Low-complexity DFT-based channel estimation with leakage nulling for OFDM systems

Kyung Jun Kim, Hae Gwang Hwang, Kyung Jun Choi, Kwang Soon Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this letter, a low-complexity but near-optimal DFT-based channel estimator with leakage nulling is proposed for OFDM systems using virtual subcarriers. The proposed estimator is composed of a time-domain (TD) index set estimation considering the leakage effect followed by a low-complexity TD post-processing to suppress the leakage. The performance and complexity of the proposed channel estimator are analyzed and verified by computer simulation. Simulation results show that the proposed estimator outperforms conventional estimators and provides near-optimal performance while keeping the low complexity comparable to the simple DFT-based channel estimator.

Original languageEnglish
Article number6784535
Pages (from-to)415-418
Number of pages4
JournalIEEE Communications Letters
Volume18
Issue number3
DOIs
Publication statusPublished - 2014 Mar

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Nulling
Channel Estimation
Channel estimation
Orthogonal Frequency Division multiplexing (OFDM)
Leakage
Discrete Fourier transforms
Low Complexity
Orthogonal frequency division multiplexing
Estimator
Time Domain
Computer simulation
Processing
Post-processing
Computer Simulation

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Kim, Kyung Jun ; Hwang, Hae Gwang ; Choi, Kyung Jun ; Kim, Kwang Soon. / Low-complexity DFT-based channel estimation with leakage nulling for OFDM systems. In: IEEE Communications Letters. 2014 ; Vol. 18, No. 3. pp. 415-418.
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Low-complexity DFT-based channel estimation with leakage nulling for OFDM systems. / Kim, Kyung Jun; Hwang, Hae Gwang; Choi, Kyung Jun; Kim, Kwang Soon.

In: IEEE Communications Letters, Vol. 18, No. 3, 6784535, 03.2014, p. 415-418.

Research output: Contribution to journalArticle

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