Open AccessInfluence of BCH and LDPC Code Parameters on the BER Characteristic of Satellite DVB Channels
Author(s) -
L. T. Jordanova,
Л. Б. Ласков,
D. Dobrev
Publication year - 2014
Publication title -
engineering, technology and applied science research/engineering, technology and applied science research
Language(s) - English
Resource type - Journals
eISSN - 2241-4487
pISSN - 1792-8036
DOI - 10.48084/etasr.394
Subject(s) - bch code , low density parity check code , forward error correction , computer science , concatenated error correction code , algorithm , error detection and correction , code rate , mathematics , decoding methods , block code
This article presents the results of a study on the noise immunity of DVB channels when higher-order M-ary APSK modulation schemes and concatenated BCH-LDPC codes are used. Dependencies to determine the probability at the decoder output are given taking into consideration the BCH and LDPC code parameters and the error probability in the communication channel. The influence of the BCH packets length, the BCH code rate, the number of maximum iteration and the parameters of LDPC parity-check matrix on the code efficiency is analyzed. Research of the influence of the concatenated LDPC-BCH code parameters on the radio channel noise immunity is conducted and dependencies to determine the required CNR at the input of the satellite receiver are given.