Acousto-optic channel equalization for digital communications

Christopher Scott Anderson

doi:10.1117/12.138414

2 December 1992 Acousto-optic channel equalization for digital communications

Christopher Scott Anderson

Proceedings Volume 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III; (1992) https://doi.org/10.1117/12.138414
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

Digital communication systems use complex modulation schemes that require powerful signal- processing techniques to correct chemical distortions and to minimize bit error rates. In this paper, acousto-optic processors are used, in conjunction with adaptive digital equalizers, to reduce the bit error rate of a microwave digital radio receiver. The acousto-optic processor implements an inverse channel filter that is rapidly adaptable to time varying distortions. A specific architecture is identified and a laboratory system is tested to very the ability of the processor to track and correct time-varying channels. Computer simulations are used to show that the hybrid acousto-optic and digital equalizer allows a four-fold increase in the modulation capacity of radio, relative to all digital equalization, while improving the bit error rate performance.

Citation Download Citation

Christopher Scott Anderson "Acousto-optic channel equalization for digital communications", Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); https://doi.org/10.1117/12.138414

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