Title :
Downlink performance of multi-beam multi-satellite CDMA-based LEO satellite system with power control
Author :
Waheed, Umrani A. ; Dubey Vimal, K.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
The downlink of a LEO satellite communication system employing power controlled DS-CDMA and exploiting satellite diversity is analyzed and its performance compared with more traditional communication system utilizing single satellite reception. Performance computed using a quasi-analytic method has been thoroughly validated by means of extensive Monte-Carlo simulations. The effect of MAI (multiple access interference) on the system performance has been investigated with power control for various practical scenarios. The quantitative results tend to indicate that diversity improves the system performance provided that an optimal power control scheme is employed. Convolutional coding with hard-decision decoding is considered to obtain specific results
Keywords :
Monte Carlo methods; Viterbi decoding; cellular radio; code division multiple access; convolutional codes; diversity reception; multibeam antennas; multiuser channels; optimisation; power control; radio links; radiofrequency interference; satellite antennas; satellite communication; spread spectrum communication; telecommunication control; CDMA-based LEO satellite system; Monte-Carlo simulations; communication system; convolutional coding; downlink performance; hard-decision Viterbi decoding; multi-beam multi-satellite system; multiple access interference; optimal power control; power controlled DS-CDMA; quasi-analytic method; satellite diversity; single satellite reception; system performance; terrestrial cellular system; Artificial satellites; Communication system control; Control systems; Downlink; Low earth orbit satellites; Multiaccess communication; Multiple access interference; Power control; Satellite communication; System performance;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891315
