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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Haring, L. Bieder, S. Czylwik, A. |
| Copyright Year | 1972 |
| Abstract | This contribution considers the estimation and compensation of residual multiple carrier frequency offsets (CFOs) and sampling frequency offsets (SFOs) in the uplink of multiuser OFDM systems. Based on the observation of a user-dependent phase rotation, an approximate maximum-likelihood (ML) estimator is proposed in order to estimate the CFOs and SFOs and to track the phase in a post-synchronization step. By using a Taylor approximation, the estimation complexity is reduced. Bit error-ratio (BER) simulations show that the system performance degradation due to (small) frequency mismatches is negligible if the proposed method is applied. |
| File Size | 420110 |
| File Format | |
| ISSN | 00906778 |
| Volume Number | 57 |
| Issue Number | 12 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-12-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Frequency synchronization OFDM Frequency estimation Maximum likelihood estimation Phase estimation Sampling methods Bit error rate Degradation Oscillators Doppler shift Carrier frequency offset sampling frequency offset uplink multiuser |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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