Design of Protograph LDPC-Coded MIMO-VLC Systems with Generalized Spatial Modulation  

作　　者：Dai Lin Fang Yi Guan Yongliang Mohsen Guizani 

机构地区：[1]School of Information Engineering,Guangdong University of Technology,Guangzhou 51006,China [2]The State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710126,China [3]School of Electrical and Electronic Engineering,Nanyang Technological University,Singapore [4]Department of Machine Learning,Mohamed Bin Zayed University of Artificial Intelligence(MBZUAI),Abu Dhabi,United Arab Emirates

出　　处：《China Communications》2024年第3期118-136,共19页中国通信（英文版）

基　　金：supported in part by the NSF of China under Grant 62322106,62071131;the Guangdong Basic and Applied Basic Research Foundation under Grant 2022B1515020086;the International Collaborative Research Program of Guangdong Science and Technology Department under Grant 2022A0505050070;in part by the Open Research Fund of the State Key Laboratory of Integrated Services Networks under Grant ISN22-23;the National Research Foundation,Singapore University of Technology Design under its Future Communications Research&Development Programme“Advanced Error Control Coding for 6G URLLC and mMTC”Grant No.FCP-NTU-RG-2022-020.

摘　　要：This paper investigates the bit-interleaved coded generalized spatial modulation(BICGSM) with iterative decoding(BICGSM-ID) for multiple-input multiple-output(MIMO) visible light communications(VLC). In the BICGSM-ID scheme, the information bits conveyed by the signal-domain(SiD) symbols and the spatial-domain(SpD) light emitting diode(LED)-index patterns are coded by a protograph low-density parity-check(P-LDPC) code. Specifically, we propose a signal-domain symbol expanding and re-allocating(SSER) method for constructing a type of novel generalized spatial modulation(GSM) constellations, referred to as SSERGSM constellations, so as to boost the performance of the BICGSM-ID MIMO-VLC systems.Moreover, by applying a modified PEXIT(MPEXIT) algorithm, we further design a family of rate-compatible P-LDPC codes, referred to as enhanced accumulate-repeat-accumulate(EARA) codes,which possess both excellent decoding thresholds and linear-minimum-distance-growth property. Both analysis and simulation results illustrate that the proposed SSERGSM constellations and P-LDPC codes can remarkably improve the convergence and decoding performance of MIMO-VLC systems. Therefore, the proposed P-LDPC-coded SSERGSM-mapped BICGSMID configuration is envisioned as a promising transmission solution to satisfy the high-throughput requirement of MIMO-VLC applications.

关 键 词：bit-interleaved coded modulation generalized spatial modulation multiple-input multipleoutput protograph LDPC codes visible light communication 

分 类 号：TN929.1[电子电信—通信与信息系统]