Design and Application of Amplitude-Locked Loop Separation System Based on SignalWAVe

Authors:
Gwo-Jia Jong;Peng-Liang Peng;Gwo-Jiun Horng
Affiliations:
Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan, ROC;Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan, ROC;Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan, ROC
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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Abstract

In this paper, we adopt concepts from the SignalWAVe development platform for the multi-speech signal separation system of a frequency modulation system. The signal separation system is formed using a phase-locked loop in combination with an amplitude-locked loop (ALL) and is modeled using a digital finite-impulse response (FIR) filtering algorithm. Therein, the objective is to improve the signal distortion of co-channel interferences and additive white Gaussian noise (AWGN). In comparison to a traditional separation system, the ALL is achieved in the monitored system and in signal interception applications with a characteristic analysis based on the power spectrum density. The field programmable gate array (FPGA) design platform has the advantages of flow simplicity, easy reconfiguration, and high compatibility for verification. The design system is operated in real time and is implemented in the system model using various chip designs. The FPGA is implemented system as a system on a chip for high efficiency. According to the simulated performances under an applied AWGN channel, the ALL system in combination with a digital FIR filter achieves prefect performance. The SignalWAVe verification system was also implemented on the chip by building, verifying programs, and implemented communication functions for practical application in the industry.