Nonregenerative MIMO Relaying With Optimal Transmit Antenna Selection

Author

Peters, Steven W. ; Heath, Robert W., Jr.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX

Volume

15

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

421

Lastpage

424

Abstract

We derive optimal SNR-based transmit antenna selection rules at the source and relay for the nonregenerative half-duplex MIMO relay channel. While antenna selection is a suboptimal form of beamforming, it has the advantage that the optimization is tractable and can be implemented with only a few bits of feedback from the destination to the source and relay. We compare the bit error rate of optimal antenna selection at both the source and relay to other proposed beamforming techniques and propose methods for performing the necessary limited feedback.

Keywords

MIMO communication; error statistics; feedback; optimisation; transmitting antennas; wireless channels; bit error rate; feedback; nonregenerative half-duplex MIMO relay channel; optimal SNR-based transmit antenna selection; optimization; Antenna feeds; Antennas and propagation; Array signal processing; Bit error rate; Cooperative systems; Diversity methods; Feedback; MIMO; Relays; Transmitting antennas; Antenna selection; cooperative systems; diversity methods; multiple-input multiple-output (MIMO) systems; relaying;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2008.921466

Filename

4494577