Title :
Hybrid DS/SFH-SSMA with predetection diversity and coding over indoor radio multipath Rician-fading channels
Author :
Wang, Jiangzhou ; Moeneclaey, Marc
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, CA, USA
fDate :
10/1/1992 12:00:00 AM
Abstract :
The authors investigate the bit-error-rate (BER) performance of hybrid direct-sequence/slow-frequency-hopped spread-spectrum multiple-access (DS/SFH-SSMA) systems operating over a multipath Rician-fading channel (which models indoor radio propagation in factories). They consider both phase-shift-keying (PSK) modulation with coherent demodulation and differential phase-shift-keying (DPSK) modulation with noncoherent demodulation. Predetection multipath diversity (maximal ratio combining for coherent reception and equal gain combining for noncoherent reception) and simple interleaved channel coding are employed for improving the BER performance. The BER of both coherent and noncoherent hybrid systems is obtained using a Gaussian interference approximation
Keywords :
demodulation; diversity reception; encoding; error statistics; fading; multi-access systems; phase shift keying; radiowave propagation; spread spectrum communication; telecommunication channels; BER performance; DPSK; DS/SFH-SSMA; Gaussian interference approximation; PSK; bit-error-rate; coherent demodulation; differential phase-shift-keying; hybrid direct-sequence/slow-frequency-hopped spread-spectrum multiple-access; indoor radio propagation; interleaved channel coding; multipath Rician-fading channels; noncoherent demodulation; phase-shift-keying; predetection diversity; Bit error rate; Demodulation; Differential quadrature phase shift keying; Diversity reception; Indoor radio communication; Performance gain; Phase modulation; Phase shift keying; Production facilities; Spread spectrum communication;
Journal_Title :
Communications, IEEE Transactions on
