US 12,335,086 B2
Spread-spectrum video transport with quadrature amplitude modulation
Ofir Gilat, Givatayim (IL)
Assigned to HYPHY USA Inc., San Jose, CA (US)
Filed by HYPHY USA INC., San Jose, CA (US)
Filed on Jun. 28, 2022, as Appl. No. 17/851,821.
Claims priority of provisional application 63/318,204, filed on Mar. 9, 2022.
Claims priority of provisional application 63/220,587, filed on Jul. 12, 2021.
Prior Publication US 2023/0012044 A1, Jan. 12, 2023
Int. Cl. H04L 27/36 (2006.01); H04B 1/69 (2011.01); H04L 27/38 (2006.01)
CPC H04L 27/36 (2013.01) [H04B 1/69 (2013.01); H04L 27/38 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A transmitter for transmitting input digital samples, said transmitter comprising:
an encoder that continuously inputs an input vector of N digital samples and encodes said N digital samples using N orthogonal spreading codes each of length L in order to output L digital levels, each of said codes used with one of said N digital samples and wherein L>=N>=2;
quadrature amplitude modulation (QAM) mapping circuitry that receives a continuous stream of said L digital levels from said encoder and maps said L digital levels to points in a QAM constellation to obtain in-phase (I) components and out-of-phase (Q) components, wherein said mapping circuitry maps each of said L digital levels to one of said points in said QAM constellation to obtain said in-phase (I) component and out-of-phase (Q) components; and
QAM circuitry that receives said I and Q components and performs quadrature amplitude modulation using said I and Q components to produce an electromagnetic signal on an electromagnetic pathway representing said continuous input of digital samples.