Title :
A novel transmission diversity system in TDD-CDMA
Author :
Jeong, Incheol ; Nakagawa, Masao
Author_Institution :
Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan
Abstract :
This paper presents a novel transmission diversity scheme for code division multiple access system. Conventional diversity receivers in mobile stations require space and complicated circuits, however, the proposed diversity schemes presents significant diversity effect without any diversity equipment at the mobile station. It is possible to use the transmitter diversity at the base station by using the feature of time division duplex (TDD) which has strongly correlated fading patterns in both forward and reverse link. Computer simulation is performed to evaluate the performance of the proposed systems for single user environment. The performance of the system 1 is analyzed and the BER performance for the multiple access is presented
Keywords :
Rayleigh channels; code division multiple access; diversity reception; error statistics; land mobile radio; multiuser channels; radio transmitters; spread spectrum communication; BER performance; Rayleigh faded paths; TDD-CDMA; base station; code division multiple access system; computer simulation; correlated fading patterns; diversity receivers; forward link; mobile stations; performance evaluation; reverse link; single user environment; time division duplex; transmission diversity system; transmitter diversity; Base stations; Bit error rate; Circuits; Computer simulation; Fading; Multiaccess communication; Performance analysis; Performance evaluation; Space stations; Transmitters;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.722482
