Title :
MMSE Relaying Strategy for Two-Way Amplify-and-Forward Wireless Networks
Author :
Kanghee Lee ; Kwon, Hyuck M. ; Jie Yang ; Sawan, Edwin M. ; Hyuncheol Park ; Lee, Y.H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Wichita State Univ., Wichita, KS, USA
Abstract :
This paper studies amplify-and-forward (AF) relay strategies for two-way wireless relay networks consisting of two sources with a single antenna and multiple relays with a single antenna. The closed form of relay amplifying matrices (vectors) with the perfect cancelation of self-interference under both no channel uncertainty and channel uncertainty is presented based on the minimum mean square error (MMSE) criterion. With the derived optimal relay amplifying matrices, the MMSE cost function behavior, the relay power usage, and the sum of the achievable rate are analyzed. Additionally, a filter for each destination will be provided to remove the influences of noises at the receivers.
Keywords :
amplify and forward communication; least mean squares methods; matrix algebra; relay networks (telecommunication); wireless channels; AF relay strategies; MMSE cost function; MMSE relaying strategy; amplify-and-forward wireless networks; channel uncertainty; minimum mean square error; optimal relay amplifying matrices; relay amplifying matrices; single antenna; wireless relay networks; Bit error rate; Cost function; Relays; Signal to noise ratio; Uncertainty; Vectors; Wireless communication;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2013 IEEE 78th
Conference_Location :
Las Vegas, NV
DOI :
10.1109/VTCFall.2013.6692286
