The performance of robust adaptive modulation over wireless channels with non reciprocal interference

RA Cepeda Lopez; MP Fitton; AR Nix

doi:10.1109/VTC.2002.1002866

The performance of robust adaptive modulation over wireless channels with non reciprocal interference

RA Cepeda Lopez, MP Fitton, AR Nix

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

5 Citations (Scopus)

488 Downloads (Pure)

Abstract

Adapting a modem's modulation scheme can significantly enhance the resulting performance over a wireless communications link. Non-adaptive modems are generally designed conservatively for worst-case channel conditions. Adaptive modems are able to exploit the higher channel capacity when good conditions are encountered. A number of different metrics can be used to drive the adaptation process (i.e. automatic repeat request (ARQ) or segment error rate (SER)). Not surprisingly, certain metrics are far more successful than others. This paper presents an investigation of adaptive modulation in the presence of interference. In particular, the case of non reciprocal interference is studied (i.e., cases where the level of interference is different on the forward and reverse links). Research results have shown that if adaptation is performed assuming a reciprocal channel, then poor performance will result for the link experiencing a higher level of interference. In this study, an algorithm is used to calculate a measure of the link quality. This value is then fed back to the other end of the link to adapt subsequent transmissions. Results indicate that the throughput of such a system can be considerably improved when transmitting adaptively using any one of DBPSK, DQPSK or 8DPSK modulation schemes. It is proposed that this simple approach be adopted for short range, ad hoc, wireless personal area networks (WPAN)

Translated title of the contribution	The performance of robust adaptive modulation over wireless channels with non reciprocal interference
Original language	English
Title of host publication	IEEE 55th Vehicular Technology Conference, 2002 (VTC Spring 2002)
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1497 - 1501
Number of pages	5
Volume	3
ISBN (Print)	0780374843
DOIs	https://doi.org/10.1109/VTC.2002.1002866
Publication status	Published - May 2002
Event	55th Vehicular Technology Conference 2002 (VTC 2002-Spring) - Birmingham, Ala., United States Duration: 1 May 2002 → …

Conference

Conference	55th Vehicular Technology Conference 2002 (VTC 2002-Spring)
Country/Territory	United States
City	Birmingham, Ala.
Period	1/05/02 → …

Bibliographical note

Rose publication type: Conference contribution

Sponsorship: The authors gratefully acknowledge the directors of Toshiba Research Europe Limited, Telecommunications Research Laboratory for their support and the permission to publish this work

Terms of use: Copyright © 2002 IEEE. Reprinted from Proceedings of IEEE 55th Vehicular Technology Conference, Spring-2002. 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 [email protected].

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

Contributor (Other): Institute of Electrical and Electronics Engineers (IEEE)

Access to Document

10.1109/VTC.2002.1002866

Cepeda IEEE VTC Spring2002Accepted author manuscript, 208 KB

http://hdl.handle.net/1983/145

Handle.net

Persistent link

Cite this

@inproceedings{a91c6fc97a574dfe994c5d4be8130018,

title = "The performance of robust adaptive modulation over wireless channels with non reciprocal interference",

abstract = "Adapting a modem's modulation scheme can significantly enhance the resulting performance over a wireless communications link. Non-adaptive modems are generally designed conservatively for worst-case channel conditions. Adaptive modems are able to exploit the higher channel capacity when good conditions are encountered. A number of different metrics can be used to drive the adaptation process (i.e. automatic repeat request (ARQ) or segment error rate (SER)). Not surprisingly, certain metrics are far more successful than others. This paper presents an investigation of adaptive modulation in the presence of interference. In particular, the case of non reciprocal interference is studied (i.e., cases where the level of interference is different on the forward and reverse links). Research results have shown that if adaptation is performed assuming a reciprocal channel, then poor performance will result for the link experiencing a higher level of interference. In this study, an algorithm is used to calculate a measure of the link quality. This value is then fed back to the other end of the link to adapt subsequent transmissions. Results indicate that the throughput of such a system can be considerably improved when transmitting adaptively using any one of DBPSK, DQPSK or 8DPSK modulation schemes. It is proposed that this simple approach be adopted for short range, ad hoc, wireless personal area networks (WPAN)",

author = "{Cepeda Lopez}, RA and MP Fitton and AR Nix",

note = "Rose publication type: Conference contribution Sponsorship: The authors gratefully acknowledge the directors of Toshiba Research Europe Limited, Telecommunications Research Laboratory for their support and the permission to publish this work Terms of use: Copyright {\textcopyright} 2002 IEEE. Reprinted from Proceedings of IEEE 55th Vehicular Technology Conference, Spring-2002. 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 [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it Contributor (Other): Institute of Electrical and Electronics Engineers (IEEE); 55th Vehicular Technology Conference 2002 (VTC 2002-Spring) ; Conference date: 01-05-2002",

year = "2002",

month = may,

doi = "10.1109/VTC.2002.1002866",

language = "English",

isbn = "0780374843",

volume = "3",

pages = "1497 -- 1501",

booktitle = "IEEE 55th Vehicular Technology Conference, 2002 (VTC Spring 2002)",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

