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A Novel Analog Photonic Method for Broadband Multipath Interference Cancellation

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2 Author(s)
John Chang ; Lightwave Communication Research Laboratory, Princeton University, Princeton, NJ, USA ; Paul R. Prucnal

A novel analog optical technique for multipath interference cancellation of broadband signals is proposed. Multiple optical compensation branches are utilized to replicate wireless multipath channel effects. The duplicated signal is subtracted from the total received signal to recover the signal of interest while suppressing interference. The proposed architecture achieved 40 dB of cancellation over 200 MHz and 50 dB over 10 MHz. The depth and broadband nature of the cancellation demonstrates the precision of optical components and the validity of our interference cancellation scheme.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:23 ,  Issue: 7 )