Title :
Performance measures for satellite-to-land-mobile communication systems using spread spectrum
Author :
Bergstrom, Ami ; Ziemer, Rodger
Author_Institution :
Ind. Res. Ltd., Lower Hunt, New Zealand
Abstract :
A direct-sequence spread-spectrum satellite-to-land-mobile communications system is analyzed with respect to fading/multipath effects in Rayleigh or Rayleigh faded multiple-access environment with an unfaded, Rayleigh, and Rician faded desired user. Numerical results employing Gold codes of lengths 31 and 127 for all three fading cases of the desired user are presented in terms of tight lower and upper bounds of the bit error probability as well as user capacity. The latter performance measure is represented by the minimum required SNR for a specified acceptable bit error probability versus the number off users in the system. Conclusions on the fading/multipath effect on the number of simultaneous users of the satellite-to-land-mobile communications system are drawn from the numerical results
Keywords :
Rayleigh channels; Rician channels; fading; land mobile radio; mobile satellite communication; multi-access systems; phase shift keying; pseudonoise codes; spread spectrum communication; BPSK; Gold codes; Rayleigh faded multiple-access; Rician faded desired user; SNR; bit error probability; direct-sequence spread-spectrum; fading; lower bounds; multipath effects; performance measures; satellite-to-land-mobile communication system; upper bounds; user capacity; Additive white noise; Binary phase shift keying; Capacity planning; Error probability; Fading; Rayleigh channels; Rician channels; Spread spectrum communication; Springs; Upper bound;
Conference_Titel :
Vehicular Technology Conference, 1994 IEEE 44th
Conference_Location :
Stockholm
Print_ISBN :
0-7803-1927-3
DOI :
10.1109/VETEC.1994.345368
