Efficient Bidirectional DFE for Doubly Selective Wireless Channels
نویسندگان
چکیده
منابع مشابه
Efficient Bidirectional DFE for Doubly Selective Wireless Channels
The bidirectional decision feedback equalizer (DFE) performs two equalizations, one on the received signal and one on its timereversed version. In this paper, we apply the bidirectional DFE to wireless transmissions on rapidly time-varying dispersive channels and we propose an efficient implementation obtained by implementing the feedforward filter in the frequency domain. The feedback filter i...
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We propose to estimate time-varying frequency-selective channels using data-dependent superimposed training (DDST) and a basis expansion model (BEM). The superimposed training consists of the sum of a known sequence and a data-dependent sequence, which is unknown to the receiver. The data-dependent sequence cancels the effects of the unknown data on channel estimation. Symbol detection is perfo...
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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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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2006
ISSN: 1687-6172,1687-6180
DOI: 10.1155/asp/2006/70572