Reduced complexity MIMO processing for WLAN (IEEE 802.11b) applications

Author

Mostafa, Raqibul ; Robert, Max ; Reed, Jeffrey H.

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

2003

fDate

10-13 Aug. 2003

Firstpage

171

Lastpage

174

Abstract

In this paper, we propose and evaluate a reduced complexity multiple-input-multiple-output (MIMO) system to enhance signal to noise ratio (SNR) and throughput of a WLAN system. The algorithm is based on phase scanning at the transmitter side and maximal ratio combining (MRC) at the receiver side with feedback from the receiver to assist in setting the optimal phase value at the transmitter. This feedback channel is available in the IEEE 802.11b standard, and thus, the proposed algorithm introduces minor modifications to the existing air interface. Simulation results show that the proposed technique increases the throughput sustainability of an 802.11b system.

Keywords

MIMO systems; diversity reception; feedback; radio receivers; radio transmitters; telecommunication channels; wireless LAN; IEEE 802.11b; SNR; WLAN applications; feedback channel; maximal ratio combining; multiple-input-multiple-output; optimal phase value; phase scanning; receiver; reduced complexity MIMO processing; signal to noise ratio; transmitter; wireless local area network; Application software; Diversity reception; Feedback; MIMO; Radio transmitters; Receiving antennas; Signal to noise ratio; Throughput; Wireless LAN; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Conference, 2003. RAWCON '03. Proceedings

Print_ISBN

0-7803-7829-6

Type

conf

DOI

10.1109/RAWCON.2003.1227920

Filename

1227920