Matrix computations (3rd ed.)
Systolic Architecture for Computing the Discrete Fourier Transform on FPGAs
FCCM '05 Proceedings of the 13th Annual IEEE Symposium on Field-Programmable Custom Computing Machines
EURASIP Journal on Applied Signal Processing
A low-cost time-hopping impulse radio system for high data rate transmission
EURASIP Journal on Applied Signal Processing
Asymptotic performance of second-order algorithms
IEEE Transactions on Signal Processing
Sampling signals with finite rate of innovation
IEEE Transactions on Signal Processing
Monobit digital receivers for ultrawideband communications
IEEE Transactions on Wireless Communications
An oversampled channelized UWB receiver with transmitted reference modulation
IEEE Transactions on Wireless Communications
Low Complexity Rake Receivers in Ultra-Wideband Channels
IEEE Transactions on Wireless Communications
Channel estimation for ultra-wideband communications
IEEE Journal on Selected Areas in Communications
Signal model and receiver algorithms for a transmit-reference ultra-wideband communication system
IEEE Journal on Selected Areas in Communications - Part 1
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This paper presents a flexible digital receiver for pulsed Ultra-Wideband (UWB) communications which is sampling below Nyquist rate. This receiver can trade demodulation performance for sampling rate, i.e. power consumption. The bit error rate for pulse amplitude and pulse position modulations is evaluated in AWGN and typical UWB channels. The performance of several types of equalizer is compared, taking into account their implementation complexity. A suboptimal but implementation efficient Minimum Mean-Square Error (MMSE) equalizer which reaches performances similar to the ideal MMSE equalizer is proposed. The impact of imperfect knowledge of the propagation channel and signal-to-noise ratio, due to the limited number of training symbols, on the performance of the receiver is assessed. Finally, the receiver architecture and implementation cost are discussed. The proposed subsampling receiver provides an attractive alternative to classical architectures based on correlation with a template.