INCREASING THE WIRELESS SYSTEMS INFORMATION EFFICIENCY USING LDPC CODING

Background. LDPC codes research is performed in the paper. The influence of LDPC codes on channel information efficiency is studied in scope of MCS and the benefit of using LDPC codes is specified in digits as a result of research. Objective . The purpose of the paper is LDPC correcting abilities research in modern telecom systems and their comparison to other known error-correcting codes, and research of their influence on information efficiency of telecommunication system. Methods . Simulation modeling algorithm is implemented in Matlab using Java language, what helps generating corrective matrices and allows us to find out the corrective abilities of LDPC codes with different set of parameters. Many experiments make a statistic that shows a maximum and the best corrective abilities of LDPC codes, what is the aim of applying the simulation modeling approach. Results. The programmable simulation models to generate LDPC codes and errors number determining corrected LDPC codes with different parameters are developed. It’s the first time the method is proposed of determining the ultra-long block LDPC codes to ensure the reliability characteristics specified in the channel with known parameters, characterized in that the analysis parameters LDPC code is implemented using the original statistical model and to evaluate corrective ability to code at a significant increase in the length of the block LDPC code. Also, the LDPC codes influence on channel information efficiency is researched, and shown 9...52% improvement. Conclusions. The important scientific problem is solved in the paper, – construction and use of advanced wireless transmission systems with increasing information efficiency using LDPC coding. Stages of channel resources redistribution include LDPC, OFDM, modulation, described and presented in the information efficiency coordinates and transmission system performance.