Title :
A novel multipath diversity scheme in TDD-CDMA systems
Author :
Wang, Ji-Bing ; Zhao, Ming ; Zhou, Shi-dong ; Yao, Yan
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
A novel multipath diversity scheme used in TDD-CDMA systems is presented. A FIR filter is added in the transmitter while a RAKE combiner is used in the receiver. The optimum FIR filter problem may be viewed as an eigenvalue problem. The multiple antennas system is also analyzed. Results show that this new scheme can greatly improve the output signal to noise ratio (SNR) compared with conventional RAKE receiver or pre-RAKE diversity system
Keywords :
FIR filters; code division multiple access; diversity reception; eigenvalues and eigenfunctions; filtering theory; multipath channels; multiuser channels; radio receivers; radio transmitters; RAKE combiner; RAKE receiver; SNR; TDD-CDMA systems; eigenvalue problem; multipath diversity; multiple antennas system; optimum FIR filter problem; output signal to noise ratio; pre-RAKE diversity system; receiver; transmitter; AWGN; Additive white noise; Fading; Fingers; Finite impulse response filter; Gaussian noise; Multipath channels; RAKE receivers; Signal to noise ratio; Transmitters;
Conference_Titel :
Radio and Wireless Conference, 1999. RAWCON 99. 1999 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-5454-0
DOI :
10.1109/RAWCON.1999.810934
