Title :
Performance of dc-free turbo codes
Author :
Mokhtar, M. Amr ; Tharwat, Marwa
Author_Institution :
Fac. of Eng., Alexandria Univ.
Abstract :
A new construction of DC-free codes based on turbo codes, which can simultaneously meet the dc constraint, and error-correcting requirement is proposed. The presented scheme divided into two parts: the RDS control encoder/decoder and turbo encoder/decoder. The RDS control encoder generates several codewords of a window code for selecting a control vector. Also, BER performance for DC-free turbo code is investigated for many cases and the performance improvement between 1 decoding iteration and 10 decoding iterations for fixed code rates and constraint lengths for different frame sizes are practiced
Keywords :
error correction codes; error statistics; iterative decoding; turbo codes; BER performance; DC-free turbo code; RDS control encoder-decoder; bit error rate; error-correcting requirement; iteration method; turbo encoder-decoder; window code; Channel capacity; Computational complexity; Concatenated codes; Constraint theory; Convolutional codes; Energy management; Maximum likelihood decoding; Maximum likelihood estimation; Turbo codes; Viterbi algorithm;
Conference_Titel :
Radio Science Conference, 2005. NRSC 2005. Proceedings of the Twenty-Second National
Conference_Location :
Cairo
Print_ISBN :
977-503183-4
DOI :
10.1109/NRSC.2005.194008
