The smart wireless LAN system: physical layer design and results

Author

Okamoto, Garret ; Xu, Guanghan

Author_Institution

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

Volume

3

fYear

1997

fDate

4-7 May 1997

Firstpage

1312

Abstract

The smart wireless LAN (SWL) system integrates SDMA with the IEEE 802.11 wireless LAN standard to enable multiple users to transmit on a wireless LAN at the same time. The physical layer design of the SWL system allows for remote terminals to transmit and receive as specified in the 802.11 standard. The SWL base station uses an antenna array and SDMA techniques to simultaneously transmit and receive data from up to four terminals at once. Downlink is performed via a delay and combination at the base station while utilizing standard beamforming techniques. Uplink signals are separated and decoded at the base station using a simple pseudoinverse technique utilizing the spatial signature knowledge found previously. Experimental results demonstrate the feasibility of using SDMA in our wireless LAN scenario. Computer simulation results show the feasibility and potential of this method

Keywords

IEEE standards; access protocols; antenna arrays; data communication; delays; inverse problems; land mobile radio; multi-access systems; spread spectrum communication; telecommunication standards; wireless LAN; IEEE 802.11 wireless LAN standard; SDMA; SS-SDMA protocol; SWL base station; SWL system; antenna array; beamforming; combination; decoded; delay; downlink; physical layer design; pseudoinverse technique; remote terminals; smart wireless LAN protocol; spatial signature knowledge; spread spectrum space division multiple access protocol; uplink signals; Antenna arrays; Array signal processing; Base stations; Delay; Downlink; Multiaccess communication; Physical layer; Receiving antennas; Transmitting antennas; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1997, IEEE 47th

Conference_Location

Phoenix, AZ

ISSN

1090-3038

Print_ISBN

0-7803-3659-3

Type

conf

DOI

10.1109/VETEC.1997.605393

Filename

605393