BROWSE
Detail
Journal Article
Cross‐relation‐based frequency‐domain blind channel estimation with multiple antennas in orthogonal frequency division multiplexing systems
Cited 0 time in 
Share 
Share
- Authors
- Jaehyun Park, Joohwan Chun, Byung Jang Jeong
- Issue Date
- 2013-11
- Citation
- IET Communications, v.7, no.16, pp.1753-1768
- ISSN
- 1751-8628
- Publisher
- IET
- Language
- English
- Type
- Journal Article
- Abstract
- Frequency domain blind channel estimation methods for orthogonal frequency division multiplexing (OFDM) systems with multiple antennas are proposed, in which the cross relation between the channel gains and a single snapshot of the received signal on each subcarrier is utilised. Necessary and sufficient conditions for the identifiability of a single-input multiple-output OFDM channel estimator are derived and, furthermore, using a first-order perturbation analysis, the approximation of meansquared- error (MSE) is analytically obtained, which shows that the proposed estimator is approximately unbiased at high signal-to-noise ratio. The proposed estimator exhibits lower MSEs than those of both the existing subspace-based and deterministic blind channel estimators and is less sensitive to the estimation error of the number of multipaths. Finally, the extension of the proposed channel estimation to multiple-input-multiple-output OFDM is presented. © The Institution of Engineering and Technology 2013.
- KSP Keywords
- Blind channel estimation, Channel Estimator, Channel estimation(CE), Estimation error, First-order, Frequency domain(FD), High signal-to-noise ratio, Multiple input multiple output(MIMO), Necessary and sufficient conditions, Orthogonal Frequency-Division Multiplexing(OFDM), Signal noise ratio(SNR)