Analysis of bi-directional multi-antenna relaying with imperfect self-interference cancellation

Author

Lopes, Pedro R S ; Silva, Yuri C B ; Stancanelli, Elvis M G

Author_Institution

Teleinformatics Eng. Dept., Fed. Univ. of Ceara, Fortaleza, Brazil

fYear

2011

fDate

24-26 Oct. 2011

Firstpage

1

Lastpage

5

Abstract

This article considers the two-way bidirectional relaying scenario, in which it is crucial to improve the transmission efficiency to make up for the extra hop in the communication. Single-antenna two-way relaying can be implemented through a Self-Interference (SI) cancellation scheme known as Bidirectional Amplification of Throughput (BAT). This paper analyzes the impact that an imperfect cancellation has on the system performance. Additionally, some insights are provided on the achievable gains when multi-antenna relay stations are employed. An extension of the BAT concept to this multi-antenna case is formulated and compared to a Zero-Forcing (ZF) approach.

Keywords

amplification; antenna arrays; interference suppression; BAT concept; SI cancellation scheme; ZF approach; bidirectional amplification of throughput; bidirectional multiantenna relaying; imperfect cancellation; multiantenna case; multiantenna relay stations; self-interference cancellation; single-antenna two-way relaying; system performance; transmission efficiency; two-way bidirectional relaying scenario; zero-forcing approach; Algorithm design and analysis; Antennas; Estimation; Interference; Relays; Signal to noise ratio; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (LATINCOM), 2011 IEEE Latin-American Conference on

Conference_Location

Belem do Para

Print_ISBN

978-1-4673-0277-7

Type

conf

DOI

10.1109/LatinCOM.2011.6107405

Filename

6107405