Title :
The use of Probability Control in CDMA systems
Author :
Bergel, Itsik ; Messer, Hagit
Author_Institution :
Dept. of Electr. Eng.-Syst., Tel Aviv Univ.
Abstract :
CDMA systems commonly use power control mechanism to reduce the amount of interference between the users. We challenge this common practice by considering noncontinuous transmission and probability control mechanism. We analyze the effect of the transmission probability on the average signal-to-noise plus interference ratio (SIR), and give a sufficient condition for CDMA systems in which probability control (and not power control) is the optimal method for balancing users´ interference. We also demonstrate this condition on a CDMA system with a single RAKE finger. Results are applicable both for CDMA and for impulse radio (IR) systems
Keywords :
code division multiple access; interference suppression; probability; radiofrequency interference; telecommunication control; CDMA systems; SIR; impulse radio; interference; noncontinuous transmission; probability control; signal-to-noise plus interference ratio; single RAKE finger; transmission probability; Bit error rate; Cause effect analysis; Control systems; Interference; Multiaccess communication; Optimal control; Power control; Signal analysis; Sufficient conditions; Upper bound;
Conference_Titel :
Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-9403-8
DOI :
10.1109/SSP.2005.1628752
