MSE and Outage Probability Based Training Power Allocations for Relay Networks

被引：4
|
作者：
Wu, Chunyan [1 ]
Wang, Dan [2 ]
Jing, Yindi [1 ]
机构：
[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada
[2] Henan Univ Sci & Technol, Informat Engn Coll, Luoyang 471023, Peoples R China
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2014年 / 62卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Amplify-and-forward (AF); power allocation; channel estimation; mean-square-error (MSE); outage probability (OP); CHANNEL ESTIMATION; COOPERATIVE DIVERSITY; PERFORMANCE ANALYSIS; AMPLIFY; SELECTION; DESIGN; PROTOCOLS;
D O I：
10.1109/TCOMM.2014.2321758
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：
For a multi-relay amplify-and-forward (AF) network, we investigate the power allocation problem during the channel training process for the destination to estimate the global channel state information (CSI) of the whole network. We consider two objective functions: the total mean-square-error (MSE) of all channel estimates and the end-to-end outage probability (OP) of the network under channel estimation error. Closed-form solutions for the joint power allocation among different relay paths and between the source and the relay at different training stages for each relay path are derived. Our simulation results demonstrate that the proposed MSE-based and OP-based power allocation schemes are superior to even power allocation.
引用
收藏
页码：2260 / 2270
页数：11
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