Outage probability analysis of a MC-DS-CDMA system with variable repetition code rate and spreading factor

被引：2
|
作者：
Chen, Yongfeng [1 ]
Sousa, Elvino S. [1 ]
机构：
[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
来源：
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2006年 / 24卷 / 06期
关键词：
code-division multiple access (CDMA); multicarrier; outage probability; repetition code;
D O I：
10.1109/JSAC.2005.864008
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In the multicarrier direct-sequence code-division multiple access with repetition code system, decreasing the code rate can result in greater frequency diversity. However, to keep the same transmit bit rate, the spreading factor in each subcarrier needs to be reduced. In this paper, we use the outage probability as a criterion for these two system parameters' design. We first examine the condition on code rate for the uncorrelated fading channel assumption. The system performance is derived and the outage probability is obtained in closed forms for equal and unequal transmit bit energy scenarios. The relation between the spreading factor and the rate of the repetition code is investigated by observing the outage probability equation.
引用
收藏
页码：1236 / 1243
页数：8
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