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Spectral Compensation for Multicarrier Communication

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Author

  • Thomas Magesacher

Summary, in English

Spectral compensation is an information-processing technique applied in the transmitter to improve the spectral efficiency of multicarrier modulation under a given power spectral density constraint. A set of carefully chosen tones, the so-called information tones, carries data. The. remaining tones, referred to as compensation tones, are modulated with a linear combination of the data, such that the spectral characteristic of the transmit signal and thus the throughput are improved. This paper investigates strategies to find the set of compensation tones and presents the optimal solution for the linear combination of the data given the tone-set split. The optimality criterion is maximization of throughput for a time-dispersive Gaussian channel known to the transmitter. Furthermore, a. suboptimal design is proposed, which has low runtime-complexity and achieves near-optimal performance.

Publishing year

2007

Language

English

Pages

3366-3379

Publication/Series

IEEE Transactions on Signal Processing

Volume

55

Issue

7

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • multicarrier modulation
  • (PSD) constraint
  • power spectral density
  • spectral shaping

Status

Published

ISBN/ISSN/Other

  • ISSN: 1053-587X