Joint Source-Channel Decoding Algorithm Based on Redundancy Allocation and Variable Estimation Criterion for GSM EFR
基于参数冗余量分配方案和可变参数估计准则的 GSM EFR信源信道联合解码算法

Based on GSM EFR (Enhanced Full Rate) parameter redundancy, this paper proposes a new structure of joint source-channel decoding based on iterative channel decoder and parameter estimation. Based on the analysis of GSM EFR parameter redundancy, the paper presents the reasonable redundancy allocation strategy to arrange the two kinds of redundancy between the source decoder and channel decoder. Also, according to the characteristic of different speech coefficient, different estimation criterions are presented. Simulation results show that the algorithm of this paper improves the receiver performance significantly.