Convex Optimization
Ultra Wideband Wireless Communication
Ultra Wideband Wireless Communication
Compressed sensing reception of bursty UWB impulse radio is robust to narrow-band interference
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Energy-Detection UWB Receivers with Multiple Energy Measurements
IEEE Transactions on Wireless Communications
Applications of a Kushner and Clark lemma to general classes of stochastic algorithms
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Near-Optimal Signal Recovery From Random Projections: Universal Encoding Strategies?
IEEE Transactions on Information Theory
Stable Recovery of Sparse Signals Via Regularized Minimization
IEEE Transactions on Information Theory
Channel estimation for ultra-wideband communications
IEEE Journal on Selected Areas in Communications
A Statistical Model for Indoor Multipath Propagation
IEEE Journal on Selected Areas in Communications
Analysis of UWB transmitted-reference communication systems in dense multipath channels
IEEE Journal on Selected Areas in Communications
Performance enhancement of differential UWB autocorrelation receivers under ISI
IEEE Journal on Selected Areas in Communications - Part 1
A novel low complexity data demodulation algorithm for pulse position modulation
Digital Signal Processing
Hi-index | 0.00 |
We propose a novel receiver for Ultra-Wide-band Impulse-Radio communication in Wireless Sensor Networks, which are characterized by bursty traffic and severe power constraints. The receiver is based on the principle of Compressed Sensing, and exploits the sparsity of the transmitted signal to achieve reliable demodulation from a relatively small number of projections. The projections are implemented in an analog front-end as correlations with tractable test-functions, and a joint decoding of the time of arrival and the data bits is done by a DSP back-end using an efficient quadratic program. The proposed receiver differs from extant schemes in the following respects: (i) It needs neither a high-rate analog-to-digital converter nor wide-band analog delay lines, and can operate in a significantly under-sampled regime. (ii) It is robust to large timing uncertainty and hence the transmitter need not waster power on explicit training headers for timing synchronization. (iii) It can operate in a regime of heavy inter-symbol interference (ISI), and therefore allows a very high baud rate (close to the Nyquist rate). (iv) It has a built-in capability to blindly acquire and track the channel response irrespective of line-of-sight/non-line-of-sight conditions. We demonstrate that the receiver's performance remains close to the maximum likelihood receiver under every scenario of under-sampling, timing uncertainty, ISI, and channel delay spread.