Erlang Capacity of CDMA Systems Using Optimized Sectoring

被引：0
作者：
Insoo Koo
Aftab Ahmad
Kiseon Kim
机构：
[1] UFON Research Center, Kwang-Ju Inst. of Sci./Technology, Kwangju
[2] Sch. Comp. Sci., Telecom./Info. S., DePaul University, Chicago, IL 60604-2301
[3] Department of Information Comm., Kwang-Ju Inst. of Sci./Technology, Kwangju
来源：
International Journal of Wireless Information Networks | 2003年 / 10卷 / 2期
关键词：
CDMA; Erlang capacity; Optimized-sectoring;
D O I：
10.1023/A:1025317611755
中图分类号：
学科分类号：
摘要：
In this paper, we evaluate the Erlang capacity of CDMA systems according to two sector operation methods: optimized sectoring and fixed-angle sectoring. For the performance analysis, a multidimensional Markov channel model is developed. The improved Erlang capacity through optimized sectoring is quantified over fixed-angle sectoring. As a result, we can get about 20% capacity improvement for optimized sectoring over fixed-angle sectoring under the uniform traffic distribution among sectors. In addition, optimized sectoring provides a constant Erlang capacity improvement (about 3.6 times) over an omnidirectional case, even when traffic loads among sectors are nonuniformly distributed. On the other hand, fixed-angle sectoring results in the actual capacity improvement 1.8-3 times over an omnidirectional case, depending on the traffic distribution among sectors.
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收藏
页码：105 / 110
页数：5
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