Study of Segment Training Based Individual Channel Estimation for Two-Way Relay Network

Author

Shun Zhang ; Feifei Gao ; Yun-Hui Yi ; Chang-Xing Pei

Author_Institution

State Key Lab. of Integrated Services Networks, Xidian Univ., Xi´´an, China

Volume

17

Issue

2

fYear

2013

fDate

Feb-13

Firstpage

401

Lastpage

404

Abstract

In this letter, we design a segment training based individual channel estimation (STICE) scheme in the classical three-node it amplify-and-forward two-way relay network (TWRN). We resort to linear minimum-mean-square-error (LMMSE) estimators to achieve the in-channel estimation without sign ambiguity through two consecutive segments. We derive the mean-square-error (MSE) of the individual channel estimation, from which the optimal training and the optimal relay´s power allocation are obtained. Numerical results are provided to corroborate the provided studies.

Keywords

amplify and forward communication; channel estimation; least mean squares methods; relay networks (telecommunication); LMMSE estimator; STICE scheme; classical three-node amplify-and-forward two-way relay network; in-channel estimation; linear minimum mean square error estimator; optimal relay power allocation; optimal training; segment training-based individual channel estimation scheme; three-node it amplify-and-forward TWRN; Channel estimation; Estimation; Lead; Relays; Resource management; Training; Vectors; Individual channel estimation; optimal design; power allocation; two-way relay network;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.122012.122183

Filename

6400354