Experimental Test-Bed for Studying Multiple Antenna Beamforming over Ultra Wideband Channels up to 12 GHz

Author

Dezfooliyan, Amir ; Weiner, Andrew M.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

1

Issue

5

fYear

2012

fDate

10/1/2012 12:00:00 AM

Firstpage

520

Lastpage

523

Abstract

An experimental setup is designed and implemented to study the performance of transmit beamforming techniques over realistic UWB Multiple-Input Single-Output (MISO) configurations. This setup can be used to investigate practical issues which are not usually addressed in simulation models, such as imperfect channel estimation or coherency between the multiple transmitters. Our implementation is based on the use of optical delay lines to apply appropriate time shifts to the output of an electrical arbitrary waveform generator (AWG). In this paper we assess the experimental accuracy of our setup over a 4 × 1 MISO system using time reversal beamforming.

Keywords

MIMO communication; array signal processing; channel estimation; microwave antenna arrays; radio transmitters; ultra wideband communication; wireless channels; electrical AWG; electrical arbitrary waveform generator; experimental test-bed; imperfect channel coherency; imperfect channel estimation; multiple antenna beamforming; multiple transmitters; optical delay lines; realistic UWB MISO configurations; realistic UWB multiple-input single-output configurations; time reversal beamforming; transmit beamforming techniques; ultrawideband channels; Antenna measurements; Array signal processing; Bandwidth; Delay; Optical transmitters; Transmitting antennas; Ultra wideband antennas; Transmit beamforming; multiple input—single output (MISO); ultra-wideband (UWB);

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/WCL.2012.072012.120289

Filename

6248139