Research on error control coding performance of digital communication system

• 1、School of electronic and information engineering,Liaoning Technical University,Huludao,Liaoning 125105

Abstract：At present, the digital communication system is widely used in our life, but the digital signal is easy to be disturbed in the transmission process, which makes the receiver code type bad, and generates a wrong decision at the receiving end, causing a higher error rate. Therefore, it is necessary to make a deeper study of the error control coding in the channel.In this paper, the error control coding technology is briefly described firstly, and the coding principles and methods of linear block code, cyclic code, BCH code and convolutional code are further introduced. The model construction, system design, simulation results demonstration, error rate analysis and comprehensive performance evaluation are carried out for the coding and decoding modules of various code types in error control. The codec waveforms of linear block code, cyclic code, BCH code and convolutional code are simulated , and their respective error correction ability is verified and the error rate curve diagram of error control coding under the Gauss channel is obtained. Finally, the performance of error control coding in digital communication system is studied and analyzed.

Keywords： Digital communication system Error control coding Simulation analysis BER performance analysis