title: The dual carrier ABSK system based on a FIR bandpass filter.
abstract: 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.
authors.affiliation: Department of Information Science and Engineering, Southeast University, Nanjing 210096, China. chenzhimin_118@163.com.
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Department of Information Science and Engineering, Southeast University, Nanjing 210096, China. wuln@seu.edu.cn.
authors.forename: Lenan
authors.initials: L
authors.lastname: Wu
authors.affiliation: Suzhou Easternwonder Information Technology Co., Ltd., Suzhou 215028, China. ewonder_jwwang@126.com.
authors.forename: Jiwu
authors.initials: J
authors.lastname: Wang