Title :
Comparison between various diversity techniques of the pre-RAKE combining system in TDD/CDMA
Author :
Kadous, Tamer A. ; Sourour, Essam E. ; El-Khamy, Said E.
Author_Institution :
Dept. of Electr. Eng., Alexandria Univ., Egypt
Abstract :
This paper studies the performance of time division duplex (TDD) code division multiple access (CDMA) system with pre-RAKE transmission in a generalized Rayleigh fading multipath channel. We present a comparison between three various diversity combining techniques, namely, maximal ratio combining (MRC), equal gain combining (EGC) and zero-forcing equalization (ZFE), all supplemented by a selection diversity for the strongest paths in gain. We also consider the effect of imperfect channel estimation on the system performance
Keywords :
Rayleigh channels; code division multiple access; diversity reception; fading; land mobile radio; multipath channels; pseudonoise codes; radiofrequency interference; spread spectrum communication; time division multiplexing; CDMA; EGC; MRC; TDD; TDD/CDMA; ZFE; diversity combining; equal gain combining; generalized Rayleigh fading multipath channel; imperfect channel estimation; maximal ratio combining; performance; pre-RAKE combining system; pre-RAKE transmission; selection diversity; system performance; time division duplex code division multiple access; zero-forcing equalization; Channel estimation; Delay; Diversity reception; Fading; Multiaccess communication; Multipath channels; Power control; Research and development; System performance; USA Councils;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.606017
