Summary
The 2018 International Symposium on Information Theory and Its Applications　(ISITA2018)
2018
Session Number:We-AM-Poster
Session:
Number:We-AM-Poster.3
Probabilistic Shaping for BICM with Pseudorandom Sequence
Masashi Yuri, Ryo Shibata, Gou Hosoya, Hiroyuki Yashima,
pp.493-493
Publication Date:2018/10/18
Online ISSN:2188-5079
DOI:10.34385/proc.55.We-AM-Poster.3
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Summary:
The combination of bit-interleaved coded modulation (BICM) and low-density parity check code (LDPC) has been studied extensively because of the design simplicity with highperformance [1], [2]. When the average transmission power is limited to S, the probability distribution of transmitting signals to achieve additive white Gaussian noise (AWGN) channel capacity has been shown to follow a Gaussian distribution input with mean 0 and variance S. To design the transmission probability distribution like a Gaussian distribution is called probabilistic shaping. In recent years, the design and analysis of BICM with a pseudorandom sequence (BICM-P) have been proposed and those bits can be used as known information to improve the decoding performance [3]. However, probabilistic shaping for BICM-P has not been studied. In this paper, we propose a probabilistic shaping scheme for BICM-P. We apply the shaping scheme especially for 2m- amplitude phase shift keying (APSK) which has been adopted by digital video broadcasting satellite standard extensions, DVB-S2X [4]. Simulation results show that our proposed scheme can achieve nearly 0.25 dB gain over AWGN channel compared with conventional scheme.