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

A Doufexi; SMD Armour; AR Nix; MA Beach

doi:10.1049/cp:20030229

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

A Doufexi, SMD Armour, AR Nix, MA Beach

Communication Systems and Networks

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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

Translated title of the contribution	Throughput enhancement of OFDM based WLANs using space time block codes and time domain least squares channel estimation
Original language	English
Title of host publication	5th European Personal Mobile Communications Conference, Glasgow
Publisher	Institution of Engineering and Technology (IET)
Pages	111 - 115
ISBN (Print)	0852967535
DOIs	https://doi.org/10.1049/cp:20030229
Publication status	Published - Apr 2003
Event	5th European Personal Mobile Communications Conference - Strathclyde, United Kingdom Duration: 1 Apr 2003 → …

Conference

Conference	5th European Personal Mobile Communications Conference
Country/Territory	United Kingdom
City	Strathclyde
Period	1/04/03 → …

Bibliographical note

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

Keywords

OFDM modulation
channel estimation
wireless LAN

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10.1049/cp:20030229

http://hdl.handle.net/1983/836

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@inproceedings{f4bd5d56a6214e01962e81181858914a,

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

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",

keywords = "OFDM modulation, channel estimation, wireless LAN",

author = "A Doufexi and SMD Armour and AR Nix and MA Beach",

note = "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; 5th European Personal Mobile Communications Conference ; Conference date: 01-04-2003",

year = "2003",

month = apr,

doi = "10.1049/cp:20030229",

language = "English",

isbn = "0852967535",

pages = "111 -- 115",

booktitle = "5th European Personal Mobile Communications Conference, Glasgow",

publisher = "Institution of Engineering and Technology (IET)",

address = "United Kingdom",

}

Doufexi, A , Armour, SMD, Nix, AR & Beach, MA 2003, Throughput enhancement of OFDM based WLANs using space time block codes and time domain least squares channel estimation. in 5th European Personal Mobile Communications Conference, Glasgow. Institution of Engineering and Technology (IET), pp. 111 - 115, 5th European Personal Mobile Communications Conference, Strathclyde, United Kingdom, 1/04/03. https://doi.org/10.1049/cp:20030229

Throughput enhancement of OFDM based WLANs using space time block codes and time domain least squares channel estimation. / Doufexi, A ; Armour, SMD; Nix, AR et al.
5th European Personal Mobile Communications Conference, Glasgow. Institution of Engineering and Technology (IET), 2003. p. 111 - 115.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Throughput enhancement of OFDM based WLANs using space time block codes and time domain least squares channel estimation

AU - Doufexi, A

AU - Armour, SMD

AU - Nix, AR

AU - Beach, MA

N1 - 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

PY - 2003/4

Y1 - 2003/4

N2 - 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

AB - 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

KW - OFDM modulation

KW - channel estimation

KW - wireless LAN

U2 - 10.1049/cp:20030229

DO - 10.1049/cp:20030229

M3 - Conference Contribution (Conference Proceeding)

SN - 0852967535

SP - 111

EP - 115

BT - 5th European Personal Mobile Communications Conference, Glasgow

PB - Institution of Engineering and Technology (IET)

T2 - 5th European Personal Mobile Communications Conference

Y2 - 1 April 2003

ER -

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

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Keywords

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