Exploratory research into the role of visual and verbal working memory in diagrammtic reasoning is presented. Eighty subjects participated in an experiment where thirty-four different gain/loss problems were represented in sentential and graphical form. In order to test the role of each component of Baddeley’s model of working memory, subjects performed verbal, visual, and mental suppression ta...

Narrowband and partial-band interference can severely degrade the performance of GPS receivers. The use of digital signal processing in a receiver has been shown to provide protection against this type of interference in communications systems and has been proposed for application in future GPS systems. This paper discusses the measured effects of narrowband interference suppression on GPS rece...

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...

A mainlobe interference suppression method is proposed in this paper, which can still work when the signal of interest (SOI) is present in the training data. In this method, the iterative adaptive approach (IAA) is applied to spatial spectrum estimation at first. Then, IAA spatial spectrum is used to reconstruct the interference-plus-noise covariance matrix (INCM). Next, the eigenvector associa...

Multiple Input Multiple Output (MIMO) technique is considered as a cost-effective and promising technique for the next generation wireless system. Orthogonal Space-Time Block Codes (OSTBC) scheme is one of the most important coding schemes for MIMO system. The performance of an MIMO system using OSTBC (MIMO-OSTBC), however, degrades significantly in presence of strong interferences. In this pap...

| Parallel interference cancellation (PIC) receivers are among the most promising receiver techniques for future code-division multiple-access (CDMA) systems. Interference cancellation eeciency relies on the knowledge of the number of users and propagation paths needed in multiple-access interference (MAI) estimation. In practice, the exact number of users and paths is not known exactly, e.g., ...

For high data rate ultra wideband communication system, performance study of mutual interference such as suppression of interference signal by performing pulse shaping from UWB to other narrowband system using wavelet technique and reduction of interference from other narrowband system to UWB system in conjunction with Transmitted-Reference (TR-UWB) signaling scheme with adaptive receivers is a...