}

Cepeda Lopez, RA, Fitton, MP & Nix, AR 2002, The performance of robust adaptive modulation over wireless channels with non reciprocal interference. in IEEE 55th Vehicular Technology Conference, 2002 (VTC Spring 2002). vol. 3, Institute of Electrical and Electronics Engineers (IEEE), pp. 1497 - 1501, 55th Vehicular Technology Conference 2002 (VTC 2002-Spring), Birmingham, Ala., United States, 1/05/02. https://doi.org/10.1109/VTC.2002.1002866

The performance of robust adaptive modulation over wireless channels with non reciprocal interference. / Cepeda Lopez, RA; Fitton, MP; Nix, AR.
IEEE 55th Vehicular Technology Conference, 2002 (VTC Spring 2002). Vol. 3 Institute of Electrical and Electronics Engineers (IEEE), 2002. p. 1497 - 1501.

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

TY - GEN

T1 - The performance of robust adaptive modulation over wireless channels with non reciprocal interference

AU - Cepeda Lopez, RA

AU - Fitton, MP

AU - Nix, AR

N1 - Rose publication type: Conference contribution Sponsorship: The authors gratefully acknowledge the directors of Toshiba Research Europe Limited, Telecommunications Research Laboratory for their support and the permission to publish this work Terms of use: Copyright © 2002 IEEE. Reprinted from Proceedings of IEEE 55th Vehicular Technology Conference, Spring-2002. 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 [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it Contributor (Other): Institute of Electrical and Electronics Engineers (IEEE)

PY - 2002/5

Y1 - 2002/5

N2 - Adapting a modem's modulation scheme can significantly enhance the resulting performance over a wireless communications link. Non-adaptive modems are generally designed conservatively for worst-case channel conditions. Adaptive modems are able to exploit the higher channel capacity when good conditions are encountered. A number of different metrics can be used to drive the adaptation process (i.e. automatic repeat request (ARQ) or segment error rate (SER)). Not surprisingly, certain metrics are far more successful than others. This paper presents an investigation of adaptive modulation in the presence of interference. In particular, the case of non reciprocal interference is studied (i.e., cases where the level of interference is different on the forward and reverse links). Research results have shown that if adaptation is performed assuming a reciprocal channel, then poor performance will result for the link experiencing a higher level of interference. In this study, an algorithm is used to calculate a measure of the link quality. This value is then fed back to the other end of the link to adapt subsequent transmissions. Results indicate that the throughput of such a system can be considerably improved when transmitting adaptively using any one of DBPSK, DQPSK or 8DPSK modulation schemes. It is proposed that this simple approach be adopted for short range, ad hoc, wireless personal area networks (WPAN)

AB - Adapting a modem's modulation scheme can significantly enhance the resulting performance over a wireless communications link. Non-adaptive modems are generally designed conservatively for worst-case channel conditions. Adaptive modems are able to exploit the higher channel capacity when good conditions are encountered. A number of different metrics can be used to drive the adaptation process (i.e. automatic repeat request (ARQ) or segment error rate (SER)). Not surprisingly, certain metrics are far more successful than others. This paper presents an investigation of adaptive modulation in the presence of interference. In particular, the case of non reciprocal interference is studied (i.e., cases where the level of interference is different on the forward and reverse links). Research results have shown that if adaptation is performed assuming a reciprocal channel, then poor performance will result for the link experiencing a higher level of interference. In this study, an algorithm is used to calculate a measure of the link quality. This value is then fed back to the other end of the link to adapt subsequent transmissions. Results indicate that the throughput of such a system can be considerably improved when transmitting adaptively using any one of DBPSK, DQPSK or 8DPSK modulation schemes. It is proposed that this simple approach be adopted for short range, ad hoc, wireless personal area networks (WPAN)

U2 - 10.1109/VTC.2002.1002866

DO - 10.1109/VTC.2002.1002866

M3 - Conference Contribution (Conference Proceeding)

SN - 0780374843

VL - 3

SP - 1497

EP - 1501

BT - IEEE 55th Vehicular Technology Conference, 2002 (VTC Spring 2002)

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 55th Vehicular Technology Conference 2002 (VTC 2002-Spring)

Y2 - 1 May 2002

ER -

The performance of robust adaptive modulation over wireless channels with non reciprocal interference

Abstract

Conference

Bibliographical note

Access to Document

Handle.net

Fingerprint

Cite this