Design and Decoding of Polar Codes for the Gaussian Multiple Access\n Channel

2019/01/22 by Evgeny Marshakov, Gleb Balitskiy, Marshakov, Evgeny +6
Computer Science · Engineering · #Advanced Wireless Communication Techniques #Advanced Wireless Communication Technologies #Error Correcting Code Techniques #FOS: Computer and information sciences #Information Theory (cs.IT)

paper · pdf · doi:10.48550/arxiv.1901.07297

openalex publication_date 2019/01/22 · openalex created_date 2022/07/30 · openalex updated_date 2026/07/28

Abstract

Massive machine-type communications (mMTC) is one of the key application\nscenarios for future 5G networks. Non-orthogonal multiple access (NOMA) is a\npromising technique for the use in mMTC scenario. In this paper, we investigate\nNOMA schemes based on polar codes. We compare two possible decoding techniques:\njoint successive cancellation algorithm and joint iterative algorithm. In order\nto optimize the codes (choose frozen bits) we propose a special and efficient\ndesign algorithm. We investigate the performance of the resulting scheme in the\nGaussian multiple access channel (GMAC) by means of simulations. The scheme is\nshown to outperform LDPC based solution by approximately 1 dB and to be close\nto the achievability bound for GMAC.\n

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