Combined equalization and decoding for IEEE 802.11b devices

Author

Heegard, Chris ; Coffey, Seán ; Gummadi, Srikanth ; Rossin, Eric J. ; Shoemake, Matthew B. ; Wilhoyte, Michael

Author_Institution

Wireless Networking Bus. Unit, Texas Instrum. Inc., Santa Rosa, CA, USA

Volume

21

Issue

2

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

125

Lastpage

138

Abstract

Receivers for wireless local area networks based on the IEEE 802.11b standard are required to operate well in heavy multipath, as well as additive noise impairments. This paper discusses a practical approach to combined equalizing and decoding for IEEE 802.11b systems, based on the Fano sequential decoding algorithm. Simulation results are presented demonstrating the greatly improved performance attained using this algorithm to the performance obtained using separate equalization and decoding blocks. This method has been implemented in TI´s ACX100 chip. Measured laboratory results are presented that demonstrate superior throughput results obtained from this device compared with throughputs obtained by competitive devices available on the market.

Keywords

IEEE standards; equalisers; multipath channels; packet radio networks; radio receivers; sequential decoding; telecommunication standards; wireless LAN; Fano sequential decoding algorithm; IEEE 802.11b devices; TI ACX100 chip; additive noise; combined equalization decoding; multipath; receivers; wireless local area networks; AWGN; Additive white noise; Baseband; Decoding; Gaussian noise; Instruments; RF signals; Signal processing; Throughput; Wireless LAN;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/JSAC.2002.807558

Filename

1177178