Title :
Turbo-coded OFDM system for a mobile satellite broadcasting system
Author_Institution :
Sch. of Electron. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
In this paper, performance of a turbo-coded OFDM system is analyzed and simulated in a satellite broadcasting channel. The performance is evaluated in terms of bit error probability. The satellite channel is modeled as a combination of Rayleigh fading with shadowing and Rician fading channels. From simulation results, it is demonstrated that the max-log-MAP algorithm is promising in terms of performance and complexity. It is shown that performance is substantially improved by increasing the number of iterations and interleaver length of a turbo encoder. The results in this paper can be applied to OFDM-based satellite broadcasting systems
Keywords :
OFDM modulation; Rayleigh channels; Rician channels; channel coding; direct broadcasting by satellite; error statistics; mobile satellite communication; turbo codes; OFDM/64-QAM system; Rayleigh fading channels; Rician fading channels; bit error probability; channel coding; complexity; interleaver length; iterations; max-log-MAP algorithm; mobile satellite broadcasting system; satellite broadcasting channel; shadowing; turbo-coded OFDM system; Analytical models; Decoding; Error probability; Fading; OFDM modulation; Performance analysis; Quadrature amplitude modulation; Satellite broadcasting; Shadow mapping; Turbo codes;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944141
