Title :
A novel channel allocation scheme to enhance resource utilization in CDMA/TDD
Author :
Cao, Yanbo ; Zhou, Bin ; Li, Chengshu
Author_Institution :
Modem Commun. Res. Inst., Northern Jiaotong Univ., Beijing, China
Abstract :
CDMA/TDD has the flexibility on the resources allocation. Most of CDMA/TDD system adopts same time slot allocation strategy for avoiding unexpected interference. However, the level of traffic asymmetry may be different from cell to cell. If these differences are great and cells are fully loaded, CDMA/TDD system adopting same time slot allocation strategy loses the system capacity. A novel cross time slot strategy based on smart antenna is presented to overcome this problem. The simulation results show that if the levels of the traffic asymmetry between neighboring cells are great and fully loaded, the system adopting cross time slot allocation can improve resource utilization.
Keywords :
adaptive antenna arrays; cellular radio; channel allocation; code division multiple access; radiofrequency interference; resource allocation; telecommunication traffic; time division multiplexing; CDMA/TDD; capacity analysis; channel allocation scheme; code division multiple access; cross time slot strategy; interference analysis; resource utilization; resources allocation; same time slot allocation strategy; smart antenna; time division duplexing; traffic asymmetry; Channel allocation; Downlink; Interference; Multiaccess communication; Multimedia communication; Probes; Resource management; Slot antennas; Traffic control; Wireless communication;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209660
