Interference Neutralization for Non-Regenerative Two-Way Relaying Networks—Part I: Feasibility

Author

Jianshu Zhang ; Ho, Zuleita Ka Ming ; Jorswieck, Eduard A. ; Haardt, Martin

Author_Institution

Commun. Res. Lab., Tech. Univ. Ilmenau, Ilmenau, Germany

Volume

63

Issue

17

fYear

2015

fDate

Sept.1, 2015

Firstpage

4544

Lastpage

4556

Abstract

In this paper, we study a nonregenerative two-way relaying (TWR) network with multiple repeaters and smart relays, where the smart relays use the amplify-and-forward relaying strategy. Interference-free transmission for such a network is realized using interference neutralization. The necessary and sufficient conditions for interference neutralization are characterized and verified. For an efficient system design, it turns out that one large relay equipped with as many antennas as possible is the best choice. Numerical simulations illustrate the feasibility region in terms of the number of relays and the number of relay antennas.

Keywords

adaptive antenna arrays; amplify and forward communication; radio repeaters; radiofrequency interference; relay networks (telecommunication); Interference-free transmission; TWR network; amplify and forward relaying strategy; interference neutralization; multiple repeater; nonregenerative two-way relaying network; smart relay antenna; Antennas; Electronic mail; Interference; MIMO; Relays; Repeaters; Signal processing; Amplify and forward relay; MIMO; interference neutralization; two-way relaying (TWR);

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2015.2446445

Filename

7124512