Title :
Multicarrier direct-sequence spread-spectrum system performance in Doppler-spread Rician fading
Author :
Ziemer, Rodger E. ; Welch, Thaddeus B B, III
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Colorado Springs, CO, USA
Abstract :
A method for computing the bit error probability (BEP) of multicarrier modulated (MCM) direct-sequence spread-spectrum (DSSS) using differentially coherent phase-shift keying (DPSK) with equal gain combining in delay and Doppler-spread Rician fading is given. The accounting for the Doppler spread is based on Gauss-Chebyshev quadrature integration of the moment generating function of the decision statistic at the combiner output. The results show that as the specular-to-diffuse power ratio, K, increases and/or the maximum Doppler spread decreases the minimum BEP for optimum diversity, L (MCM carriers), decreases
Keywords :
Rician channels; decision theory; differential phase shift keying; error statistics; integration; mobile radio; personal communication networks; spread spectrum communication; DPSK; DSSS; Doppler-spread Rician fading; Gauss-Chebyshev quadrature integration; PCS; bit error probability; decision statistic; delay; differentially coherent phase-shift keying; equal gain combining; moment generating function; multicarrier direct-sequence spread-spectrum; multicarrier modulation; optimum diversity; specular-to-diffuse power ratio; system performance; Delay; Differential quadrature phase shift keying; Diversity reception; Error probability; Gaussian processes; Phase modulation; Phase shift keying; Rician channels; Spread spectrum communication; System performance;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800327
