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An optical transmitter/receiver system for wireless voice communication

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2 Author(s)
Schreyer, R.K. ; Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA ; Sonek, G.J.

The design of an optical transmitter/receiver system, suitable as an educational project for the demonstration of low-noise wireless voice communication in the laboratory, is described. The system, having a range in excess of 8 m, uses a VCO (voltage-controlled oscillator), operating at the center frequency of 100 kHz, to achieve voice data encoding. Optical decoding at the receiver is performed using a conventional phase-locked loop (PLL) circuit. As an optoelectronics design project, the system successfully integrates the concepts of free-space optical communication, frequency modulation, and analog electronics design, which are common to infrared (IR) remote control devices

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Education, IEEE Transactions on  (Volume:35 ,  Issue: 2 )