We propose a new non-parametric adaptive detector for detecting an unknown broadband signal in interference consisting of non-stationary narrowband components and a locally stationary broadband component. An important feature of this detector is that it needs no prior information about the signal or interference. The proposed detector is based on the integration of the non-parametric power law ...

The detector, a multi-channel photometric detector, described in this paper was developed using multi-wavelength LEDs (light emitting diode) and phototransistors for absorbance measurement controlled by an Intel 8031 8-bit single chip microcomputer. Up to four flow cells can be attached to the detector. The LEDs and phototransistors are both inexpensive, and reliable. The results given by the d...

carotenoids are red, orange and yellow pigments, which are widely distributed in fruit and vegetables. the aim of this research is to investigate the effect of conventional, high pressure and microwave cooking on the concentrations of β-carotene in carrot and sweet corn. raw carrots were washed, peeled and diced to a uniform size and then frozen at -70°c. sweet corn was also provided in a simil...

This paper presents a CFAR detector based on the bootstrap for detecting signals with unknown amplitude, phase and frequency such as found in conventional pulsed radar and sonar systems. The detector is robust against non-Gaussian noise, and can still maintain the false alarm rate without much modification if consistent estimates are substituted for unknown parameters. Preliminary asymptotic re...

Germanium orthogonal strip detectors have been produced using amorphous-semiconductor contacts. The amorphoussemiconductor contact fabrication process is relatively simple, and it is capable of producing fine-pitched electrode structures. The bipolar blocking behavior of the amorphoussemiconductor contact permits its use on both sides of a detector, replacing conventional B ion implanted and Li...

We develop a computationally efficient approximation of the maximum likelihood (ML) detector for 16 Quadrature Amplitude Modulation (16QAM) in multiple input multiple output (MIMO) systems. The detector is based on a semi definite relaxation (SDR) of the ML problem. The resulting optimization is a semi definite program (SDP) which can be solved in polynomial time with respect to the number of i...

The relative error-probability performance of three linear multiuser detectors—the minimum mean-square error detector, the decorrelator, and the conventional matched filter (MF) detector—is investigated under nonorthogonal signaling and additive white Gaussian noise conditions. It is shown that, contrary to the general belief, the minimum meansquare-error (MMSE) detector does not uniformly outp...

In this paper, we introduce a multiuser receiver based on the Kalman lter, which can be used for joint symbol detection and channel estimation. The proposed algorithm has the advantage of working even when the spreading codes used have a period larger than one symbol interval (\long codes"), unlike adaptive equalizer-type detectors. Simulation results which demonstrate the performance advantage...