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In this letter, a novel maximizing signal-to-interference ratio (max-SIR) time–frequency packing scheme for multicarrier faster-than-Nyquist signaling is proposed. The proposed scheme is based on the low complexity symbol-by-symbol detector. Specifically, we optimize the time–frequency spacing under the given signaling efficiency to maximize the SIR, i.e., the ratio between the energy of useful signal...
Based on the cavity model of microstrip antennas (MPAs) and the principle of superposition, the distribution of electromagnetic field of loaded MPAs is analyzed in this paper. With the proposed theory, input impedance and resonant frequency for some loading cases can be obtained and some useful conclusions are given. Example of rectangular loaded MPA is illustrated and comparisons between calculation...
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