A new puke position modulation code division multiple access (PPM-CDMA) system is proposed for an indoor optical wireless channeL As a signature sequence for CDMA an optical orthogonal code (OOC) is used To reduce multiple access interference, two interference cancellation schemes are employed: decorrelating detection and successive interference cancellation (SIC). The bit error rate of the pro...

This study evaluates the discriminative power of sequential spectrum analysis of the short-term electrocardiogram (ECG) time series in separating normal and subjects with life threatening arrhythmias like, ventricular tachycardia/fibrillation (VT/VF). The raw ECG time series is transformed into a series of binary symbols and the binary occupancy or relative distribution of mono-sequences (i.e. ...

In many applications, ultra-wide band (UWB) system experiences impulse noise due to surrounding physical noise sources. Therefore, a conventional receiver (correlator or matched filter) designed for additive Gaussian noise system is not optimum for an impulse noise affected communication channel. In this paper, we propose a new robust receiver design that utilizes the received UWB signal cluste...

We describe the genotypes and allele distribution of interleukin 28B (IL28B) rs12979860 and rs8099917 single nucleotide polymorphisms (SNPs) in hepatitis C virus (HCV) G1-4 infected patients, to assess predictive ability and to determine whether the combined determination of two IL28B SNPs might improve sustained virologic response (SVR) prediction of both in HCV mono- and HIV/HCV co-infected p...

This article investigates the basic theory of software-based receivers for L1-band civilian GPS applications, including a discussion of signal acquisition and tracking, and the need for bit synchronization in the receiver. Also included is a brief description of an L1-band GPS receiver, the MAX2741, which serves as a compact and inexpensive RF front-end for the receiver. A similar article appea...

Bit-Error-Ratio (BER) of intensity modulated optical orthogonal frequency division multiplexing (OFDM) system is analytically evaluated accounting for nonlinear digital baseband distortion in the transmitter and additive noise in the photo receiver. The nonlinear distortion that is caused by signal clipping and quantization is taken into consideration. The signal clipping helps to overcome the ...

This paper investigates the design optimization of digital free-space optoelectronic interconnections with a specific goal of minimizing the power dissipation of the overall link, and maximizing the interconnect density. To this end, we discuss a method of minimizing the total power dissipation of an interconnect link at a given bit rate. We examine the impact on the link performance of two com...

A key challenge in Molecular Communications (MC) is low data transmission rates, which can be addressed by channel multiplexing techniques. One way to achieve MC leverage the diversity of different molecule types with respect their receptor binding characteristics, such as affinity and kinetic binding/unbinding rates. In this study, we propose a practical scheme for MC, based on ligand-receptor...

An approach is proposed to the filtering of an additive mixture ultra-wideband chaotic signals and white Gaussian noise, in order retrieve useful signal receiver. The role filter performed by a passive frequency-selective circuit, identical one involved formation oscillations chaos generator. A mathematical model modulating generator, detecting receiving sequence radio pulses noisy channel desi...