Zhonghua Liang

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Recent developments in both the consumer electronics (CE) and PC industries make ultra-wideband (UWB) an almost perfect wireless solution to drive and benefit from the ongoing convergence of home entertainment and computing network. In order to meet increasing consumer demand for low cost, low power, flexible, and reliable wireless home entertainment(More)
Based on the prototype of wind electricity conversion system (WECS), this paper presents a self-adaptive control strategy for doubly fed induction generators (DFIG) applied to variable speed constant frequency wind generation system. The strategy mainly depends on wind speed estimation, the wind turbine and generator parameters. Wind speed is estimated by(More)
It is quite important for Device-to-Device (D2D) communication to make decision in selecting which part of the celluar radio resource, namely uplink (UL) resource or downlink (DL) resource, to be reused for the purpose of higher system capacity. In this paper, we propose an interference control scheme in DL mode to limit the base station's (BS) interference(More)
A recently proposed transmitted reference pulse cluster (TRPC) structure contains compactly spaced reference and data pulses, and enables a low complexity, robust and practical auto-correlation detector to be used at the receiver. Previous research indicated that the integration interval of the auto-correlation detector is critical to the performance of(More)
Energy detection receivers are attractive in non-coherent (NC-) ultra-wideband (UWB) communication systems with pulse position modulation (PPM) due to their simplicity of implementation. In order to mitigate the impact of noise on bit error rate (BER) performance, weighted energy detection (WED) receivers were proposed for NC-PPM-UWB systems. In this paper,(More)
The square wave inverter with adjustable filter is proposed for high speed motor power supply. The six-step square wave inverter can reduce the switching frequency which is beneficial to high frequency inverter due to the switching frequency limitation. The adjustable filter combines low-pass filter with band-blocking filters which have adjustable(More)
This paper presents the receiver design of a passband transmitted reference pulse cluster (TRPC) ultra-wideband (UWB) communication system and analyzes its bit error probability (BEP) in the presence of phase noise inherent in local oscillators. Based on a unified model of phase noisy oscillators, a theoretical BEP expression is obtained to evaluate the(More)