Blind modulation cancellation by addition of modulated signal

Details Blind modulation cancellation by addition of modulated signal Blind modulation cancellation by addition of modulated signal

2005-10-11

2005-10-11

Vo, Nguyen T. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S063100, C455S078000

Reexamination Certificate

active

06954627

ABSTRACT:
A signal processing method, applied in a wireless communications module having a receive path, prevents a nonlinear device in the receive path from using an amplitude modulated transmit or other bleed-over signal in the receive path to modulate a non-amplitude modulated jammer signal on the receive path (or to further modulate an already amplitude modulated jammer signal). The bleed-over signal is conditioned by adding one or more amplitude modulated dummy signal(s) having an envelope that complements an envelope of the bleed-over signal, forcing the nonlinear circuit to operate linearly with respect to the jammer signal. Output of the amplifier may be filtered to remove signals having bandwidths of the dummy signal(s), bleed-over signal, jammer signal, and any intermodulation products generated by introducing the dummy signal(s).

REFERENCES:
patent: 3696429 (1972-10-01), Tressa
patent: 4475243 (1984-10-01), Batlivala et al.
patent: 4710723 (1987-12-01), Pelchat et al.
patent: 5691978 (1997-11-01), Kenworthy
patent: 6137888 (2000-10-01), McClennon et al.
patent: 6311045 (2001-10-01), Domokos
patent: 6539204 (2003-03-01), Marsh et al.
patent: 6567649 (2003-05-01), Souissi

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