Minimum MSE Criteria Design of Amplify-and-Forward MIMO Relay Wireless Communication System

Apriana Toding

In this paper, we study a channel estimation scheme for a two-hop multiple-input multiple-output (MIMO)relay system. The amplify-and-forward (AF) relaying is an efficient way to extend radio range and improve link reliability with a low implementation cost. While the research on the AF relaying in a singleantenna scenario has matured, its application to broadband radio transmission utilizing MIMO techniques still needs more effort to overcome several practical challenges, such as large overheads for channel estimation and reliability to the channel estimation errors. This paper reviews some recently proposed linear transceiver designs based on the minimum mean squared error (MSE) criterion and shows that the proposed MSE decomposition and relaxation method can lead to an efficient solution for those challenges. Numerical result several the effectiveness of the proposed schemes.

Volume 11 | Issue 7

Pages: 644-649