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Spectral Compensation for Multicarrier Communication

Författare:
Publiceringsår: 2007
Språk: Engelska
Sidor: 3366-3379
Publikation/Tidskrift/Serie: IEEE Transactions on Signal Processing
Volym: 55
Nummer: 7
Dokumenttyp: Artikel
Förlag: IEEE

Sammanfattning

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.

Disputation

Nyckelord

  • Technology and Engineering
  • multicarrier modulation
  • (PSD) constraint
  • power spectral density
  • spectral shaping

Övriga

Published
Yes
  • ISSN: 1053-587X

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