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Design of a Multimode High Speed QAM Modulator Based on FPGA

Ming Hao

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Abstract

According to the baseband digitized theory,a multimode high speed QAM modulator is designed. The system design is given first.Then some units are designed, including encoder,mapper, shaping filter, etc.A scalable QAM modulate platform was implemented. It can generate some multimode QAM IF signals,the bit rate of which is up to 256Mbps.It can be used in the measure of high speed QAM demodulator.

About this research paper

What this paper is about

According to the baseband digitized theory,a multimode high speed QAM modulator is designed. The system design is given first.Then some units are designed, including encoder,mapper, shaping filter, etc.A scalable QAM modulate platform was implemented. It can generate some multimode QAM IF signals,the bit rate of which is up to 256Mbps.It can be used in the measure of high speed QAM demodulator.

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Available abstract

According to the baseband digitized theory,a multimode high speed QAM modulator is designed. The system design is given first.Then some units are designed, including encoder,mapper, shaping filter, etc.A scalable QAM modulate platform was implemented. It can generate some multimode QAM IF signals,the bit rate of which is up to 256Mbps.It can be used in the measure of high speed QAM demodulator.

Key concepts: QAM, Quadrature amplitude modulation, Baseband, Multi-mode optical fiber, Computer science, Demodulation, Electronic engineering, Field-programmable gate array

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