H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/3, 325/45
H04B 1/10 (2006.01) H04B 1/12 (2006.01) H04B 1/69 (2006.01) H04J 13/00 (2006.01)
Patent
CA 1193669
Abstract of the Disclosure A noise coded communications system which eliminates continuous wave (CW) interference while providing no loss or degradation of the desired signal includes the variable delay line and a linear adder coupled to the output of the front end section of a multiplexed noise coded receiver which further includes an active coherent detector comprised of a multiplier and an integrator. The variable delay line provides a delay whose order of magnitude is substantially equal to the bit width of the multi-bit binary noise code utilized and is further varied until any CW interference signal received along with the noise coded signal is shifted in phase by 180° and inverted with respect to the input interference signal. The inverted interference signal and the non-inverted input interference signal are summed together in the linear adder whereupon a cancellation of the interference signal occurs while providing no degradation in the desired signal.
434805
Aspila Kalevi P.
The Government Of The United States As Represented By The Secret
LandOfFree
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