A new transceiver design for multi-band UWB system

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Conference Proceeding

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Pulse position modulation (PPM) and rake receive are usually used in single-band ultra-wideband (SB-UWB) systems. For multi-band ultra-wideband (MB-UWB) systems,we propose a new transceiver design based on spectral keying (SK) modulation. We develop a blockwise multipath channel model represented by a finite impulse response (FIR) filter bank for MB-UWB systems. At the transmitter end, an SK-modulated information symbol is sent through a sequence of P subsymbol pulses that have distinct frequencies. At the receiver end, a minimum mean square error (MMSE) receiver bank followed by a simple mapping-based decision block is used to detect the received signals. Our scheme can increase the data rate by reducing the guard time between sub-symbol pulses aggressively and improve the system performance by blocking the coefficients of the channel impulse response (CIR) into vectors, while keeping the frequency diversity gain resulting from MB-UWB. Computer simulations illustrates the transceiver design and its effectiveness. © 2005 IEEE.

Publication Source (Journal or Book title)

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

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