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Blind identification and equalization of CDMA time-varying dispersive channels in multipath-Doppler domain

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3 Author(s)
Liu Yulin ; Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; Jing Xiaojun ; Peng Qicong

We have developed a discrete-time canonical model of CDMA time-varying (TV) channels based on canonical samples of the channel's spreading function in the multipath-Doppler domain. With this model, we propose a new two-stage blind identification and equalization algorithm based on the second-order statistics (SOS) of the observations. The ideal single-input multi-output (SIMO) model is equivalent to an additive Gaussian noisy (AGN) SIMO model so as to cancel the error propagation effects of this two-stage method. Compared with the subspace method, this new algorithm needs much less computation of the input correlation of the equivalent multi-input single-output (MISO) model. Simulations demonstrate the effectiveness of the algorithm

Published in:

Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on  (Volume:2 )

Date of Conference:

2001