Title :
Hybrid DS/SFH CDMA system with near-far effect and imperfect power control
Author :
Grujev, Suzana ; Rooimans, R.G.A. ; Prasad, Ramjee
Author_Institution :
Telecommun. & Traffic-Control Syst. Group, Delft Univ. of Technol., Netherlands
Abstract :
The performance of a hybrid direct sequence/slow frequency hopping CDMA system is investigated in the situation with and without power control, using QPSK modulation. The mobile-to-base link is modeled as a Rayleigh fading channel with all users experiencing independent fading, a theoretical analysis of the effect of imperfect power control on the link capacity and efficiency is presented using an analytical model. Finally, selection diversity is introduced to improve the performance of the system
Keywords :
Rayleigh channels; channel capacity; code division multiple access; diversity reception; fading; frequency hop communication; land mobile radio; personal communication networks; power control; pseudonoise codes; quadrature phase shift keying; radio links; spread spectrum communication; telecommunication control; QPSK modulation; Rayleigh fading channel; analytical model; bit error probability; direct sequence spread spectrum communication system; efficiency; hybrid DS/SFH CDMA system; imperfect power control; independent fading; link capacity; mobile to base link; near-far effect; personal communication services; selection diversity; slow frequency hopping; system performance; Analytical models; Base stations; Frequency synthesizers; Mobile communication; Multiaccess communication; Phase modulation; Power control; Power system modeling; Spread spectrum communication; Traffic control;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563795
