Title :
Two-way MMSE strategies for AF distributed relay networks under power constraint
Author :
Kanghee Lee ; Kwon, Hyuck M. ; Jie Yang ; Sawan, Edwin M. ; Hyuncheol Park
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Wichita State Univ., Wichita, KS, USA
Abstract :
This paper proposes amplify-and-forward (AF) relay strategies for two-way wireless distributed relay networks consisting of two sources with a single antenna per source and multiple N relays with a single antenna per relay. The objective of this paper is to determine optimal relay amplifying matrices (or vectors) under global and local power constraints at the relays based on the minimum mean square error (MMSE) criterion with/without the perfect cancelation of self-interference. With the derived optimal relay amplifying vectors, performances of the proposed two-way AF distributed relay system are investigated by presenting average bit error rate (BER), average MMSE behavior, and the sum of the achievable rate.
Keywords :
amplify and forward communication; antennas; interference suppression; least mean squares methods; matrix algebra; radio networks; relay networks (telecommunication); vectors; AF distributed relay networks; BER; amplify-and-forward relay strategy; average bit error rate; global power constraint; local power constraints; minimum mean square error criterion; optimal relay amplifying vector matrices; self-interference cancellation; two-way AF distributed relay system; two-way MMSE strategy; two-way wireless distributed relay networks; Antennas; Bit error rate; Relay networks (telecommunications); Signal to noise ratio; Vectors; Wireless communication; Amplify-and-forward (AF); minimum mean square error (MMSE); power constraint; two-way relaying;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2014 IEEE
Conference_Location :
Istanbul
DOI :
10.1109/WCNC.2014.6952721
