Title :
Robust Joint Precoder-Decoder Design for PNC Based MIMO Two-Way Relaying System
Author :
Jayasinghe, L. K. Saliya ; Rajatheva, Nandana ; Latva-aho, Matti
Author_Institution :
Centre for Wireless Commun., Univ. of Oulu, Oulu, Finland
Abstract :
In this paper, we investigate a robust joint precoder-decoder design scheme for a multiple-input multiple-output (MIMO) physical layer network coding (PNC) based two-way relay system. Precoders at the source nodes and decoder at the relay node are used to facilitate PNC operations during multiple access stage. Both channel estimation error and antenna correlations are used to formulate an optimization problem to minimize weighted mean square error (WMSE) under a total power constraint. The problem becomes non- convex, and we propose an algorithm to solve it optimally. The effect of estimation error, antenna correlation parameters, weighting parameters, and number of antennas at nodes are also considered in the numerical analysis.
Keywords :
MIMO communication; channel estimation; mean square error methods; numerical analysis; optimisation; precoding; relay networks (telecommunication); MIMO two way relaying system; PNC; WMSE; antenna correlations; channel estimation error; multiple access stage; multiple-input multiple-output; numerical analysis; optimization problem; physical layer network coding; robust joint precoder decoder design; weighted mean square error; Antennas; Channel estimation; Correlation; Decoding; Estimation error; Joints; Relays;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2013 IEEE 78th
Conference_Location :
Las Vegas, NV
DOI :
10.1109/VTCFall.2013.6692394
