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Orthogonal frequency division multiplexing (OFDM) has been widely adopted in communications systems due to its high spectral efficiency and resistance to multipath fading and impulse noise. However, because of its large peak-to-average power ratio (PAPR), OFDM is highly sensitive to nonlinear distortion. In wireless systems, where to achieve acceptable(More)
Small cell carcinoma of the gallbladder is a rare disease process with approximately 40 cases reported in the literature. It is most often found in elderly female population and is associated with cholelithiasis and cigarette smoking. A multidisciplinary approach to treatment with wide surgical resection and adjuvant chemotherapy is the current standard of(More)
Implementation of modern digital transceivers requires an expertise in numerous fields. Conventional transceiver design methods are no longer sufficient to guarantee a fast conversion from initial concept to final product. Moreover, in the testing phase, system simulations alone cannot provide the full insight into the system parameters and performance,(More)
As terrestrial audio broadcasting is moving from the analog to the digital era, there is an interest from the broadcasting industry to re-examine the existing amplitude modulation (AM) and frequency modulation (FM) hardware. The objective is to identify potential problems which may arise when using digital signals with the existing systems. In particular,(More)
Wireless Sensor Networks are increasingly employed as unobtrusive and infrastructureless networks in both indoor and outdoor environments. In order to reach their full potential, a number of key issues, such as localization and topology control, need to be addressed. However, the performance of these protocols is significantly impacted by the assumptions(More)