Multifrequency frequency-domain spectrometer for tissue analysis

Multifrequency frequency-domain spectrometer for tissue analysis.

In this paper we describe the modification and assessment of a standard multidistance frequency-domain near infrared spectroscopy (NIRS) instrument to perform multifrequency frequency-domain NIRS measurements. The first aim of these modifications was to develop an instrument that enables measurement of small volumes of tissue such as the cervix, which is too small to be measured using a multidi...

An On-Chip Frequency-Domain Submillimeter-Wave Spectrometer

Because of the frequency limitation of semiconductor electronic devices, measurement instruments such as network analyzers can operate only below approximately 100 GHz. Thus, even if ultrahigh-frequency HBTs can be developed, they can only be directly measured up to 100 GHz, with higher-frequency performance extrapolated according to certain frequency roll-off models. Clearly, such an extrapola...

Discriminant Analysis for ARMA Models Based on Divergency Criterion: A Frequency Domain Approach

The extension of classical analysis to time series data is the basic problem faced in many fields, such as engineering, economic and medicine. The main objective of discriminant time series analysis is to examine how far it is possible to distinguish between various groups. There are two situations to be considered in the linear time series models. Firstly when the main discriminatory informati...

LF-frequency domain analysis

Single-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels

In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...