Title :
Joint detection for on/off uplink traffic in the TD-SCDMA system
Author :
Yun, Ji Young ; Sung, Dan Keun
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
Joint detection is used to reduce both inter-symbol interference (ISI) and multiple-access interference (MAI) in the time division-synchronous code division multiple access (TD-SCDMA) system. Conventional Rake receivers only consider desired user´s signal, while joint detection receivers take into account both desired user´s signal and other user signals for interference cancellation. If the traffic has on/off or discontinuous transmission (DTX), joint detection receivers need to determine the DTX of all connected users. A DTX decision algorithm, which uses a matched filter, is proposed. Simulation results show that joint detection with DTX decision yields better performance than joint detection without DTX decision.
Keywords :
code division multiple access; interference suppression; intersymbol interference; matched filters; multiuser detection; radio receivers; radiofrequency interference; telecommunication traffic; time division multiple access; Rake receivers; TD-SCDMA system; decision algorithm; discontinuous transmission; interference cancellation; intersymbol interference; joint detection receivers; matched filter; multiple-access interference; multiuser joint detection; time division-synchronous code division multiple access system; uplink traffic; Fading; Interference cancellation; Intersymbol interference; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers; Signal detection; Time division synchronous code division multiple access; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207108
