Title :
Downlink performance of cell-partitioned CDMA cellular systems with time-slot assignment
Author_Institution :
YRP Mobile Telecommun. Key Technol. Res. Labs., Yokosuka, Japan
Abstract :
There have been studies to divide CDMA cellular systems in the frequency, time, and space domains to enhance the system capacity and improve the system efficiency under nonuniform traffic conditions. This paper describes a cell-partitioned CDMA system in which the time slots are assigned to several subareas in a cell. These time slots are assigned according to different patterns in the adjacent cells. The downlink system capacity increased by about 15% under a uniform traffic distribution. Evaluation using a hot-spot model showed that the downlink quality improved when cells were adaptively partitioned according to the traffic distribution
Keywords :
cellular radio; channel capacity; code division multiple access; multiuser channels; radio links; radiofrequency interference; telecommunication traffic; cell-partitioned CDMA cellular systems; code division multiple access; distribution; downlink performance; downlink quality; downlink system capacity; frequency domain; hot-spot model; nonuniform traffic; signal-to-interference ratio; space domain; system efficiency; time domain; time-slot assignment; uniform traffic distribution; Communication system traffic control; Degradation; Downlink; Frequency conversion; Interference; Laboratories; Multiaccess communication; Space technology; Telecommunication traffic; Traffic control;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965457
