, as well as allows efficient implement of various MIMO schemes. One interpretation of OTFS is as modulation in the delay-Doppler-angle domain. This naturally raises the question about available measurement results and models for propagation channels in this multi-dimensional space. Consequently, this talk will start out with a review of the fundamentals of OTFS,  in particular its interpretation as modulating the delay-Doppler domain, followed by a discussion of channel sounding techniques and measurement results for delay-Doppler-angle channels. Discussions about the capability of OTFS to effectively estimate those channels will wrap up this talk. 

Zoom link:  https://unsw.zoom.us/j/84464575544?pwd=OXNIdlFVYnRkYmFvS2k3UWhuL1I2dz09

Password: 011518

• July 2022

Special 2+2 Event on OTFS-enabled Satellite Communications (endorsed by IEEE ComSoc SSC-TC, IEEE YP Montreal, and IEEE ComSoc WTC SAGI-SIG) 

1st Week

Invited Speakers: Dr. Yongpeng Wu and Dr. Pu Yuan

Date: July 21, 2022

Time: 9:00 am Montreal/2:00 pm London/9:00 pm Beijing

Agenda (time in Montreal)

9:00 am - 10:05 am   Welcome Speech by Prof. Halim Yanikomeroglu

9:05 am - 10:05 am   "Random Access with Massive MIMO-OTFS in LEO Satellite Communications" by Yongpeng Wu

10:05 am - 11:05 am   "Orthogonal Time Frequency Space from the System Design Perspective" by Pu Yuan

Registration link: https://events.vtools.ieee.org/m/319519

2nd Week

Invited Speakers: Prof. Yi Hong, Prof. Zan Li, and Dr. Jia Shi, 

Date: July 26, 2022

Time: 8:30 am Montreal/1:30 pm London/8:30 pm Beijing

Agenda (time in Montreal)

8:30 am - 8:35 am   Welcome Speech by Prof. Gunes Karabulut Kurt

8:35 am - 9:35 am  "OTFS and delay-Doppler Communications" by Yi Hong

9:35 am - 10:35 am   "OTFS enabled Reliable LEO Satellite Communications: A Killer for Severe Doppler Effect" by Zan Li and Jia Shi

Registration link:  https://events.vtools.ieee.org/m/319533 

• May 2022

Invited talk on OTFS 

Invited Speakers: Prof. Gerhard Fettweis

Date: May. 20th, 2022

Time: 9:00 am New York/2:00 pm London/3:00 pm Berlin/9:00 pm Beijing

Title: Understanding Modulation to Mitigate Doubly Dispersive Channels – OTFS and Alternatives

Zoom link: https://unsw.zoom.us/j/83303854811

• Feb 2022

Invited talk on OTFS (co-organized with IEEE ComSoc SPCC-TC)

Invited Speakers: Prof. Ananthanarayanan Chockalingam

Date: Feb. 23th, 2022

Time: 10:30 am London/4:00 pm Mumbai/6:30 pm Beijing/9:30 pm Sydney

Title: OTFS Transceivers Design using Deep Neural Networks 

Zoom link: https://unsw.zoom.us/j/81606910468?pwd=dm5uOHhub084VDFwaHhCSW4zb2lOQT09

Password: 186040 

• Nov. 13th, 2021 AEDT

3.5-hour "2+1“ event on OTFS (co-organized with IEEE ComSoc Communications Theory Technical Committee)

Invited Speakers: Prof. Ronny Hadani and Prof. Emanuele Viterbo

Date: November 13th, 2021 Australian Eastern Time/November 12th, 2021 US Pacific Time

Time: 7:00 am Berlin Time (GMT +1)/11:30 am Mumbai Time (GMT +5.5)/2:00 pm Beijing Time (GMT +8)/5:00 pm Melbourne Time (GMT +11)/Nov. 12 10:00 pm Los Angeles Time (GMT -8)

Zoom link for pre-registration and seminar: https://unsw.zoom.us/j/87975847840 

Title: OTFS for Next-generation Wireless Communications

Detailed Agenda (time in Melbourne)

17:00-17:05   Welcome Speech

17:05-18:05   Invited Talk I on OTFS by Ronny Hadani

18:05-19:05   Invited Talk II on OTFS by Emanuele Viterbo

19:05-20:30   Panel Discussions and Questions

To have a smooth panel discussion, we have provided a link for collecting related questions.

Question Collection Link before the seminar. For anyone who is not convenient to fill the above form, they can send their questions directly to OTFS-SIG secretary Shuangyang at shuangyang.li@unsw.edu.au.