Performance of Error Correcting Codes for Next Generation Communication

Abstract

The error correcting codes have gained popularity due to its several well known prop-erties, like the distance property and the block length. The convolution code and theturbo code are used as error correcting codes which are able to come very close tothe theoretical limit, the Shannon's limit. The convolution code and the turbo codesare used in the 3G (third Generation) mobile technologies and the standards denedin the IEEE 802.16 (WiMax).The thesis describes the evaluation and the performance of the convolution codebased on the code rate, BER, Eb/No, and dierent modulation techniques. Sec-ondly the study, analysis and implementation of the turbo codes with encoding anddecoding methods have been carried out using AWGN channel with BPSK modu-lation technique. The turbo code encoder is built using a parallel concatenation oftwo recursive systematic convolution (RSC) codes with interleaver and the associateddecoder, using Soft Output Viterbi Algorithm (SOVA).