We present results of adaptive canceller experiments at the Rapid Prototyping Array which compare the quality of interference suppression achieved in the voltage and power domains. It is shown that if the optimal complex weights used to model the interference are stationary over the length of the time average, then the same level of suppression is achieved. A limitation of both methods is that ...

In a multi-user system in which interference is treated as noise, increasing the power of all transmissions eventually makes thermal noise negligible and causes the network to be interference-limited. This paper attempts to determine the power level at which a random-access ad hoc network becomes interference limited. Furthermore, when the network is not interference-limited (i.e., when signal ...

The CSMA/CA protocol is based on the “Interference as Noise” (IAN) paradigm i.e. it always gets rid of strong interference near a receiver to ensure quality of reception. However, it is well known from Multi-user Information Theory that treating Interference as Noise is not optimal. This paper proposes a class of protocols that employ the Successive Interference Cancellation (SIC) technique in ...

In this paper, interference mitigation capabilities of a noise-based wireless modulation technique are considered. In particular, the effect of narrowband interferers on the BER performance of such a system that uses pure noise as an information bearer is analyzed. The main scope of this paper is to compare the performance analysis of the various interference cancellation schemes for the noise ...

The performance of optimal codes on frequency-hopped channels with partial-band interference is investigated. The performance measures considered are channel capacity and cutoff rate. Worst-case partial-hand Gaussian noise interference is assumed with the interference independent of the transmitted signal. The capacity and cutoff rate are calculated as a function of the signal-to-noise ratio. W...

The problem of narrowband interference suppression in impulsive noise environments is considered in this paper. To suppress the interference we introduce a new nonlinear estimator. The proposed estimator can be applied to any discrete time, linear system which is observed in additive non-Gaussian measurement noise. The new filter is recursive, computationally efficient and with significantly im...

This paper studies the in-band interference of time-hopping spread spectrum (TH-SS) ultra-wideband (UWB) signals to narrowband receivers. Based on the analysis of general power spectral density (PSD) of TH-SS UWB signal, the interference of UWB signal is partitioned into two parts: (1) additive white Gaussian noise interference, and (2) jamming tone interference. Following this framework, a nov...

A digital decision-directed phase-locked loop (PLL) for use in optical pulse code-division multiple-access (CDMA) systems based on coherent correlation demodulation is proposed. PLL performance is affected by multiuser interference, laser phase noise and optical shot noise. The effect of these sources of interference and noise on PLL performance is evaluated based on a nonlinear model (the Fokk...

The short spreading code used by the BeiDou Navigation Satellite System (BDS) B1-I or GPS Coarse/Acquistiion (C/A) can cause aggregately undesirable cross-correlation between signals within each single constellation. This GPS-to-GPS or BDS-to-BDS correlation is referred to as self-interference. A GPS C/A code self-interference model is extended to propose a self-interference model for BDS B1, t...

— In the this paper we investigate advanced equalization schemes that are adapted to the mobile transmission channel. Mobile OFDM systems experience intercarrier interference (ICI). ICI is an additional disturbance that, in contrast to thermal noise, is of colored nature and is characterized through a not purely diagonal covariance matrix. The advanced equalization schemes studied here exploit ...