Performance analysis of a pre-FFT equalizer design for DVB-T

SMD Armour; AR Nix; David Bull

doi:10.1109/30.793539

Performance analysis of a pre-FFT equalizer design for DVB-T

SMD Armour, AR Nix, David Bull

Research output: Contribution to journal › Article (Academic Journal) › peer-review

16 Citations (Scopus)

237 Downloads (Pure)

Abstract

Conventional OFDM systems employ a guard interval to combat delay spread distortion of the transmitted data. This reduces the efficiency of the OFDM transmission. A combined OFDM-equalization reception strategy is presented in this paper. This strategy employs an adaptive equalizer to combat delay spread distortion instead of a guard interval. This facilitates the use of very short guard intervals and thus the transmission efficiency of the OFDM modulation scheme is improved. This paper presents the combined OFDM-equalization receiver and the pre-FFT equalizer designs. The efficiency of both the conventional OFDM and combined OFDM-equalization strategies is considered and it is demonstrated that combined OFDM-equalization offers a significant improvement in transmission efficiency. The transmission of OFDM signals in single frequency networks is considered and it is shown that the combined OFDM-equalization technique is particularly effective for such applications, offering an improvement in bandwidth efficiency of 14% under severe delay spread conditions. The limitations of the combined OFDM-equalization strategy to operate effectively under both additive noise and time variant conditions are considered. The performance is simulated and the sensitivity to this impairment analyzed.

Original language	English
Pages (from-to)	544 - 552
Journal	IEEE Transactions on Consumer Electronics
Volume	45
Issue number	3
DOIs	https://doi.org/10.1109/30.793539
Publication status	Published - Nov 1999

Bibliographical note

Terms of use: Copyright © 1999 IEEE. Reprinted from IEEE Transactions on Consumer Electronics. 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 pubs-permissions@ieee.org.

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

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Keywords

OFDM modulation
digital video broadcasting
adaptive equalisers

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Armour IEEE ConsElec Aug1999Accepted author manuscript, 475 KB

http://hdl.handle.net/1983/203

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title = "Performance analysis of a pre-FFT equalizer design for DVB-T",

abstract = "Conventional OFDM systems employ a guard interval to combat delay spread distortion of the transmitted data. This reduces the efficiency of the OFDM transmission. A combined OFDM-equalization reception strategy is presented in this paper. This strategy employs an adaptive equalizer to combat delay spread distortion instead of a guard interval. This facilitates the use of very short guard intervals and thus the transmission efficiency of the OFDM modulation scheme is improved. This paper presents the combined OFDM-equalization receiver and the pre-FFT equalizer designs. The efficiency of both the conventional OFDM and combined OFDM-equalization strategies is considered and it is demonstrated that combined OFDM-equalization offers a significant improvement in transmission efficiency. The transmission of OFDM signals in single frequency networks is considered and it is shown that the combined OFDM-equalization technique is particularly effective for such applications, offering an improvement in bandwidth efficiency of 14% under severe delay spread conditions. The limitations of the combined OFDM-equalization strategy to operate effectively under both additive noise and time variant conditions are considered. The performance is simulated and the sensitivity to this impairment analyzed.",

keywords = "OFDM modulation, digital video broadcasting, adaptive equalisers",

author = "SMD Armour and AR Nix and David Bull",

note = "Terms of use: Copyright {\textcopyright} 1999 IEEE. Reprinted from IEEE Transactions on Consumer Electronics. 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 pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. Publisher: Institute of Electrical and Electronics Engineers (IEEE)",

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T1 - Performance analysis of a pre-FFT equalizer design for DVB-T

AU - Armour, SMD

AU - Nix, AR

AU - Bull, David

N1 - Terms of use: Copyright © 1999 IEEE. Reprinted from IEEE Transactions on Consumer Electronics. 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 pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. Publisher: Institute of Electrical and Electronics Engineers (IEEE)

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Y1 - 1999/11

N2 - Conventional OFDM systems employ a guard interval to combat delay spread distortion of the transmitted data. This reduces the efficiency of the OFDM transmission. A combined OFDM-equalization reception strategy is presented in this paper. This strategy employs an adaptive equalizer to combat delay spread distortion instead of a guard interval. This facilitates the use of very short guard intervals and thus the transmission efficiency of the OFDM modulation scheme is improved. This paper presents the combined OFDM-equalization receiver and the pre-FFT equalizer designs. The efficiency of both the conventional OFDM and combined OFDM-equalization strategies is considered and it is demonstrated that combined OFDM-equalization offers a significant improvement in transmission efficiency. The transmission of OFDM signals in single frequency networks is considered and it is shown that the combined OFDM-equalization technique is particularly effective for such applications, offering an improvement in bandwidth efficiency of 14% under severe delay spread conditions. The limitations of the combined OFDM-equalization strategy to operate effectively under both additive noise and time variant conditions are considered. The performance is simulated and the sensitivity to this impairment analyzed.

AB - Conventional OFDM systems employ a guard interval to combat delay spread distortion of the transmitted data. This reduces the efficiency of the OFDM transmission. A combined OFDM-equalization reception strategy is presented in this paper. This strategy employs an adaptive equalizer to combat delay spread distortion instead of a guard interval. This facilitates the use of very short guard intervals and thus the transmission efficiency of the OFDM modulation scheme is improved. This paper presents the combined OFDM-equalization receiver and the pre-FFT equalizer designs. The efficiency of both the conventional OFDM and combined OFDM-equalization strategies is considered and it is demonstrated that combined OFDM-equalization offers a significant improvement in transmission efficiency. The transmission of OFDM signals in single frequency networks is considered and it is shown that the combined OFDM-equalization technique is particularly effective for such applications, offering an improvement in bandwidth efficiency of 14% under severe delay spread conditions. The limitations of the combined OFDM-equalization strategy to operate effectively under both additive noise and time variant conditions are considered. The performance is simulated and the sensitivity to this impairment analyzed.

KW - OFDM modulation

KW - digital video broadcasting

KW - adaptive equalisers

U2 - 10.1109/30.793539

DO - 10.1109/30.793539

M3 - Article (Academic Journal)

VL - 45

SP - 544

EP - 552

JO - IEEE Transactions on Consumer Electronics

JF - IEEE Transactions on Consumer Electronics

SN - 0098-3063

IS - 3

ER -

Performance analysis of a pre-FFT equalizer design for DVB-T

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