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  • Letter to the Editor
  • Open Access

Correction to "Optimally Joint Subcarrier Matching and Power Allocation in OFDM Multihop System"

EURASIP Journal on Advances in Signal Processing20102010:126230

  • Received: 22 June 2010
  • Accepted: 1 August 2010
  • Published:


  • Information Technology
  • Quantum Information
  • Power Allocation
  • Optimally Joint
  • Multihop System
In the above paper [1], the author gives that is always greater than 0 as in [1]. However, should be

where . It is observed that the denominators of (1) and in [1] are the same and positive whereas the numerators are different. From (1), it cannot be assured that is always greater than for example, when , . Therefore, the total channel capacity is not always monotonically increasing function of for the given power allocation, and and in [1] cannot be obtained. Meanwhile, the extended proposition in [1, Section ] does not stand.

Authors’ Affiliations

National University of Defense Technology, Changsha, 410071, China


  1. Wang W, Yan S, Yang S: Optimally joint subcarrier matching and power allocation in OFDM multihop system. EURASIP Journal on Advances in Signal Processing 2008, 2008:-8.Google Scholar


© Lijie Wang et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.