Title :
Multiuser Transmission in Conjunction with Smart Antennas for the Downlink of TDD-CDMA System
Author :
Zheng, Jiang ; Cheng, Yang Da
Author_Institution :
Wireless Commun. Res. Center, Beijing Univ. of Posts & Telecommun.
Abstract :
The multiuser transmission (MUT) is an effective way to eliminate the multiple-access interference (MAI) and the inter symbol interference (ISI) in the downlink channel of TDD-CDMA. In this paper, a novel MUT model is developed. In the model, the MUT combined with smart antennas (SA) is taken to improve the performance of TDD-CDMA in the spatial-temporal channel. Two different MUT algorithms in conjunction with the beamforming algorithm of SA are researched and the simulation results illustrate that the new MUT model achieves the better performance than the MUT model without SA
Keywords :
adaptive antenna arrays; code division multiple access; intersymbol interference; matrix algebra; radio links; time division multiplexing; wireless channels; ISI; MAI; TDD-CDMA system; beamforming algorithm; downlink channel; inter symbol interference; multiple-access interference; multiuser transmission; smart antennas; spatial-temporal channel; Directive antennas; Downlink; Interference elimination; Intersymbol interference; Multiaccess communication; Multiple access interference; Multiuser detection; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.85
