Method and apparatus for canceling spread-spectrum noise

An apparatus comprising a spread-spectrum noise canceller, the spread-spectrum noise comprising:

• (a) receiving means for receiving a spread-spectrum signal having a first and a second component from over a communication channel, the first component being received at a different time from the second component, the spread-spectrum signal including a known signal;
• (b) determining means, operatively coupled to the receiving means, for determining a received phase and a received amplitude for the first and the second components of a received spread-spectrum signal;
• (c) demodulating means, operatively coupled to the receiving means, for demodulating the received spread-spectrum signal;
• and
• (d) noise canceling means, operatively coupled to the determining means and the demodulating means, for canceling a portion of a spread-spectrum noise signal in the received spread-spectrum signal by:
• (i) generating an estimated signal by spreading the known signal at the second component received phase with the known signal at the first component received phase, integrating the spread known signal over a predetermined time, and adjusting a gain of the integrated spread known signal as a function of the received amplitudes of the first and the second components;
• and
• (ii) processing the known signal out of the received spread-spectrum signal by subtracting the estimated signal from the demodulated received spread-spectrum signal.

A spread-spectrum signal processing method, comprising:

• (a) determining a received phase and a received amplitude for a first and second component of a received spread-spectrum signal, the first component being at a different time from the second component, the spread-spectrum signal including a known signal;
• and
• (b) canceling a portion of a spread-spectrum noise signal in the received spread-spectrum signal by:
• (i) generating an estimated signal by spreading the known signal at the second component received phase with the known signal at the first component received phase and adjusting a gain of an integrated form of the spread known signal as a function of the received amplitudes of the first and the second components;
• and
• (ii) processing the known signal out of the received spread-spectrum signal by subtracting the estimated signal from a demodulated form of the received spread-spectrum signal.

A spread-spectrum signal processing method, comprising:

• (a) receiving a spread-spectrum signal having a first and a second component from over a communication channel, the first component being received at a different time from the second component, the spread-spectrum signal including a known signal;
• (b) determining a received phase and a received amplitude for the first and the second components of a received spread-spectrum signal;
• (c) demodulating the received spread-spectrum signal;
• and
• (d) canceling a portion of a spread-spectrum noise signal in the received spread-spectrum signal by:
• (i) generating an estimated signal by spreading the known signal at the second component received phase with the known signal at the first component received phase, integrating the spread known signal over a predetermined time, and adjusting a gain of the integrated spread known signal as a function of the received amplitudes of the first and the second components;
• and
• (ii) processing the known signal out of the received spread-spectrum signal by subtracting the estimated signal from the demodulated received spread-spectrum signal.