×

Amplitude and phase matching for layered modulation reception

  • US 7,474,710 B2
  • Filed: 10/03/2003
  • Issued: 01/06/2009
  • Est. Priority Date: 10/25/2002
  • Status: Active Grant
First Claim
Patent Images

1. A method of receiving layered modulation signals, comprising:

  • receiving a layered modulation signal including an upper layer signal and a lower layer signal;

    demodulating and decoding the upper layer signal from the received layered modulation signal;

    estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal;

    reconstructing a substantially ideal upper layer signal from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal;

    subtracting the reconstructed ideal upper layer signal from the received layered modulation signal to produce the lower layer signal for processing.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×