Enhanced channel-estimation technique for MIMO-OFDM systems

Myeongchoel Shin, Hakju Lee, Chungyong Lee

Research output: Contribution to journalLetter

60 Citations (Scopus)

Abstract

In multi-input-multi-output orthogonal frequency-division multiplexing systems, conventional channel-estimation techniques using comb-type training symbols give relatively large mean squared errors (MSEs) at the edge subcarriers. To reduce the MSEs at these subcarriers, a cyclic comb-type training structure is proposed. In the proposed cyclic training structure, all types of training symbols are transmitted cyclically at each antenna. At the receiver, the channel frequency responses that are estimated using each training symbol are averaged with weights obtained from the corresponding MSEs. Computer simulations showed that the proposed cyclic training structure gives more signal-to-noise ratio gain than the conventional training structure.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume53
Issue number1
DOIs
Publication statusPublished - 2004 Jan 1

Fingerprint

MIMO-OFDM
Channel Estimation
Channel estimation
MIMO systems
Orthogonal frequency division multiplexing
Mean Squared Error
Frequency response
Signal to noise ratio
Antennas
Computer simulation
Frequency Response
Training
Orthogonal Frequency Division multiplexing (OFDM)
Antenna
Receiver
Computer Simulation
Output

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

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abstract = "In multi-input-multi-output orthogonal frequency-division multiplexing systems, conventional channel-estimation techniques using comb-type training symbols give relatively large mean squared errors (MSEs) at the edge subcarriers. To reduce the MSEs at these subcarriers, a cyclic comb-type training structure is proposed. In the proposed cyclic training structure, all types of training symbols are transmitted cyclically at each antenna. At the receiver, the channel frequency responses that are estimated using each training symbol are averaged with weights obtained from the corresponding MSEs. Computer simulations showed that the proposed cyclic training structure gives more signal-to-noise ratio gain than the conventional training structure.",
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Enhanced channel-estimation technique for MIMO-OFDM systems. / Shin, Myeongchoel; Lee, Hakju; Lee, Chungyong.

In: IEEE Transactions on Vehicular Technology, Vol. 53, No. 1, 01.01.2004, p. 261-265.

Research output: Contribution to journalLetter

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T1 - Enhanced channel-estimation technique for MIMO-OFDM systems

AU - Shin, Myeongchoel

AU - Lee, Hakju

AU - Lee, Chungyong

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AB - In multi-input-multi-output orthogonal frequency-division multiplexing systems, conventional channel-estimation techniques using comb-type training symbols give relatively large mean squared errors (MSEs) at the edge subcarriers. To reduce the MSEs at these subcarriers, a cyclic comb-type training structure is proposed. In the proposed cyclic training structure, all types of training symbols are transmitted cyclically at each antenna. At the receiver, the channel frequency responses that are estimated using each training symbol are averaged with weights obtained from the corresponding MSEs. Computer simulations showed that the proposed cyclic training structure gives more signal-to-noise ratio gain than the conventional training structure.

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