Title :
CDMA overlay in the presence of power control error
Author :
Yu, Ai ; Wang, Jiangzhou
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
Adaptive power control has widely been used in the DS/CDMA system to overcome the so called “near-far” problem. This paper studies the effect of an open-loop power control error on the performance of a CDMA system, which is overlaid in downlink by a narrowband signal. The power control error is assumed to be log-normally distributed. The performance of the CDMA overlay system is simulated via Monte Carlo simulation
Keywords :
Rayleigh channels; adaptive control; code division multiple access; interference suppression; land mobile radio; log normal distribution; multiuser channels; power control; radio links; radiofrequency interference; spread spectrum communication; telecommunication control; BER performance; CDMA overlay system; DS/CDMA system; Monte Carlo simulation; Rayleigh statistics; adaptive power control; downlink; frequency nonselective channel; log-normal distributed shadowing; narrowband interference; narrowband signal; near-far problem; power control error; suppression filter; system performance; Base stations; Downlink; Error correction; Interference; Multiaccess communication; Narrowband; Power control; Power measurement; Shadow mapping; Signal processing;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778352
