- Title
- A subband approach to channel estimation and equalization for DMT and OFDM systems
- Creator
- Marelli, Damian Edgardo; Fu, Minyue
- Relation
- IEEE Transactions on Communications Vol. 53, Issue 11, p. 1850-1858
- Publisher Link
- http://dx.doi.org/10.1109/TCOMM.2005.858671
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2005
- Description
- Cyclic prefix (CP) is commonly used for channel equalization of discrete multitone (DMT) and orthogonal frequency-division multiplexing (OFDM) systems. This is often done in conjunction with a time-domain equalizer (TEQ) for reducing the capacity overhead caused by the CP. However, the use of TEQ greatly increases the computational cost, and is unable to eliminate the need for the CP. In this paper, we propose a subband approach to channel estimation and channel equalization for DMT and OFDM systems. This approach involves splitting the received signals into a number of frequency bands (called subbands), and estimating a constant parameter in each subband. The subband approach is conceptually simple, requires no CP, is much more numerically efficient than the TEQ method, and gives compatible or better estimation errors than the CP-based methods.
- Subject
- discrete multitone (DMT); equalization multicarrier; orthogonal frequency-division multiplexing (OFDM); subband adaptive filtering; time-domain equalizer (TEQ)
- Identifier
- uon:776
- Identifier
- http://hdl.handle.net/1959.13/26036
- Identifier
- ISSN:0090-6778
- Rights
- Copyright © 2005 IEEE. Reprinted from IEEE Transactions on Communications. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
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