Multiplicative repetition based superposition transmission of nonbinary codes

2016 IEEE International Symposium on Information Theory, ISIT 2016

Barcelona

2016.08.10

This paper presents a new superposition transmission method, called multiplicative repetition based superposition transmission (MRST). It is based on multiplicative repetition and superposition of nonbinary codes. For the encoding process, we use a short nonbinary code as basic code, and superimpose the multiplicatively repeated codewords of the basic code. Two decoding algorithms, the joint decoding algorithm and sliding-window decoding algorithm are proposed. Simulation results show that MRST with joint decoding algorithm is able to achieve to good performance. Compared with block Markov superposition transmission (BMST), MRST with sliding-window decoding algorithm can achieve better performance with less memory order. An improved transmission scheme, which is referred to as punctured multiplicative repetition based superposition transmission (P-MRST), is also proposed to increase the code rate of MRST. Simulation results show that the performance of P-MRST with sliding-window decoding algorithm can be improved by increasing memory order or decoding delay.