A Dirty Paper Coding Scheme for Multiuser MIMO Cognitive Radio Channel

被引：0
作者：
Sun, Yuting [1 ]
Xu, Wenbo [1 ]
Lin, Jiaru [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Key Lab Univ Wireless Commun, Minist Educ, Beijing, Peoples R China
来源：
2014 IEEE 25TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATION (PIMRC) | 2014年
基金：
国家教育部博士点专项基金资助; 中国国家自然科学基金;
关键词：
Cognitive radio channel; MIMO; dirty paper coding; zero-forcing; trellis shaping; CAPACITY;
D O I：
暂无
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 this paper, we propose a dirty paper coding (DPC) scheme for the cognitive radio channel where multiple cognitive users coexist with a primary user. The cognitive transmitter is assumed to know the primary signals non-causally and is equipped with two antennas, of which each transmits to a single-antenna receiver. In our proposal, zero-forcing DPC is employed to cancel the interference not only from the primary user but also from other cognitive users. The transmit power constraint is satisfied by the application of the multiuser trellis shaping. The optimal values of the power allocation parameter and the scaling factor are derived. The performance of this scheme is compared using simulations with that employing conventional trellis shaping.
引用
收藏
页码：1768 / 1772
页数：5
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