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Joint signaling strategies for approaching the capacity of twisted-pair channels

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Title: Joint signaling strategies for approaching the capacity of twisted-pair channels
Author: Sendonaris, Andrew; Veeravalli, Venugopal V.; Aazhang, Behnaam
Type: Journal Paper
Keywords: capacity; crosstalk; digital subscriber loops; multicarrier modulation; twisted-pair channel
Citation: A. Sendonaris, V. V. Veeravalli and B. Aazhang, "Joint signaling strategies for approaching the capacity of twisted-pair channels," IEEE Transactions on Communications, vol. 46, pp. 673-685, 1998.
Abstract: A technique is presented for jointly optimizing the signaling in the two directions of transmission on a twisted-pair communications channel. It is then applied to twisted-pair channel models with monotonic channel response and crosstalk transfer functions. While the signaling strategy presented in this paper can achieve only a lower bound on the true channel capacity, it is a significant improvement over existing signaling schemes. In particular, in contrast with existing schemes, the maximum information rate for the joint signaling strategy increases without bound as the signal-to-noise ratio (SNR) approaches infinity. It is also shown through numerical results that the proposed signaling strategy generalizes naturally to more practical nonmonotonic twisted-pair channel models incorporating bridge taps and other nonidealities. Finally, the form of the optimal signaling strategy suggests a relatively straightforward implementation using multicarrier modulation.
Date Published: 1998-10-20

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  • ECE Publications [1082 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • CMC Publications [275 items]
    Publications by Rice Faculty and graduate students in multimedia communications