Departmental Bulletin Paper Unequal rate transmission for sum rate maximization over two-user Gaussian multiple access channel

He, Meilin  ,  Song, Guanghui  ,  Cheng, Jun  ,  カ, ビリン  ,  ソウ, コウキ  ,  テイ, シュン  ,  何, 美霖  ,  宋, 光輝  ,  程, 俊

57 ( 2 )  , pp.137 - 145 , 2016-07-31 , 同志社大学ハリス理化学研究所 , Transcription:ドウシシャ ダイガク ハリス リカガク ケンキュウジョ , Alternative:Harris Science Research Institute of Doshisha University
A two-user unequal rate repeat accumulate (RA) code is considered for a Gaussian multiple access channel (GMAC) with binary inputs, equal-power, and symbol synchronization. In this scheme, a regular RA code whose rate can be changed freely is employed for each user. At the receiver, two-user message-passing decoding is performed on a single factor graph. Over the GMAC, a fixed point analysis is developed to obtain all achievable pairs-of-rates, in which the optimal pair-of-rates gives the maximum sum rate in the sense that the error rate of detected information bits approaches zero.

Number of accesses :  

Other information