Indoor throughput and range improvements using standard compliant AP antenna diversity in IEEE 802.11a and ETSI HIPERLAN/2

MK Abdul-Aziz, MRG Butler, A Doufexi, AR Nix, PN Fletcher

Research output: Contribution to conferenceConference Abstract

378 Downloads (Pure)


This paper explores the application of spacetime diversity techniques to enhance the performance of 5 GHz WLANs. The analysis is based on systems conforming to either the IEEE 802.11a or ETSI HIPERLAN/2 standard. Two antennas are assumed at the Access Point (AP) with a single antenna at the Mobile Terminal (MT). Down-Link (DL) improvements are offered via the application of one of two fully compliant diversity schemes. The first technique can be applied to Time Division Duplex (TDD) OFDM systems (i.e. HIPERLAN/2) and is based on adaptive sub-band phase compensation. The second technique can be applied to non-TDD systems (i.e. 802.11a) and makes use of spatial transmit delay diversity. Up-Link (UL) improvement is offered via the use of spatial receive diversity with maximal ratio sub-band combining. Software simulated Physical (PHY) layer Packet Error Rate (PER) results are presented for the various methods and compared with those of an unaided transceiver. Combining the enhanced link level results with an analysis of the 802.11a and HIPERLAN/2 protocols, the expected throughput and range enhancements for both standards are computed.
Original languageEnglish
Pages2294 - 2298
Publication statusPublished - Oct 2001

Bibliographical note

Sponsorship: The authors wish to acknowledge QinetiQ Ltd. for the partial sponsoring of the work presented in this paper.

Terms of use: Copyright © 2001 IEEE. Reprinted from IEEE 54th Vehicular Technology Conference, 2001. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to

By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Name of Conference: 54th Vehicular Technology Conference 2001 (VTC 2001-Fall)
Venue of Conference: Atlantic City




Dive into the research topics of 'Indoor throughput and range improvements using standard compliant AP antenna diversity in IEEE 802.11a and ETSI HIPERLAN/2'. Together they form a unique fingerprint.

Cite this