Title :
Multipath propagation effects on a CDMA cellular system
Author :
Chan, Norbert L B
Author_Institution :
Comput. Devices Canada Ltd., Calgary, Alta., Canada
fDate :
11/1/1994 12:00:00 AM
Abstract :
The performance of the reverse link of a code division multiple access cellular system is evaluated. At the base station, the signal from each user is demodulated by a coherent BPSK RAKE receiver. Parameters for the model of the impulse response of the channel were taken from measurements of the digital cellular channel in Toronto. The signal-to-noise ratio (SNR) for a received signal is used to measure the performance of the reverse link. The variation in SNR of received signals at the base station should be as small as possible to reduce interference in the network. A power control scheme to lower the variation in SNR of the received signals is analyzed. The effects of lowering the bandwidth of the transmitted signal were also investigated
Keywords :
cellular radio; code division multiple access; digital radio systems; radio receivers; radiotelephony; radiowave propagation; spread spectrum communication; telecommunication channels; transient response; BPSK RAKE receiver; CDMA cellular system; SNR; Toronto; base station; channel impulse response; code division multiple access; demodulation; digital cellular channel; interference; measurements; multipath propagation; performance; power control; received signal; reverse link; signal-to-noise ratio; transmitted signal bandwidth; Bandwidth; Base stations; Binary phase shift keying; Fading; Interference; Multiaccess communication; Multipath channels; Power control; Signal analysis; Signal to noise ratio;
Journal_Title :
Vehicular Technology, IEEE Transactions on
