Embedded Files
5G Physical Layer Implementation
5G Physical Layer Implementation
This project implements the physical layer of 5G wireless communication systems. To cover a wide range of frequency band and various services with improved quality of service (QoS), the 5G NR designs a unified frame structure. The frame structure of NR is similar to that of LTE, but with the addition of numerology factor µ providing multiple slots in a subframe within the same time slots. With the variation of µ, the number of resource elements becomes 4096 . In LTE Phy frame, the total FFT points are 2048 with useful subcarriers 1200, which results in total 100 resource blocks with 12 resource elements in each resource block, while NR utilise 3300 subcarriers out of 4096 FFT points which divides in 275 resource blocks with 12 resource elements in each resource block.
R. Makkar, V. Kotha, M. Sheeba Kumari, D. Rawal, V. K. Chakka and N. Kumar, "Performance of Downlink SISO NR System using MMSE-IRC Receiver," 2020 IEEE 3rd 5G World Forum (5GWF), 2020, pp. 619-624, doi: 10.1109/5GWF49715.2020.9221267.
4G LTE MIMO Implementation
4G LTE MIMO Implementation
A simple Tx-Rx using Zed board (consisting of Zed-Board SOC + RF module ADFMCOMMS3/S4-EBZ + LTE Antennas) is demonstrated. One can use three boards, connect them, download the IIO oscilloscope object and QPSK Tx-Rx code from GitHub and connect/configure them by incorporating the IIO object in the Simulink QPSK Tx-Rx model.
Once the correct IP is provided to the IIO object, data flows to and fro using ethernet at the backbone. At the same time, data will transmit and receive over a wireless medium using the LTE antennas. For more details, click on the following button.
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