Patent ID: 11902078
Assignee: CONSTELLATION DESIGNS, LLC
Field: Medical technology (Instruments)
Classification: CPC H  A  G | IPC H

Claim 23:
24. A communication system, comprising:
a receiver capable of receiving signals via a communication channel having a channel signal-to-noise ratio (SNR), wherein the receiver comprises:
a demodulator capable of demodulating a received signal into a demodulated signal;
a demapper, coupled to the demodulator, capable of determining likelihoods using the demodulated signal and a non-uniform quadrature amplitude modulation 1024-point symbol constellation (NU-QAM 1024); and
a decoder, coupled to the demapper, capable of using likelihoods determined by the demapper to provide a sequence of received bits based upon a Low Density Parity Check (LDPC) code;

wherein the NU-QAM 1024 constellation comprises an in-phase component and a quadrature component, where each component comprises 32 levels of amplitude such that the amplitudes scaled by a scaling factor are within 0.15 from the following set of amplitudes: −34.448, −30.817, −27.660, −24.807, −22.185, −19.751, −17.476, −15.333, −13.305, −11.366, −9.509, −7.701, −5.953, −4.220, −2.533, −0.834, 0.833, 2.533, 4.220, 5.953, 7.701, 9.509, 11.366, 13.305, 15.333, 17.476, 19.752, 22.186, 24.808, 27.660, 30.818, and 34.449.