Method and apparatus for cancelling in-band energy leakage from

Details Method and apparatus for cancelling in-band energy leakage from Method and apparatus for cancelling in-band energy leakage from

1992-12-22

1995-08-22

Urban, Edward F.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455 24, 455 78, 455 82, H04B 156

Patent

active

054448646

ABSTRACT:
A method and apparatus system for cancelling a leak-through signal component generated by an interfering transmitter from a received/leak-through signal comprising a multiplier for multiplying the received/leak-through signal by a reference signal provided from the interfering transmitter. The system further includes an integrator for integrating the output of the multiplier to generate an estimate of the gain and phase of the leak-through signal component. A gain and phase adjustor, responsive to the generated gain and phase estimates, is also included for adjusting the gain and phase of the reference signal to generate a cancellation signal that is a substantially gain and phase matched estimate of the leak-through signal. The generated cancellation signal is then subtracted from the received/leak-through signal to substantially cancel the leak-through signal component.

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