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Non-stationary interference suppression in direct sequence spread-spectrum (DS-SS) systems is addressed. A recently proposed method for the instantaneous frequency (IF) estimation, known as the quasi-maximum likelihood (QML) method, has been used to estimate the interference IF. The obtained IF estimation is in turn used for interference suppression. A significant advantage of the proposed method...
The fast growth of the wireless data transmission requires reliable and high data-rate modulation techniques that can cope with impairments of the time-varying multipath channels. The current demands are aimed at using the Internet anytime and anywhere. The main constraint to achieving these demands is the mobility. Suppression of Doppler spreading effects caused by high velocity of moving objects...
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