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In the well-recognized cloud radio access networks concept, radio-over-fiber (ROF) links can serve as an option to make fronthaul connections conveying multi-band radio signals. High-performance ROF links covering future higher frequency commonly rely on external modulation. However, externally-modulated ROF links suffer from inherent modulator nonlinearities. In order to address this issue, we investigated...
In order to reduce the social panic triggered by plane accidents, an effective approach is urgently needed to look for the missing passenger planes and then comfort the family of person who lost their lives in the accident. By analyzing the inherent features and motion law of the accident plane, this paper puts forward a differential dynamic model based method for locating the plane, which can effectively...
This paper proposes a dual-frequency location scheme combining WLAN and RFID signals at different frequency bands to conduct indoor location together in radio-over-fiber (RoF) systems. Using dual-frequency method, the wallboard attenuation can be estimated more accurately. In particular, we propose three procedures for wallboard auto-detection and free-space propagation model calibration which perform...
In order to reduce the computational load and improve the computational accuracy for parameter optimization of Muskingum routing model, a new algorithm, DNA accelerating evolutionary algorithm (DNAAEA) is proposed. With the shrinking of searching range, the method gradually directs to optimal result with the excellent individuals obtained by DNA evolutionary algorithm. Its global convergence is analyzed...
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