Determining the Effectiveness of LDPC Codes for 5G Information Networks

This paper is devoted to research of the urgent problem of developing models of efficient coding in telecommunication networks on the basis of low-density parity-check codes. The solution of the problem is carried out taking into account the code rate and the number of iterations decoding for envisaging the defined noise immunity indices. The noise immunity of signal-code constructions based on low-density codes has been increased by combining them with multi position digital modulation. This solution eventually allowed to develop a strategy for decoder designing of such codes and to optimize the code structure for a specific information network. The paper presents experimental studies of low-density codes for different types of channels. The maximum noise immunity is determined. The possibility of combining low-density codes with differential modulation is estimated. The research results of productivity of information transmission channels with defined codes at different values of redundancy, transport block size, code rate are given.