Title :
Channel reliability in turbo-coded DS/CDMA systems under Rayleigh fading channels
Author :
Okano, Wagner ; Ciriaco, Fernando ; Abrao, Taufik
Author_Institution :
Electr. Eng. Dept., State Univ. of Londrina, Londrina
Abstract :
This work proposes a general equation for the channel reliability (Lc) of DS/CDMA turbo coding systems under fading Rayleigh channels and multiple access interference. The proposed reliability equation is suitable for low, medium as well as high signal-noise ratio (SNR) system operation conditions. The Lc equation is established as a function of the ratio of active users and the processing gain (loading system, Q) and SNR from fitting of Monte-Carlo simulation (MCS) performance results. The suggested Lc equation propitiated a lower error rate performance over all SNR operation regions when compared with the previous literature results, considering different loading and coding rate conditions.
Keywords :
Monte Carlo methods; Rayleigh channels; code division multiple access; radiofrequency interference; spread spectrum communication; telecommunication network reliability; turbo codes; Monte-Carlo simulation; Rayleigh fading channel; channel reliability; coding rate; high signal-noise ratio system; multiple access interference; turbo coding systems; turbo-coded DS-CDMA systems; Concatenated codes; Convolutional codes; Equations; Fading; Frequency estimation; Iterative decoding; Multiaccess communication; Multiple access interference; Rayleigh channels; Turbo codes; Channel reliability; DS-CDMA; fading channels; multiple access interference; multiuser channels; single-user detection; turbo coding;
Conference_Titel :
Signal Processing and Communication Systems, 2008. ICSPCS 2008. 2nd International Conference on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4244-4243-0
Electronic_ISBN :
978-1-4244-4243-0
DOI :
10.1109/ICSPCS.2008.4813654
