Impulse Series for UWB-Based Cognitive Radio System

Space-shape coded UWB-impulse radio system

Proposed is a novel space-shape coding scheme with multiple antennas and multiple orthonormal waveforms for UWB-IR systems. Since the proposed coding scheme can be applied for every frame, the spatial diversity can be achieved even without the invariant channel condition over frames. Furthermore, the proposed scheme can provide an additional power gain to enhance BER performance while the FCC s...

Pulse Shaping for Impulse Radio UWB

There are many ways how to increase quality of service (QOS) or the number of wireless users in the shared spectrum of modern wireless communication. It is possible to use better modulation schemes or multiplexes, but all of these techniques do not constitute a dynamic solution. A more intelligent solution of the spectrum access gives us the potential to solve these spectrum problems. Cognitive...

Compressive sampling based differential detection for UWB impulse radio signals

Noncoherent detectors significantly contribute to the practical realization of the ultrawideband (UWB) impulse-radio (IR) concept, in that they allow avoiding channel estimation and provide highly efficient reception capabilities. Complexity can be reduced even further by resorting to an all-digital implementation, but Nyquist-rate sampling of the received signal is still required. The current ...

Impulse Radio UWB Signal Detection Based on Compressed Sensing

The extremely high sampling rate is a challenge for ultra-wideband (UWB) communication. In this paper, we study the compressed sensing (CS) based impulse radio UWB (IR-UWB) signal detection and propose an IR-UWB signal detection algorithm based on compressive sampling matching pursuit (CoSaMP). The proposed algorithm relies on the fact that UWB received signal is sparse in the time domain. The ...

A Largely Reconfigurable Impulse Radio UWB Transceiver