2013•Audio EngineeringRequires access

Design and Realization of CE-QAM Based on SDR

Zhou Sheng-yuan

Abstract

Because QAM is much easier being disturbed with the increase of its order in the additive noise channel and frequency selective fading channel as well as in non-linear device,a new method is put forward that converting QAM to envelop signal before transmission,namely,changing it to CE-QAM to solve the problem that its amplitude is sensitive in the channel above.Besides,modeling and simulation are conducted in CE-QAM modulation using the simulation tool,System Generator,based on the basic thought of SDR,thus,converting the algorithm to hardware-available module.

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Key concepts: QAM, Quadrature amplitude modulation, Realization (probability), Electronic engineering, Computer science, Transmission (telecommunications), Channel (broadcasting), Fading