Skip to main content

A Dynamic Region based Limited Feedback Scheme for Efficient Power Allocation in OFDM Systems

Wang, Jun-Bo, Su, Qin, Wang, Jiangzhou, Chen, Ming, Song, Xiaoyu (2013) A Dynamic Region based Limited Feedback Scheme for Efficient Power Allocation in OFDM Systems. IEEE Communications Letters, 17 (11). pp. 2036-2039. ISSN 1089-7798. (doi:10.1109/LCOMM.2013.092313.131017) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:37153)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL
http://dx.doi.org/10.1109/LCOMM.2013.092313.131017

Abstract

This letter proposes a dynamic region based limited feedback scheme for efficient power allocation in orthogonal frequency division multiplexing (OFDM) systems. At the receiver, after obtaining the channel gains of all subcarriers by channel estimation, the maximum and the minimum channel gains can be determined easily. Using the maximum and the minimum channel gains, the proposed scheme divides the range of the channel gains into multiple regions adaptively. Each region is assigned with a unique index. Then each subcarrier will be allocated with the index of the region that its channel gain belongs to. The index information of all subcarriers can be denoted by a code from a predetermined codebook. Along with the maximum and the minimum channel gains, only the codes will be fed back. The feedback information will be used to estimate the channel gains of all subcarriers at the transmitter. The simulation results show that the proposed scheme can improve both the accuracy of feedback channel gain information and the spectral efficiency with less feedback information overhead.

Item Type: Article
DOI/Identification number: 10.1109/LCOMM.2013.092313.131017
Uncontrolled keywords: Limited feedback channel gains orthogonal frequency division multiplexing (OFDM) power allocation Channel estimation Educational institutions Indexes Interpolation OFDM Resource management Transmitters
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Tina Thompson
Date Deposited: 03 Dec 2013 11:35 UTC
Last Modified: 16 Nov 2021 10:13 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/37153 (The current URI for this page, for reference purposes)
Wang, Jiangzhou: https://orcid.org/0000-0003-0881-3594
  • Depositors only (login required):