Patent ID: 11889326
Assignee: CONSTELLATION DESIGNS, LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 20:
21. A method or receiving data, comprising:
receiving a signal at a receiver via a communication channel having a channel signal-to-noise ratio (SNR);
demodulating the received signal into a demodulated signal using the receiver;
determining likelihoods using the receiver based upon the demodulated signal and a symbol constellation selected from a plurality of symbol constellations that includes a group of symbol constellations that each have the same number of constellation points and comprise a ring of constellation points that are unequally spaced along the ring; and
providing a sequence of received bits from the receiver based upon the determined likelihoods and a low density parity check (LDPC);
wherein labels and spacing of the constellation points in each of the symbol constellations in the group of symbol constellations are arranged such that the symbol constellation is capable of providing a given capacity at a reduced signal-to-noise ratio as compared to a similar symbol constellation that differs only in that the constellation points in the ring are equally spaced around the ring.