BAD: Bidirectional arbitrated decision-feedback equalization

J. K. Nelson; A. C. Singer; U. Madhow; C. S. McGahey

doi:10.1109/TCOMM.2004.841980

BAD: Bidirectional arbitrated decision-feedback equalization

J. K. Nelson, A. C. Singer, U. Madhow, C. S. McGahey

Research output: Contribution to journal › Article › peer-review

Abstract

The bidirectional arbitrated decision-feedback equalizer (BAD), which has bit-error rate performance between a decision-feedback equalizer (DFE) and maximum a posteriori (MAP) detection, is presented. The computational complexity of the BAD algorithm is linear in the channel length, which is the same as that of the DFE, and significantly lower than the exponential complexity of the MAP detector. While the relative performance of BAD to those of the DFE and the MAP detector depends on the specific channel model, for an error probability of 10^-2, the performance of BAD is typically 1-2 dB better than that of the DFE, and within 1 dB of the performance of MAP detection.

Original language	English (US)
Pages (from-to)	214-218
Number of pages	5
Journal	IEEE Transactions on Communications
Volume	53
Issue number	2
DOIs	https://doi.org/10.1109/TCOMM.2004.841980
State	Published - Feb 2005

Keywords

Arbiter
Decision-feedback equalizers (DFEs)
Digital communications
Equalizers
Multipath channels
Time-reversal diversity

ASJC Scopus subject areas

Electrical and Electronic Engineering

Online availability

10.1109/TCOMM.2004.841980

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title = "BAD: Bidirectional arbitrated decision-feedback equalization",

abstract = "The bidirectional arbitrated decision-feedback equalizer (BAD), which has bit-error rate performance between a decision-feedback equalizer (DFE) and maximum a posteriori (MAP) detection, is presented. The computational complexity of the BAD algorithm is linear in the channel length, which is the same as that of the DFE, and significantly lower than the exponential complexity of the MAP detector. While the relative performance of BAD to those of the DFE and the MAP detector depends on the specific channel model, for an error probability of 10-2, the performance of BAD is typically 1-2 dB better than that of the DFE, and within 1 dB of the performance of MAP detection.",

keywords = "Arbiter, Decision-feedback equalizers (DFEs), Digital communications, Equalizers, Multipath channels, Time-reversal diversity",

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note = "Funding Information: Paper approved by R. A. Kennedy, the Editor for Data Communications Modulation and Signal Design of the IEEE Communications Society. Manuscript received August 29, 2001; revised March 25, 2003. This work was supported in part by the National Science Foundation under Grants NCR96-24008 (CAREER), CCR-0092598 (CAREER), CCR99-79381, ITR00-85929, and ITR02-20118, in part by the Army Research Office under Grant DAAD19-00-1-0567, in part by by the Office of Naval Research under Grant N00014-01-1-0117, and in part by the Motorola Center for Communications. This paper was presented in part at the 34th Conference on Information Science and Systems, Princeton, NJ, March 2000.",

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N1 - Funding Information: Paper approved by R. A. Kennedy, the Editor for Data Communications Modulation and Signal Design of the IEEE Communications Society. Manuscript received August 29, 2001; revised March 25, 2003. This work was supported in part by the National Science Foundation under Grants NCR96-24008 (CAREER), CCR-0092598 (CAREER), CCR99-79381, ITR00-85929, and ITR02-20118, in part by the Army Research Office under Grant DAAD19-00-1-0567, in part by by the Office of Naval Research under Grant N00014-01-1-0117, and in part by the Motorola Center for Communications. This paper was presented in part at the 34th Conference on Information Science and Systems, Princeton, NJ, March 2000.

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N2 - The bidirectional arbitrated decision-feedback equalizer (BAD), which has bit-error rate performance between a decision-feedback equalizer (DFE) and maximum a posteriori (MAP) detection, is presented. The computational complexity of the BAD algorithm is linear in the channel length, which is the same as that of the DFE, and significantly lower than the exponential complexity of the MAP detector. While the relative performance of BAD to those of the DFE and the MAP detector depends on the specific channel model, for an error probability of 10-2, the performance of BAD is typically 1-2 dB better than that of the DFE, and within 1 dB of the performance of MAP detection.

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BAD: Bidirectional arbitrated decision-feedback equalization

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