Title :
Downlink capacity analysis for DS-CDMA satellite systems accounting for on-board power constraints
Author :
Cianca, Ernestina ; De Fina, Silvia ; Lojacono, Roberto ; Ruggieri, Marina ; Prasad, Ramjee
Author_Institution :
Dept. of Electron. Eng., Rome Univ., Italy
Abstract :
This paper presents a novel methodology for the analysis of the downlink of a DS-CDMA mobile satellite system which allows one to evaluate the impact of the power limitations expected in a satellite-based access in terms of capacity. The methodology has been applied to compare an optimum power control, providing BER-driven thresholds, with a pure signal-to-interference ratio (SIR)-based strategy. Relationships among service BER, channel states statistic and expected dynamic range of the outer-loop process are derived. Concluding remarks on the power management policy, and its impact on the overall capacity, are given
Keywords :
channel capacity; code division multiple access; error statistics; mobile satellite communication; multiuser channels; optimal control; power control; radio links; radiofrequency interference; spread spectrum communication; telecommunication control; BER-driven thresholds; DS-CDMA satellite systems; SIR; channel states statistic; downlink capacity analysis; dynamic range; on-board power constraints; optimum power control; outer-loop process; power limitations; power management policy; satellite-based access; service BER; signal-to-interference ratio; 3G mobile communication; Diversity reception; Downlink; Energy management; Interference; Multiaccess communication; Power control; Power system management; Satellite broadcasting; Wideband;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.878137
