Title :
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
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;
Conference_Titel :
Communications (LATINCOM), 2011 IEEE Latin-American Conference on
Conference_Location :
Belem do Para
Print_ISBN :
978-1-4673-0277-7
DOI :
10.1109/LatinCOM.2011.6107405
