Title :
Communication capacity of TD-SCDMA systems
Author :
Xiao, Yang ; Lu, Ling-yun ; Habermann, Joachim
Author_Institution :
Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China
Abstract :
This paper shows that the capacity of TD-SCDMA system can be enlarged further, by adopting time-switching array antennas. The TD-SCDMA systems needn´t have spatial coding, since the spatial coding causes frequent spatial handoff problem. Analyzing the array pattern, we show that the interference of other sectors, also to be MAI, can be effectively suppressed by the array antennas for a sectored TD-SCDMA system. The capacity calculation based on WLS multiuser detector in the TD-SCDMA systems is presented. Simulations show that a TD-SCDMA system with a triply-sectored uplink channel can give a SINR (signal to interference plus noise ratio) and a BER (bit error rate) better than those in non-sectored systems with 10 times as many users.
Keywords :
antenna arrays; antenna radiation patterns; cellular radio; code division multiple access; error statistics; interference suppression; multiuser detection; radiofrequency interference; telecommunication channels; time division multiple access; BER; MAI; SINR; TD-SCDMA systems; WLS multiuser detector; array pattern analysis; bit error rate; communication capacity; multiple access interference; signal-to-interference-plus-noise ratio; spatial coding; spatial handoff problem; time division multiple access synchronous code division multiple access; time-switching array antennas; triply-sectored uplink channel; Antenna arrays; Bit error rate; Detectors; Mobile communication; Multiaccess communication; Multiple access interference; Multiuser detection; Pattern analysis; Signal to noise ratio; Time division synchronous code division multiple access;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209742
