Title :
Hybrid DS/SFH-SSMA over mobile satellite log-normal shadowing channels
Author :
Fouad, Mohamed R.
Abstract :
This paper investigates the bit error rate (BER) performance of the hybrid direct-sequence/slow frequency-hopping spread-spectrum multiple-access (DS/SFH-SSMA) system and proved that both diversity and coding are required for satisfactory BER. The system is operated over multipath log normal (light, average and heavy) shadowing channel which is the case of mobile satellite channel. We consider binary-phase shift keying modulation (BPSK) with coherent demodulation. Predetection multipath diversity (maximal ratio combining) are employed for improving the BER performance with different coding techniques
Keywords :
diversity reception; error statistics; frequency hop communication; log normal distribution; mobile satellite communication; multi-access systems; multipath channels; phase shift keying; spread spectrum communication; BER performance; BPSK; DS/SFH-SSMA; binary-phase shift keying modulation; bit error rate; coding techniques; coherent demodulation; direct-sequence/slow frequency-hopping spread-spectrum multiple-access; hybrid system; maximal ratio combining; mobile satellite channel; multipath log normal shadowing channel; predetection multipath diversity; Binary phase shift keying; Satellites; Shadow mapping;
Conference_Titel :
Radio Science Conference, 2001. NRSC 2001. Proceedings of the Eighteenth National
Conference_Location :
Mansoura
Print_ISBN :
977-5031-68-0
DOI :
10.1109/NRSC.2001.929402
