نتایج جستجو برای: demodulator
تعداد نتایج: 611 فیلتر نتایج به سال:
Real-world performance of the ATSC DTV standard has been the subject of great interest and debate. In this paper, we report on a detailed study of reception at 34 sites in the Dallas-Ft. Worth region during September, 2000. We report on statistics such as field strength, service availability, system performance, building attenuation, site margin, and sensitivity to antenna placement. These test...
Abstract This letter proposes a novel dynamic range extension method using an instantaneous frequency (IF)‐tracking for heterodyne fibre optic hydrophones (FOHs). IFs are used to compensate large signal amplitudes in the demodulator. Theoretical analysis and simulation prove effectiveness of proposed algorithm. Simulation results achieve at least 19.76 dB improvement, demonstrating great potent...
Results of a 15um Current Assisted Photonic Demodulator (CAPD) pixel showing 80% modulation contrast at a modulation frequency of 100 MHz are presented. This allows to build 3D Time-of-Flight camera systems with either reduced depth noise or reduced modulated light power needs. A performance comparison with the DS325 unchanged, versus one with the modulation frequency and contrast improved, sho...
In this paper we propose a transmission concept that combines phase hopping and space-time coding to enable efficient multi-antenna transmission. The proposed space-time code can be considered as a non-orthogonal construction, a sibling of the ABBA code proposed in [7]. The transmission concept proposed here has the advantage that is can be utilized on top of the Alamouti code, essentially with...
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