Title :
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
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;
Conference_Titel :
Intelligent Networking and Collaborative Systems (INCoS), 2012 4th International Conference on
Conference_Location :
Bucharest
Print_ISBN :
978-1-4673-2279-9
DOI :
10.1109/iNCoS.2012.55
