Pulse oximetry measures the relative concentration of arterial oxygenated hemoglobin and reduced hemoglobin. This paper presents the design of a pulse oximeter, which measures the presence of a third substance, carboxyhemoglobin (HbCO), by unfiltered LEDs at 660 nm, 810 nm, and 940 nm. Background information is given on the theory of pulse oximetry. Theoretical approximations and calculations w...

| In this paper we consider the following problem: to identify a subset of the samples of a band-limited signal that has been corrupted by noise. It is assumed that the Fourier transform of the signal is partially known (typically because the signal is band-limited). This is a nonlinear problem which is closely connected to several other signal processing problems.

BCI is one of the most intriguing technologies among other HCI systems, mostly because of its capability of recording brain activities. Spelling BCIs, which help paralyzed people to maintain communication, are one of the striking topics in the field of BCI. In this scientific a spelling BCI system with high transfer rate and accuracy that uses SSVEP signals is proposed.In addition, we suggested...

In this paper we consider the following problem: to identify a subset of the samples of a band-limited signal that has been corrupted by noise. It is assumed that the Fourier transform of the signal is partially known (typically because the signal is band-limited). This is a nonlinear problem which is closely connected to several other signal processing problems.

Radar Signal Processing has been an interesting area of research for realization of programmable digital signal processor using VLSI design techniques. Digital Signal Processing (DSP) algorithms have been an integral design methodology for implementation of high speed application specific real-time systems especially for high resolution radar. CORDIC algorithm, in recent times, is turned out to...