Channel uncertainty for AF wireless 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

fYear

2014

fDate

6-9 April 2014

Firstpage

2898

Lastpage

2903

Abstract

This paper presents optimum relay amplifying matrices (or vectors) using the minimum mean square error (MMSE), maximum signal-to-noise ratio (SNR), zero-forcing (ZF), and matched-filter (MF) criteria for an amplify-and-forward (AF) wireless distributed relay network with a one-source-one-destination pair and iV-relay under the global power constraint (GPC) at the relays in a channel uncertainty (CU) environment. In addition, the local power constraint (LPC) at the relays is also considered for the MMSE criterion. With the derived optimum amplifying relay matrices, cost function and SNR behaviors, achievable rate, and relay selection scheme in the CU environment will be investigated theoretically and evaluated numerically.

Keywords

amplify and forward communication; channel estimation; least mean squares methods; matrix algebra; relay networks (telecommunication); wireless channels; AF wireless distributed relay networks; GPC; LPC; MF criteria; MMSE criteria; SNR behaviors; SNR criteria; ZF criteria; achievable rate; amplify-and-forward wireless distributed relay network; channel estimation; channel uncertainty; cost function; global power constraint; iV-relay; local power constraint; matched-filter criteria; maximum signal-to-noise ratio criteria; minimum mean square error criteria; one-source-one-destination pair; optimum relay amplifying matrices; relay selection scheme; zero-forcing criteria; Bit error rate; Channel estimation; Cost function; Relay networks (telecommunications); Signal to noise ratio; Wireless communication; AF; MF; MMSE; ZF; channel uncertainty (CU); power constraint;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2014 IEEE

Conference_Location

Istanbul

Type

conf

DOI

10.1109/WCNC.2014.6952911

Filename

6952911