US 12,413,458 B2
Frequency modulation in a communications network
Minheng Shan, Germantown, MD (US); and Kumud Patel, Germantown, MD (US)
Assigned to Hughes Network Systems, LLC, Germantown, MD (US)
Filed by Hughes Network Systems, LLC, Germantown, MD (US)
Filed on Oct. 27, 2023, as Appl. No. 18/496,166.
Prior Publication US 2025/0141721 A1, May 1, 2025
Int. Cl. H04L 25/49 (2006.01); H04B 1/40 (2015.01)
CPC H04L 25/4921 (2013.01) [H04B 1/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a processor and a memory couplable to a receiver, the processor configured to execute instructions stored in the memory to:
position a first point in a grid space that represents an unmodulated signal component of a first signal based on a characteristic of a frequency modulator generating the first signal, the frequency modulator having a first input to receive data from a baseband source and having a second input to receive a second signal from a local oscillator;
apply a first offset signal to the frequency modulator;
determine, in the grid space, a first angle between a first line segment from a reference point to the first point and a second line segment from the first point to a point representing the first offset signal applied to the frequency modulator; and
apply a second offset signal, based on the first angle, to compensate for the characteristic of the frequency modulator.