A low-complexity lattice-based low-PAR transmission scheme for DSL channels

Collings, I. B. and Clarkson, I. V. L. (2004) A low-complexity lattice-based low-PAR transmission scheme for DSL channels. Ieee Transactions on Communications, 52 5: 755-764.


Author Collings, I. B.
Clarkson, I. V. L.
Title A low-complexity lattice-based low-PAR transmission scheme for DSL channels
Journal name Ieee Transactions on Communications   Check publisher's open access policy
ISSN 0090-6778
Publication date 2004
Sub-type Article (original research)
DOI 10.1109/TCOMM.2004.826261
Volume 52
Issue 5
Start page 755
End page 764
Total pages 10
Editor E. Ayanoglu
Place of publication Piscataway
Publisher Institute of Electrical and Electronics Engineers
Collection year 2004
Language eng
Subject C1
280204 Signal Processing
700302 Telecommunications
Abstract This paper presents a new low-complexity multicarrier modulation (MCM) technique based on lattices which achieves a peak-to-average power ratio (PAR) as low as three. The scheme can be viewed as a drop in replacement for the discrete multitone (DMT) modulation of an asymmetric digital subscriber line modem. We show that the lattice-MCM retains many of the attractive features of sinusoidal-MCM, and does so with lower implementation complexity, O(N), compared with DMT, which requires O(N log N) operations. We also present techniques for narrowband interference rejection and power profiling. Simulation studies confirm that performance of the lattice-MCM is superior, even compared with recent techniques for PAR reduction in DMT.
Keyword Computer Science, Information Systems
Engineering, Electrical & Electronic
Telecommunications
Digital Subscriber Line (dsl)
Lattice Codes
Multicarrier Modulation (mcm)
Peak-to-average Ratio (par)
Average Power Ratio
Multicarrier Modulation
Peak
Ofdm
Sequences
Q-Index Code C1
Additional Notes This paper represents the first major success in an ongoing collaboration with Iain Collings, then at The University of Sydney, now CSIRO. The key technology in this paper is also the subject of an international patent. IEEE Transactions on Communications is in the Top 10 (#8) highest impact-factor journals in the field of telecommunications, as reported by ISI Web of Knowledge. It has already been cited by another IEEE Trans. Commun. paper (January, 2006).

 
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