A Novel Transmission Diversity System in TDD-CDMA

摘要

This paper presents a novel transmission diver- sity scheme for code division multiple access system. Conven- tional diversity receivers in mobile stations require space and complicated circuits, however, the proposed diversity schemes present significant diversity effect without any diversity equip- ment at the mobile station. It is possible to use the transmitter diversity at the base station by using the feature of time dive- sion duplex (TDD) which has strongly correlated fading patterns in both forward and reverse link. Computer simulation is per- formed to evaluate the performance of the proposed systems for single user environment. The performance of the system 1, which select best situated antenna, is analyzed and the BER performance for multiple access is presented.