Title :
Erlang capacity for satellite CDMA systems with adaptive power control and interference cancellation
Author :
Guo, Zihua ; Letaief, Khaled
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
Abstract :
In satellite DS/CDMA communication systems, power control (PC) is critical, and only open loop power control (OLPC) is feasible due to the large propagation delay. We propose an adaptive OLPC method for DS/CDMA satellite communication systems based on a Markov chain channel model. Then, under the assumption that multiuser interference cancellation (IC) is employed, we derive the Erlang capacity of the satellite DS/CDMA system with the OLPC scheme. It is shown that IC and power control error (PCE) affects the Erlang capacity significantly. In addition, dual-satellite diversity is considered and we show that diversity can improve the Erlang capacity of such a system greatly
Keywords :
Markov processes; adaptive control; channel capacity; code division multiple access; diversity reception; interference suppression; mobile satellite communication; multiuser channels; power control; radiofrequency interference; spread spectrum communication; telecommunication control; Erlang capacity; Markov chain channel model; adaptive open loop power control; dual-satellite diversity; interference cancellation; large propagation delay; mobile satellite communications; multiuser interference cancellation; power control error; satellite DS/CDMA communication systems; Adaptive systems; Artificial satellites; Diversity methods; Error correction; Interference cancellation; Multiaccess communication; Power control; Power system modeling; Propagation delay; Satellite communication;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853076
