Joint Signal Space Alignment and Precoding in Two-Way Relay Multi-user Networks

Author

Wang, Yong ; Yang, Liu ; Ai, Yun ; Li, Hui ; Zhang, Weidong

Author_Institution

State Key Lab. of ISN, Xidian Univ., Xi´´an, China

fYear

2012

fDate

19-21 Sept. 2012

Firstpage

385

Lastpage

389

Abstract

A new multi-user two-way transmission network is considered to fully utilize wireless system resource, and ensure transmission reliability, with assistant of an amplify-and-forward relay. In multiple access channel (MAC) phase, signal space alignment technique is employed, which cancel the multi-user interference. In broadcast channel (BC) phase, a new multiple-input multiple-output (MIMO) precoding matrix is designed to reduce the decoding complexity. Simulation result shows the average sum rate performance of the proposed system, and the achievable the degrees of freedom is evaluated.

Keywords

MIMO communication; amplify and forward communication; broadcast channels; interference suppression; matrix algebra; multi-access systems; precoding; telecommunication network reliability; wireless channels; BC phase; MAC phase; MIMO precoding matrix; amplify-and-forward relay; broadcast channel phase; decoding complexity reduction; degree of freedom; joint signal space alignment technique; joint signal space precoding; multiple access channel phase; multiple-input multiple-output precoding matrix; multiuser interference cancellation; transmission reliability; two-way relay multiuser transmission networks; wireless system; Antennas; Interference; MIMO; Relays; Time division multiple access; Vectors; Wireless communication; MIMO; multi-user; precoding; two-way relay;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Networking and Collaborative Systems (INCoS), 2012 4th International Conference on

Conference_Location

Bucharest

Print_ISBN

978-1-4673-2279-9

Type

conf

DOI

10.1109/iNCoS.2012.55

Filename

6337948