A Study on Transmit Beamforming at Source Node in MISO-SISO/MIMO-MIMO AF Relays

Author

Kiyomi, Naohito ; Webber, Julian ; Nishimura, Toshihiko ; Ohgane, Takeo ; Ogawa, Yasutaka

Author_Institution

Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan

fYear

2012

fDate

6-9 May 2012

Firstpage

1

Lastpage

5

Abstract

A cooperative relay has been studied as a method to improve transmission quality in wireless mesh networks and cellular systems. Multiple antenna elements at a source node enable adaptive beamforming and thus improve total performance of relay transmission. In this paper, we propose simple transmit beamforming at a source node when the source node has two or more antenna elements and knows all channel information in MISO-SISO/MIMO-MIMO amplify-and-forward relays with direct link and evaluate the packet error rate. The simulation results show that the proposed method achieves both low complexity and high performance.

Keywords

MIMO communication; adaptive signal processing; amplify and forward communication; array signal processing; cellular radio; cooperative communication; diversity reception; error statistics; multifrequency antennas; wireless channels; wireless mesh networks; MIMO-MIMO AF relay; MISO-SISO AF relay; adaptive beamforming; amplify and forward communication; cellular system; channel information; cooperative relay; multiantenna element; packet error rate; relay transmission; source node; transmit beamforming; wireless mesh network; Array signal processing; MIMO; Proposals; Relays; Signal to noise ratio; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4673-0989-9

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2012.6240159

Filename

6240159