Name
Title | ||
|---|---|---|
Frequency-Offset Estimation for MIMO and OFDM Systems Using Orthogonal Training Sequences |
Abstract | ||
|---|---|---|
We propose a training-sequence-based frequency-offset estimator for a multiple transmit-and-receive antenna system in frequency-flat fading channels. The estimator is based on the maximum likelihood (ML) criterion and does not require channel information. To reduce the computational load, they propose to use special training sequences-the periodic orthogonal codes. Using these codes, we get a closed form estimator which requires much lower computational load (some additions and multiplications). For the high signal-to-noise ratio and small frequency offset, the proposed estimator achieves the performance of the optimal ML estimator, which locates the peak of the likelihood function. We also apply the proposed estimator to a multiple antenna system in frequency-selective channels and an orthogonal-frequency-division-multiplexing system. With theoretical analysis and simulations, we evaluate the performance of the proposed estimator |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/TVT.2006.883805 | Vehicular Technology, IEEE Transactions |
Keywords | Field | DocType |
MIMO communication,OFDM modulation,antenna arrays,fading channels,frequency estimation,matrix algebra,maximum likelihood estimation,orthogonal codes,MIMO systems,OFDM systems,frequency-flat fading channels,frequency-offset estimation,frequency-selective channels,maximum likelihood criterion,multiple transmit-and-receive antenna system,multiple-input multiple-output system,orthogonal training-sequence,orthogonal-frequency-division-multiplexing system,periodic orthogonal codes,signal-to-noise ratio,Frequency offset,multiple antennas,multiple-input multiple-output (MIMO),orthogonal frequency division multiplexing (OFDM) | Efficient estimator,Computer science,Control theory,Fading,Minimax estimator,Frequency offset,MIMO,Electronic engineering,Estimation theory,Orthogonal frequency-division multiplexing,Estimator | Journal |
Volume | Issue | ISSN |
56 | 1 | 0018-9545 |
Citations | PageRank | References |
6 | 0.59 | 14 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Kyungchun Lee | 1 | 106 | 15.06 |
| Joohwan Chun | 2 | 396 | 35.12 |