US 11,700,161 B2
Multiplex of high definition radio stations
Philipp Schmid, Hackett's Cove (CA); and Brian Walker, Bedford (CA)
Assigned to NAUTEL LIMITED, Nova Scotia (CA)
Filed by Nautel Limited, Hackett's Cove (CA)
Filed on Sep. 25, 2019, as Appl. No. 16/582,892.
Application 16/582,892 is a continuation of application No. 15/565,329, granted, now 10,469,301, previously published as PCT/CA2016/050406, filed on Apr. 8, 2016.
Claims priority of application No. CA 2887751 (CA), filed on Apr. 10, 2015.
Prior Publication US 2020/0035892 A1, Jan. 30, 2020
Int. Cl. H04L 27/26 (2006.01); H01L 33/00 (2010.01); H01L 33/48 (2010.01); H01L 33/60 (2010.01); H01L 33/62 (2010.01); H01L 33/64 (2010.01); H04H 20/00 (2009.01)
CPC H04L 27/2621 (2013.01) [H01L 33/005 (2013.01); H01L 33/486 (2013.01); H01L 33/60 (2013.01); H01L 33/62 (2013.01); H01L 33/642 (2013.01); H04H 20/00 (2013.01); H04L 27/2623 (2013.01); H04H 2201/12 (2013.01); H04H 2201/183 (2013.01); H04L 27/2624 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A digital radio receiver configured to:
receive and demodulate a radio frequency signal at a receiver antenna, wherein the radio frequency signal comprises a combined multiplex signal having a plurality of different station signals each with symbols that are time aligned to each other;
track symbols using a single symbol tracking loop that applies equally to all stations in the combined multiplex signal;
apply a wide bandwidth Fast Fourier Transform (FFT) to the combined multiplex signal;
correct a symbol-to-symbol rotating phase offset before applying a frequency domain correction; and
produce an output signal for further station data decoding.