Dual-hop Amplify-and-Forward Transmission with Imperfect Channel Estimates at the Relay

被引：0

作者：

Hadzi-Velkov, Zoran ^{[1
]}

Michalopoulos, Diomidis S. ^{[2
]}

Karagiannidis, George K. ^{[3
]}

Schober, Robert ^{[2
]}

机构：

[1] Ss Cyril & Methodius Univ, Fac Elect Engn & Informat Technol, Skopje, Macedonia

[2] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC, Canada

[3] Aristotle Univ Thessaloniki, Dept Elect & Comp Engn, Thessaloniki, Greece

来源：

2012 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) | 2012年

关键词：

M FADING CHANNELS; SELECTION; PERFORMANCE; SYSTEMS;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

With reference to the typical three-node amplify-and-forward (AF) relaying setup, where a single relay assists the communication between a source terminal and a destination terminal, we investigate the effect of outdated channel state information (CSI) at the relay on the overall performance. In particular, we consider CSI-assisted (i.e., variable-gain) AF relaying and derive expressions for the outage and the error probability for the case where the relay gain is adapted based on outdated estimates of the source-relay channel, when operating over Nakagami-m fading. The obtained expressions are functions of the scale and shape fading parameters, as well as the correlation coefficient between the actual source-relay channel and its corresponding estimate. Numerical results reveal a considerable degradation of the overall performance, when CSI acquisition is not perfect.

引用

页数：6

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