Title :
Outage probability of a cellular hybrid DS/SFH CDMA system
Author :
Grujev, Suzana ; Prasad, Ramjee
Author_Institution :
KPN Res., R. PTT Netherlands, Leidschendam, Netherlands
Abstract :
The paper presents the performance analysis in terms of outage probability of a cellular hybrid DS/SFH CDMA system for the analytical channel model. The mobile-to-base link is modelled as a Rayleigh fading channel with all users experiencing independent fading. The standard receiver for CDMA systems is susceptible to the near-far effect problem. Power control techniques attempt to overcome near-far effect by varying transmitted power levels to ensure that all signals are received with equal power levels. We evaluated the performance for given a bit rate in a situation with and without power control and selection diversity. Since the power control algorithms cannot perfectly compensate for power fluctuations in a mobile communications channel, the performance of the system is reduced for a given BER. This paper examines the effect of imperfect power control on the number of users by extending analytical techniques that account for multiple access and adjacent cell interference
Keywords :
Rayleigh channels; cellular radio; code division multiple access; diversity reception; fading; frequency hop communication; power control; probability; radio links; radio receivers; radiofrequency interference; spread spectrum communication; telecommunication control; BER; Rayleigh fading channel; adjacent cell interference; analytical channel model; analytical techniques; bit rate; cellular hybrid DS/SFH CDMA system; equal power levels; imperfect power control; independent fading; mobile communications channel; mobile-to-base link; multiple access interference; near-far effect problem; outage probability; performance analysis; power control algorithms; power control techniques; power fluctuations compensation; receiver; selection diversity; system performance; transmitted power levels; Analytical models; Bit rate; Fading; Fluctuations; Mobile communication; Multiaccess communication; Performance analysis; Power control; Power system modeling; Rayleigh channels;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.624399
