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Sensors 2014, 14(3), 5644-5653; doi:10.3390/s140305644

The Dual Carrier ABSK System Based on a FIR Bandpass Filter

Department of Information Science and Engineering, Southeast University, Nanjing 210096, China
Suzhou Easternwonder Information Technology Co., Ltd., Suzhou 215028, China
Author to whom correspondence should be addressed.
Received: 8 November 2013 / Revised: 6 March 2014 / Accepted: 7 March 2014 / Published: 20 March 2014
(This article belongs to the Section Sensor Networks)
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The special impacting filter (SIF) with IIR structure has been used to demodulate ABSK signals. The key points of SIF, including the resonance circuit’s high Q value and the “slope-phase discrimination” character of the filter sideband, are demonstrated in the paper. The FIR narrow-band bandpass filtering system, which can also provide the impact-filtering effect, is proposed. A dual carrier system of ABSK signals is designed with the proposed FIR filter as its receiver. The simulation results show that the FIR filter can work well. Moreover, compared to the traditional SIF, the proposed FIR filter can not only achieve higher spectral efficiency, but also give better demodulation performance.
Keywords: impacting effect; slope-phase discrimination; dual carrier; ABSK signal impacting effect; slope-phase discrimination; dual carrier; ABSK signal

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Chen, Z.; Wu, L.; Wang, J. The Dual Carrier ABSK System Based on a FIR Bandpass Filter. Sensors 2014, 14, 5644-5653.

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