Patent ID: 6901242
Filing Date: 2005-05-31
Classification: H04B,H04H,H04L

Abstract:
1. A receiver for an in-band on-channel broadcast signal including a first plurality of subcarriers positioned in upper and lower sidebands of a broadcast channel and orthogonal frequency division modulated by a first digital signal, and a second plurality of subcarriers orthogonal frequency division modulated by a second digital signal, wherein said second digital signal is delayed with respect to said first digital signal and has a lower data rate than said first digital signal, said receiver comprising: means for demodulating said first plurality of subcarrier to produce a first demodulated signal; means for demodulating said second plurality of subcarriers to produce a second demodulated signal; means for delaying said first demodulated signal with respect to said second demodulated signal; means for using said second demodulated signal to produce an initial output signal; and means for blending said first and second demodulated signals to produce a subsequent output signal.