Unified analysis for DOA estimation algorithms in array signal processing
Signal Processing - Theme issue on singular value decomposition
Comments on "Linearization method for finding Cramer-Rao bounds insignal processing" [and reply]
IEEE Transactions on Signal Processing
Subspace-based blind channel estimation: generalization and performance analysis
IEEE Transactions on Signal Processing
Non-Data-Aided Joint Carrier Frequency Offset and Channel Estimator for Uplink MC-CDMA Systems
IEEE Transactions on Signal Processing
Frequency domain equalization for single-carrier broadband wireless systems
IEEE Communications Magazine
Transmission techniques for digital terrestrial TV broadcasting
IEEE Communications Magazine
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Cyclic-prefix code division multiple access (CP-CDMA) has been shown to be effective in combating frequency selective fading channels. However, this effectiveness can be leveraged only with accurate channel impulse response (CIR) estimate and proper compensation for the carrier frequency offset (CFO). In this paper, we formulate a subspace-based joint CFO and CIR estimator without using any pilot symbols. The users' spreading codes are selected following the steps in [7]. We show that the selected users' spreading codes must also satisfy an additional requirement in order to have the signal subspace dimension to be independent of users' CFO and CIR. For high signal to noise ratio, we show that the proposed CFO estimator is unbiased and derive the theoretical mean square error for CFO estimate. Computer simulation results show that the proposed estimator's performance is close to Cramer-Rao lower bound.