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Doppler-channel blind identification for noncircular transmissions in multiple-access systems

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2 Author(s)
Napolitano, A. ; Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. di Napoli Federico, Italy ; Tanda, M.

The problem of blindly estimating the parameters of a Doppler channel for noncircular transmissions in multiple-access communication systems is addressed. A nondata-aided algorithm based on the cyclostationarity features of the received signal is proposed to estimate amplitude, phase, time delay, and frequency shift of each user. Under mild assumptions on the disturbance and user signals, the proposed method provides estimates of the unknown parameters that are mean-square consistent. Moreover, the proposed algorithm is asymptotically near-far resistant, and is not based on the usual assumption of white and/or Gaussian noise.

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Communications, IEEE Transactions on  (Volume:52 ,  Issue: 12 )