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OFDM modulation combines advantages of high achievable data rates and relatively easy implementation. However, for proper recovery of input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in time domain which increases computational complexity in multi-access situations where the user is only interested in part of the spectrum...
This paper presents an efficient channel estimation scheme for multi-band orthogonal frequency division multiplexing based ultra-wideband communications. The scheme is based on a simple least-square (LS) algorithm, but enhanced with channel frequency response aided decision-directed detection as well as frequency-domain smoothing. The mean-squared error performance and computational complexity of...
OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. However, for proper recovery of the input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in the time domain which increases the computational complexity in multiaccess situations where the user is only interested in part of the...
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