Outage Performance of Selective Dual-Hop MIMO Relaying with OSTBC and Transmit Antenna Selection in Rayleigh Fading Channels

Abstract

For dual-hop multiple-input multiple-output (MIMO) decode-and-forward relaying systems, we propose a selective relaying scheme that uses orthogonal space-time block code (OSTBC) and transmit antenna selection with maximal-ratio combining (TAS/MRC) or vice versa at the first and second hops, respectively. The aim is to achieve an asymptotically identical performance to the dual-hop relaying system with only TAS/MRC, while requiring lower feedback overhead. In particular, we give the selection criteria based on the antenna configurations and the average channel powers for the first and second hops, assuming Rayleigh fading channels. Also, the numerical results are shown for the outage performance comparison between the dual-hop DF relaying systems with the proposed scheme, only TAS/MRC, and only OSTBC.

Efficient Approaches to Computer Vision and Pattern Recognition

“…Lee et al [5] proposed SDF-OSTBC/TAS, which is designed to achieve asymptotically performance identical to DF-TAS while requiring lower feedback overhead. Their proposal describes a selective relaying scheme that uses OSTBC and TAS with maximal-ratio combining (MRC) or vice versa at the first and second hops, respectively.…”