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In this study, we have proposed an ingestible sensor platform utilizing gastric acid battery for daily healthcare. This platform has a fundamental application to precisely measure core body temperature as one of the most useful vital signs for health check. It also has the expandability to add various biosensors such as pH, pressure sensors etc‥ The architecture without a conventional battery is essential...
In cognitive radios, reliable detection of wireless systems is crucial since these radios share the frequency spectrum with other wireless systems. In a heterogeneous environment, systems with different priorities have different protection requirements and operating parameters.The cognitive radio must guarantee highly reliable communication in the primary systems, but need not necessarily guarantee...
In cognitive radios, reliable detection of wireless systems is crucial since these radios share the frequency spectrum with other wireless systems. At the same time, it is necessary to avoid interference with the primary systems. In a heterogeneous environment, however, systems with different priorities have different protection requirements and operating parameters. The cognitive radio must guarantee...
In a digital mobile radio transmission, long-delayed multi-path propagation causes frequency selective fading, resulting in signal waveform distortion and hence bit error rate (BER) degradation. Comparison of multipath distortion among various digital modulation techniques (binary, quaternary, offset quaternary, and minimum phase shift keying (BPSK, QPSK, OQPSK and MSK)) is made using a two-ray propagation...
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