In this paper, an improved joint time-frequency (TF) analysis method based on a reassigned smoothed pseudo Wigner-Ville distribution (RSPWVD) has been proposed in interference detection for Global Navigation Satellite System (GNSS) receivers. In the RSPWVD, the two-dimensional low-pass filtering smoothing function is introduced to eliminate the cross-terms present in the quadratic TF distributi...

Attaining the ultimate (Holevo) limit to the classical capacity of a quantum channel requires the receiver to make joint measurements over long code-word blocks. For a pure-state channel, we show that the Holevo limit can be attained by a receiver that uses a multisymbol unitary transformation on the quantum code word followed by separable projective measurements. We show a concatenated coding ...

|The near-far problem can be the capacity limiting factor for a direct-sequence code division multiple access (DS-CDMA) communication systems. The \classical" near-far resistant receivers are multiuser detectors with rather high complexity requirements. In order to reduce the complexity, the class of minimum mean square error (MMSE) receivers was recently proposed. These receivers typically use...

Direct-conversion radio (DCR) receivers can offer highly integrated low-cost hardware solutions for spectrum sensing in cognitive radio systems. However, DCR receivers are susceptible to radio frequency (RF) impairments, such as in-phase and quadrature-phase imbalance, low-noise amplifier nonlinearities and phase noise, which limit the spectrum sensing capabilities. In this paper, we investigat...

Linear least squares estimation techniques can be used to enhance suppression of narrowband interference in direct-sequence spread-spectrum systems. Nonlinear techniques for this purpose have also been investigated recently. Here, we derive maximum-llkelihood receivers for direct-sequence Signal in Gaussian interference with known second order characteristics. It is shown that if the receiver u...

The need to recover high-dimensional signals from their noisy low-resolution quantized measurements is widely encountered in communications and sensing. In this paper, we focus on the extreme case of one-bit quantizers, propose a deep detector entitled LoRD-Net for recovering information symbols measurements. Our method model-aware data-driven architecture based unfolding first-order optimizati...

Smart devices and their applications led to a rapid evolution of the Internet Things. As result, there is an emerging need on energizing those low-power devices, while at same time achieving information transfer. In this context, simultaneous wireless power transfer (SWIPT) considered as appealing technology, since it can wirelessly remotely such simultaneously with Motivated by this, we herein...

Abstract Interference is an important limitation in many communication systems. It has been shown situations that the popular Gaussian approximation not adequate and interference exhibits impulsive behavior. This paper surveys different statistical models proposed for such interference, can generally be unified using class of sub-exponential family distributions, its impact on receiver design. ...

We investigate the performance of turbo interference cancellation receivers in the space time block coded (STBC) direct-sequence code division multiple access (DS-CDMA) system. Depending on the concatenation scheme used, we divide these receivers into the partitioned approach (PA) and the iterative approach (IA) receivers. The performance of both the PA and IA receivers is evaluated in Rayleigh...