DEVICE FOR BROADBAND RADIO COMMUNICATIONS USING NOISE-LIKE SIGNALS Russian patent published in 2007 - IPC H04B7/00 

FIELD: radio engineering; broadband communication systems for digital data transfer using noise-like signals.

SUBSTANCE: data transfer is conducted over two channels at a time. If data transfer over second channel is no longer needed, short pulse that functions as command for changing over to single-channel mode of operation arrives at transmitter flip-flop input. In the process flip-flop output is set to zero thereby setting feedbacks of cold-mark generator in code-shaping and coincidence circuit function inhibition position. Same pulse is supplied through tracking circuit to timer that counts time equal to code mark period and enables mark formation. Mark is passed through tracking circuit and embedded in signal in the same way as second-channel data.

EFFECT: enhanced noise immunity in data transfer over main channel only while transmitting from two independent sources at a time.

1 cl, 5 dwg