Title :
Role of PAF in a multi-satellite CDMA based LEO satellite system
Author :
Waheed, Umrani A. ; K, Dubey Vimal
Author_Institution :
Div. of Commun. 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 is computed on the BER floor with coherent detection. The performance evaluated 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 performance has been investigated with the power amplitude factor (PAF). The quantitative results tend to indicate that diversity improves the system performance provided that optimal power control scheme is employed. A realistic convolutional coding with hard-decision decoding is assumed to obtain specific results
Keywords :
Monte Carlo methods; code division multiple access; convolutional codes; decoding; diversity reception; error statistics; fading channels; mobile satellite communication; multiuser channels; personal communication networks; power control; radio links; radiofrequency interference; signal detection; spread spectrum communication; telecommunication control; BER floor; LEO satellite system; Monte-Carlo simulations; PAF; coherent detection; convolutional coding; downlink; hard-decision decoding; multi-satellite CDMA; multiple access interference; optimal power control; performance evaluation; power amplitude factor; power controlled DS-CDMA; quasi-analytic method; satellite diversity; system performance; Artificial satellites; Bit error rate; Communication system control; Control systems; Downlink; Low earth orbit satellites; Multiaccess communication; Multiple access interference; Performance analysis; Satellite communication;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886147
