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Design and Realization of GMSK Modulator Based on FPGA and CMX589A

Wei Nie

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Abstract

As a bandwidth-efficient and power efficient modulation method,Gaussian Minimum Shift Keying(GMSK) is important for power limited digital mobile communication systems having nonlinear channel with fading and Doppler frequency shift.This paper presents a new design and realization of GMSK modulator based on FPGA and CMX589A after thinking out of characteristic of GMSK modulation,including the system structure,CMX589A to realize Gaussian filter,frequency modulator based on FPGA and microcontroller.The functions and performance of system are tested,and the results validate the approach and work reliable.

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What this paper is about

As a bandwidth-efficient and power efficient modulation method,Gaussian Minimum Shift Keying(GMSK) is important for power limited digital mobile communication systems having nonlinear channel with fading and Doppler frequency shift.This paper presents a new design and realization of GMSK modulator based on FPGA and CMX589A after thinking out of characteristic of GMSK modulation,including the system structure,CMX589A to realize Gaussian filter,frequency modulator based on FPGA and microcontroller.The functions and performance of system are tested,and the results validate the approach and work reliable.

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Available abstract

As a bandwidth-efficient and power efficient modulation method,Gaussian Minimum Shift Keying(GMSK) is important for power limited digital mobile communication systems having nonlinear channel with fading and Doppler frequency shift.This paper presents a new design and realization of GMSK modulator based on FPGA and CMX589A after thinking out of characteristic of GMSK modulation,including the system structure,CMX589A to realize Gaussian filter,frequency modulator based on FPGA and microcontroller.The functions and performance of system are tested,and the results validate the approach and work reliable.

Key concepts: Minimum-shift keying, Field-programmable gate array, Electronic engineering, Realization (probability), Computer science, Modulation (music), Bandwidth (computing), Embedded system

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