Publication

[Patents]

• 1. Ch Santosh Reddy, Preety Priya, Debarati Sen, Chetna Singhal, Method and system for spectrally efficient pilot and detector design in the Delay-Doppler domain for OTFS-based NR (new radio) IoT and massive machine-to-machine (M2M) communications, 

     • Indian Granted Patent No. 535492, dated 29-04-2024

     • United States Granted Patent No., US 12,231,278 B2 dated 18-02-2025

     • United States Patent, Publication No.: US 2023/0370316 A1, dated 16-11-2023

  2. Preety Priya, Ch Santosh Reddy, Debarati Sen, Signal Receiver and Receiving Method for OTFS Based mmWave Communication Systems with Non-Ideal Power Amplifier, 

     • Indian Granted Patent No. 431157, dated 01-05-2023

     • United States Patent, Publication No.: US 2024/0007332 A1, dated 04-01-2024

  3. Preety Priya, Ch Santosh Reddy, Debarati Sen, Method and System for Pilot Design and Channel Estimation in Presence of Nonlinearity in the Delay-Doppler Domain for mmWave OTFS Systems, 

     • Indian Granted Patent No. 430680, dated 01-05-2023

     • United States Granted Patent No., US 12,388,680 B2 dated 12-08-2025

     • United States Patent, Publication No.: US 2023/0379194 A1, dated 23-11-2023

• [Under Review] 

  1. Samsung Electronics Co., Ltd., Frequency Interleaver System and Method for Enhanced Multicast Channel Communication, Application no. 202541077467, dated 14-08-2025.

  2. Phinehas Chinthalagattu, Ch Santosh Reddy, Debarati Sen, Method and Architecture for Doppler Resistant Hybrid Mode Domain Beamforming in High Mobility Wireless Networks, 

     • IIT Kharagpur IPR cell abstract number 22112, published on 05-08-2025. 

  3. Ch Santosh Reddy, Debarati Sen, An Orthogonal Time Frequency Space Mode (OTFSM) Waveform Based Wireless Communication System and A Method Thereof, 

     • India patent application no. 202531050583, published on 26-05-2025.

  4. Swastik Chakroborty, Ch Santosh Reddy, Debarati Sen, A Method and System for Intelligent Receiver Design for High Doppler Communication System in presence of Non-Linear Power Amplifier,

     • Indian Patent Application No. 202531006696, published on 27-01-2025 

     • US Patent Application No. 19/209,362, dated 15-05-2025

  5. Ch Santosh Reddy, Debarati Sen, Low-Complex, Reliable Multidimensional Orthogonal Time Frequency Space (ND-OTFS) Modulation-Based Communication System, 

     • Indian Patent Application No. 202431046217, published on 20-06-2024

     • United States Patent, Publication No.: 19/022,529, dated 15-01-2025

[Journals]

• 1. Ch Santosh Reddy, Debarati Sen, ”Enhanced Capacity and Reliability with OAM and Multi-Dimensional Constellation over Time-Variant Channel for Beyond 5G Systems,” IEEE Transactions on Wireless Communications, vol. 24, no. 9, pp. 7160-7176, Sept. 2025, doi: 10.1109/TWC.2025.3558643. [Paper]

  2. Preety Priya, Ch Santosh Reddy, Debarati Sen, Channel Estimator and Nonlinear Detector for mmWave Beamformed OTFS Systems in High Mobility Scenarios, IEEE Transactions on Vehicular Technology, vol. 72, no. 9, pp. 11698-11713, Sept. 2023, doi: 10.1109/TVT.2023.3266481. [Paper]

  3. Ch Santosh Reddy, Preety Priya, Debarati Sen, Chetna Singhal, Spectral Efficient Modem Design with OTFS Modulation for Vehicular-IoT System, IEEE Internet of Things Journal, vol. 10, no. 3, pp. 2444-2458, 1 Feb 2023, DOI: 10.1109/JIOT.2022.3211531. [Paper]

  4. Ch Santosh Reddy, Aruna Tripathy, Performance Evaluation of Higher-Order Alamouti Scheme with Different Modulation Techniques, International Journal of Industrial Electronics and Electrical Engineering, Jun 1, 2017. [Paper]

[Journals]

1. Ch Santosh Reddy, Yasho Vijay Singh Yadav, and Debarati Sen. "UE Centric Beamforming by Adaptive/Active Antenna System in Time-Varying Channel." IEEE Wireless Communications Letters, DOI: 10.1109/LWC.2025.3592905, (2025). [Paper]

[Conferences ]

• 1. Phinehas Chinthalagattu, Ch Santosh Reddy, Debarati Sen, ”Beam-Domain Channel Analysis for B5G Communication Systems Using OAM Beamforming,” 2025 IEEE 101st Vehicular Technology Conference (VTC2025-Spring), Jun 18, 2025, accepted. [Paper]

  2. Ch Santosh Reddy, Debarati Sen, Chetna Singhal, Multi-Dimensional Constellation for OTFS-based Vehicular-IoT in Time-Variant Channel, 2024 IEEE 99th Vehicular Technology Conference (VTC2024-Spring). Jun 24, 2024. [Paper]

  3. Ch Santosh Reddy, Debarati Sen, Chetna Singhal, Performance Analysis of NR-based Vehicular IoT System with OTFS Modulation, 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall). Sep 27, 2021. [Paper]

  4. Ch Santosh Reddy, Aruna Tripathy, Constellation Rearrangement for Space-Time Block Code, National Conference on VLSI Design, Signal Processing, Image Processing, Communication & Embedded Systems, Jul 19, 2018. [Paper]

  5. Ch Santosh Reddy, Monoranjan Rout, Suneetra Banerjee, Hand Gesture Based Robot Control using LabVIEW, National Conference on Recent Trends in Modern Electronics and its Application, Mar 13, 2014. [Paper]