Time-varying channel estimation in OFDM systems with null subcarriers

Jihyung Kim, Sangho Nam, Dong Seung Kwon, Daesik Hong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

In this paper, we propose a robust channel estimation method in OFDM systems over fast fading channels. In consideration of the effect of null subcarriers, the proposed channel estimation is first performed in the frequency domain. By making efficient use of channel correlation and the property of ICI to reduce the number of needed parameters for channel estimation, robust channel estimation for ICI is accomplished in parallel, pilot cluster by pilot cluster. It is then transformed into the time domain to obtain a gain in noise reduction and to reduce interpolation error as well. Simulation results show that the proposed channel estimation has good performance compared to previous works.

Original languageEnglish
Title of host publication2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Pages1409-1412
Number of pages4
DOIs
Publication statusPublished - 2008 Jul 28
Event2008 IEEE 67th Vehicular Technology Conference-Spring, VTC - Marina Bay, Singapore
Duration: 2008 May 112008 May 14

Other

Other2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
CountrySingapore
CityMarina Bay
Period08/5/1108/5/14

Fingerprint

Time-varying Channels
Channel Estimation
Channel estimation
Orthogonal Frequency Division multiplexing (OFDM)
Orthogonal frequency division multiplexing
Null
Robust Estimation
Interpolation Error
Noise Reduction
Fading Channels
Noise abatement
Fading channels
Frequency Domain
Time Domain
Interpolation
Simulation

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Kim, J., Nam, S., Kwon, D. S., & Hong, D. (2008). Time-varying channel estimation in OFDM systems with null subcarriers. In 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC (pp. 1409-1412). [4525852] https://doi.org/10.1109/VETECS.2008.296
Kim, Jihyung ; Nam, Sangho ; Kwon, Dong Seung ; Hong, Daesik. / Time-varying channel estimation in OFDM systems with null subcarriers. 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC. 2008. pp. 1409-1412
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Kim, J, Nam, S, Kwon, DS & Hong, D 2008, Time-varying channel estimation in OFDM systems with null subcarriers. in 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC., 4525852, pp. 1409-1412, 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC, Marina Bay, Singapore, 08/5/11. https://doi.org/10.1109/VETECS.2008.296

Time-varying channel estimation in OFDM systems with null subcarriers. / Kim, Jihyung; Nam, Sangho; Kwon, Dong Seung; Hong, Daesik.

2008 IEEE 67th Vehicular Technology Conference-Spring, VTC. 2008. p. 1409-1412 4525852.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kim J, Nam S, Kwon DS, Hong D. Time-varying channel estimation in OFDM systems with null subcarriers. In 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC. 2008. p. 1409-1412. 4525852 https://doi.org/10.1109/VETECS.2008.296