Estimation and Direct Equalization of Doubly Selective Channels
نویسندگان
چکیده
منابع مشابه
Estimation and Direct Equalization of Doubly Selective Channels
We propose channel estimation and direct equalization techniques for transmission over doubly selective channels. The doubly selective channel is approximated using the basis expansion model (BEM). Linear and decision feedback equalizers implemented by time-varying finite impulse response (FIR) filtersmay then be used to equalize the doubly selective channel, where the time-varying FIR filters ...
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Doubly-selective wireless communication channels, i.e., those with significant selectivity in both time and frequency domains, arise in applications operating over wide bandwidths, at high carrier frequencies, and under high mobility conditions. Many systems designed to communicate over such channels are OFDMbased and employ large block lengths to combat capacity loss resulting from the use of ...
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In this paper, we propose a serial equalizer for doubly-selective channels. We use a Basis Expansion Model (BEM) Finite Impulse Response (FIR) to model the doubly-selective channel and to design the serial equalizer. In contrast to our previous works, we decrease the modeling error of the BEM FIR by fitting the BEM FIR to the true doubly-selective channel over a time-window that is independent ...
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In this paper we propose a zero forcing (ZF) timevarying (TV) finite impulse response (FIR) equalizer for doublyselective (timeand frequency-selective) channels. We use the basis expansion model (BEM) to approximate the doubly-selective channel and to design the TV FIR equalizer. This allows us to turn a large TV problem into an equivalent small time-invariant (TIV) problem, containing only the...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2006
ISSN: 1687-6180
DOI: 10.1155/asp/2006/62831