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A Digital Receiver Design for AM Stereo Signals Using Compatible Quadrature Amplitude Modulation
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English
Abstract
Digital Signal Processing (DSP) techniques are becoming the standard for high quality digital sound on compact disks and digital audio tapes in automotive audio entertainment systems. Incorporating DSP technology to improve the quality of AM (amplitude modulation) and FM (frequency modulation) stereo radio reception assures high fidelity performance for all radio functions. This paper will only deal with the AM stereo problem since the digital FM stereo problem has been resolved and demonstrated already [1]. This paper will discuss Motorola Compatible Quadrature Amplitude Modulation (CQAM) AM stereo decoding and how it can be digitally implemented on a Motorola DSP56001. A complete description of CQAM decoding will be given including a brief overview of how the process can be performed digitally.
Authors
Citation
Funderburk, D. and Park, S., "A Digital Receiver Design for AM Stereo Signals Using Compatible Quadrature Amplitude Modulation," SAE Technical Paper 920083, 1992, https://doi.org/10.4271/920083.Also In
References
- Haug J. E. et al. “A DSP Based Stereo Decoder for Automotive Radio” SAE Technical Paper Series, # 900244 February 1990
- Starling Michael “Editorial” Broadcast Engineering February 1991
- Crutchfield E. B. NAB Engineering Handbook 7th NAB Publishing 1985
- Motorola Official AM Stereo Station Listing January 1 1991
- “Introduction to the Motorola C-QUAM®AM Stereo System” Motorola, Inc. 1985
- Lathi B. P. Modern Digital and Analog Communication Systems New York, NY Holt, Reinhart, and Winston 1983
- Park S. et al “A Novel Multi-Stage Decimation Filter Design Technique For Low Sampling Rate And High Resolution Applications” Proceedings of the Analog and Mixed Signal Design Conference Santa Clara, California Oct. 30 Nov. 1 1991
- DSP56000/DSP56001 Digital Signal Processor User's Manual , (DSP56000UM/AD) Motorola Inc. 1989