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In wireless cellular system, providing Quality-of-Service (QoS) control during hand-offs is highly desirable. In this paper, a method to estimate hand-off probability using statistically recorded history data of mobile phone's mobility (connection or hand-off) is proposed. By designing a special statistical database structure and casting a three-layer neural network on the history data, the cellular...
Simulation results of an inverter-fed permanent magnet brushless motor drive system for electric vehicles are reported. Studies are concentrated on two modes (average current control and current tracking control) and two PWM (pulse width modulation) methods (half-bridge PWM and full-bridge PWM). The simulation waveforms of current, torque developed and power electronic device's switching frequency...
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