Short range unlicensed radio links, with typical ranges of 1 to 100 meters, are becoming more and more popular. Millions of these radios are used today in such applications as automotive keyless entry, tire pressure monitoring, gate openers, wireless security systems, data links, remote meter reading and too many other applications to enumerate. With the number of short range devices (SRD’s) in...

Since battery technology has not progressed as rapidly as semiconductor technology, power efficiency has become increasingly important in wireless sensor networking, in addition to the traditional quality and performance measures, such as Band width, throughput, and fairness. Wireless sensor networks typically require low cost devices and low power applications. Hence, such networks usually emp...

This paper presents a proposed design for transcutaneous inductive powering links with “suspended-carrier”. The design used to transfer power and data to the implanted devices.This work describes the implementation of a 0.35μm CMOS integrated circuit using 3.3v supply dedicated to cochlear prosthesis. In the wireless biomedical implants the carrier frequency, which represent the resonant freque...

The energy detection of Continuous Phase Frequency Shift Keying (CP-FSK) signals is the optimum noncoherent detection technique yielding a minimum bit error rate (BER) on the additive white Gaussian noise (AWGN) channel. This scheme is usually used when carrier phase estimation is difficult. When a CP-FSK signal is passed through a frequency selective multipath fading channel, inter-symbol inte...

In this study, a GPS based vehicle tracking system which has lower cost than similar systems in the market is improved and realized. The system has been tested in Uludag University Campus and the positions of mobile vehicles have been observed with high accuracy from the control center. In this project GM 300 analog two-way radio is used for the communication between mobile vehicles and the con...

This paper deals with a new modulation recognition algorithm based on an analysis of time-frequency representations of di erent modulated signals (PSK, QAM and FSK). At rst, we conduct experimental studies over a range of time-frequency representations (TFR) in order to choose the more appropriated one. Once, an appropriated TFR has been chosen, some statistical functions applied on that TFR ar...

In this paper, we report a miniaturized low-power wireless remote environmental monitoring system. This system has been developed for on-site monitoring of water pollution by heavy-metal ions. The system is composed of three parts: an electrochemical sensor module using microfabricated electrodes for detecting heavy-metal contamination in sample water; a custom potentiostat module including rea...

This dissertation investigates some information theoretic aspects of communication over wideband fading channels and their applicability to design of signaling schemes approaching the wideband capacity limit. This work thus leads to enhanced understanding of wideband fading channel communication, and to the proposal of novel efficient signaling schemes, which perform very close to the optimal l...

The frequency shift of the ultra-narrow frequency shift keying (UNFSK) is far less than the ordinary binary frequency shift keying (FSK) method. Because the two frequencies of UNFSK are extremely close, the traditional demodulation method cannot separate them successfully. This study aims to successfully demodulate the UNFSK signals by applying cycle extension and notch filter. The signal proce...

MC (mesangial cell) proliferation is closely linked to the progression of glomerular disease. It has been reported that cAMP effectors suppress MC proliferation, inhibiting activation of MAPK (mitogen-activated protein kinase). In fibroblasts, activation of MAPK induces the expression of type D cyclin, whereas, in MCs, this induction has not been shown. In the present study, we explored the eff...