Low Complexity High Throughput Low Density Parity Check Code Based on Compromised Iteration over 5G Out Door Channel

Walled Khalid Abdulwahab; Sarmad Mahmood Hadi

doi:10.46604/peti.2024.14379

Authors

Walled Khalid Abdulwahab Computer Science Department; College of Computer Science and Information Technology, University of Kirkuk, Kirkuk, Iraq https://orcid.org/0000-0002-6830-4401
Sarmad Mahmood Hadi Department of Computer Network Engineering; College of Information Engineering, Al-Nahrain University, Baghdad, Iraq

DOI:

https://doi.org/10.46604/peti.2024.14379

Keywords:

5G, low-density parity-check (LDPC), error rate, complexity, throughput

Abstract

This paper presents a framework for determining an optimized decoding iteration value for low-density parity-check (LDPC) decoders, considering factors such as error rate performance, complexity, throughput, and latency. The compromised iteration is calculated at a specific signal-to-noise ratio (SNR). At this SNR, the error rate performance of the LDPC code meets the requirement for 5G by achieving a Bit Error Rate (BER) less than 10^-4. The optimized decoding iteration value is determined for a given coding length, rate, and communication channel. The system has been evaluated using two channel models, additive white Gaussian noise and 5G channels. The results show that the proposed approach reduces the overall complexity and latency of the decoder by up to 50%, and enhances the decoder throughput by up to 99%. However, this improvement comes at the cost of a bit error rate degradation in a range between 0.1 and 0.6 dB.

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