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Throughput enhancement of OFDM based WLANs using space time block codes and time domain least squares channel estimation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publication5th European Personal Mobile Communications Conference, Glasgow
Publisher or commissioning bodyInstitution of Electrical Engineers (IEE)
Publication dateApr 2003
Pages111 - 115
ISBN (Print)0852967535
DOIs
StatePublished

Conference

Conference5th European Personal Mobile Communications Conference
CountryUnited Kingdom
CityStrathclyde
Period1/04/03 → …

Abstract

HIPERLAN/2 802.11a, 802.11g and HiSWANa wireless local area networks (WLAN) employ coded orthogonal frequency division multiplexing (COFDM) and provide data rates of up to 54 Mbit/s in a 20 MHz bandwidth. In this paper, space-time block coding (STBC) techniques are considered as a means of enhancing the performance of COFDM WLAN. To perform channel estimation for multiple transmit and receive antennas, it is necessary to make transmitted pilot signals orthogonal in space and time. This was achieved using a Hadamard design. A time domain least square channel estimator was used to achieve high performance. Packet error rate (PER) performance results for, the case of 2 Tx and 2 Rx antennas are presented and throughput enhancements are evaluated. It is observed that STBC doubles the link throughput for low SNR values. For the case of an 802.11a/g network, results for different packet lengths are also presented

Additional information

Conference Proceedings/Title of Journal: IEE 5th European Personal Mobile Communications Conference, 2003 Rose publication type: Conference contribution Sponsorship: The authors wish to acknowledge the support of the IST SATURN and ROMANTM projects which are funded by the European Union Other identifier: IEE Conf. Publ. No. 492

Research areas

  • OFDM modulation, channel estimation, wireless LAN

Event

5th European Personal Mobile Communications Conference

Duration1 Apr 2003 → …
CountryUnited Kingdom
CityStrathclyde

Event: Conference

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