Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems

Suvra S. Das; Muhammad Imadur Rahman; Yuanye Wang; Flemming Bjerge Frederiksen; Ramjee Prasad

doi:10.1109/VETECF.2007.381

Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems

Suvra S. Das, Muhammad Imadur Rahman, Yuanye Wang, Flemming Bjerge Frederiksen, Ramjee Prasad

Department of Electronic Systems

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

3 Citations (Scopus)

Abstract

In orthogonal frequency division multiplexing (OFDM) systems, there are several degrees of freedom in time and frequency domain, such as, sub-band size, forward error control coding (FEC) rate, modulation order, power level, modulation adaptation interval, coding rate adaptation interval and power adaptation interval, which can be exploited for link adaptation to achieve high spectral efficiency. The variable channel parameters such as delay spread, Doppler frequency spread, average signal to noise ratio and instantaneous channel gains influence the
link adaptation parameters. Optimal adaptation of the link parameters based on the channel conditions would lead to
highly complex systems with high overhead. Hybrid strategies to vary the adaptation rates to tradeoff achievable efficiency and complexity are presented in this work.

Original language	English
Title of host publication	IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.
Number of pages	5
Publisher	Electrical Engineering/Electronics, Computer, Communications and Information Technology Association
Publication date	2007
Pages	1807-1811
ISBN (Print)	978-1-4244-0263-2
DOIs	https://doi.org/10.1109/VETECF.2007.381
Publication status	Published - 2007
Event	2007 IEEE 66th Vehicular Technology Conference: VTC-2007 Fall - Baltimore, MD, United States Duration: 30 Sept 2007 → 3 Oct 2007 Conference number: 66

Conference

Conference	2007 IEEE 66th Vehicular Technology Conference
Number	66
Country/Territory	United States
City	Baltimore, MD
Period	30/09/2007 → 03/10/2007

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10.1109/VETECF.2007.381

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Das, S. S., Rahman, M. I., Wang, Y., Frederiksen, F. B., & Prasad, R. (2007). Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems. In IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring. (pp. 1807-1811). Electrical Engineering/Electronics, Computer, Communications and Information Technology Association. https://doi.org/10.1109/VETECF.2007.381

Das, Suvra S. ; Rahman, Muhammad Imadur ; Wang, Yuanye et al. / Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems. IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.. Electrical Engineering/Electronics, Computer, Communications and Information Technology Association, 2007. pp. 1807-1811

@inproceedings{7abfaa40ad8111dcaf3b000ea68e967b,

title = "Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems",

abstract = "In orthogonal frequency division multiplexing (OFDM) systems, there are several degrees of freedom in time and frequency domain, such as, sub-band size, forward error control coding (FEC) rate, modulation order, power level, modulation adaptation interval, coding rate adaptation interval and power adaptation interval, which can be exploited for link adaptation to achieve high spectral efficiency. The variable channel parameters such as delay spread, Doppler frequency spread, average signal to noise ratio and instantaneous channel gains influence thelink adaptation parameters. Optimal adaptation of the link parameters based on the channel conditions would lead tohighly complex systems with high overhead. Hybrid strategies to vary the adaptation rates to tradeoff achievable efficiency and complexity are presented in this work.",

author = "Das, {Suvra S.} and Rahman, {Muhammad Imadur} and Yuanye Wang and Frederiksen, {Flemming Bjerge} and Ramjee Prasad",

year = "2007",

doi = "10.1109/VETECF.2007.381",

language = "English",

isbn = "978-1-4244-0263-2",

pages = "1807--1811",

booktitle = " IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.",

publisher = "Electrical Engineering/Electronics, Computer, Communications and Information Technology Association",

note = "2007 IEEE 66th Vehicular Technology Conference ; Conference date: 30-09-2007 Through 03-10-2007",

}

Das, SS, Rahman, MI, Wang, Y, Frederiksen, FB & Prasad, R 2007, Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems. in IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.. Electrical Engineering/Electronics, Computer, Communications and Information Technology Association, pp. 1807-1811, 2007 IEEE 66th Vehicular Technology Conference, Baltimore, MD, United States, 30/09/2007. https://doi.org/10.1109/VETECF.2007.381

Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems. / Das, Suvra S.; Rahman, Muhammad Imadur; Wang, Yuanye et al.
IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.. Electrical Engineering/Electronics, Computer, Communications and Information Technology Association, 2007. p. 1807-1811.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems

AU - Das, Suvra S.

AU - Rahman, Muhammad Imadur

AU - Wang, Yuanye

AU - Frederiksen, Flemming Bjerge

AU - Prasad, Ramjee

N1 - Conference code: 66

PY - 2007

Y1 - 2007

N2 - In orthogonal frequency division multiplexing (OFDM) systems, there are several degrees of freedom in time and frequency domain, such as, sub-band size, forward error control coding (FEC) rate, modulation order, power level, modulation adaptation interval, coding rate adaptation interval and power adaptation interval, which can be exploited for link adaptation to achieve high spectral efficiency. The variable channel parameters such as delay spread, Doppler frequency spread, average signal to noise ratio and instantaneous channel gains influence thelink adaptation parameters. Optimal adaptation of the link parameters based on the channel conditions would lead tohighly complex systems with high overhead. Hybrid strategies to vary the adaptation rates to tradeoff achievable efficiency and complexity are presented in this work.

AB - In orthogonal frequency division multiplexing (OFDM) systems, there are several degrees of freedom in time and frequency domain, such as, sub-band size, forward error control coding (FEC) rate, modulation order, power level, modulation adaptation interval, coding rate adaptation interval and power adaptation interval, which can be exploited for link adaptation to achieve high spectral efficiency. The variable channel parameters such as delay spread, Doppler frequency spread, average signal to noise ratio and instantaneous channel gains influence thelink adaptation parameters. Optimal adaptation of the link parameters based on the channel conditions would lead tohighly complex systems with high overhead. Hybrid strategies to vary the adaptation rates to tradeoff achievable efficiency and complexity are presented in this work.

U2 - 10.1109/VETECF.2007.381

DO - 10.1109/VETECF.2007.381

M3 - Article in proceeding

SN - 978-1-4244-0263-2

SP - 1807

EP - 1811

BT - IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.

PB - Electrical Engineering/Electronics, Computer, Communications and Information Technology Association

T2 - 2007 IEEE 66th Vehicular Technology Conference

Y2 - 30 September 2007 through 3 October 2007

ER -

Das SS, Rahman MI, Wang Y, Frederiksen FB, Prasad R. Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems. In IEEE 65th Vehicular Technology Conference, 2007. VTC2007-Spring.. Electrical Engineering/Electronics, Computer, Communications and Information Technology Association. 2007. p. 1807-1811 doi: 10.1109/VETECF.2007.381

Hybrid Strategies for Link Adaptation Exploiting Several Degrees of Freedom in OFDM Based Broadband Wireless Systems

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