Patent ID: 11528178

Abstract:
A resource-efficient modulation scheme includes both conventional and zero-amplitude states. The conventional states in 5G/6G are amplitude- or phase-modulated, or both, whereas the zero-amplitude states have zero or substantially zero amplitude. By including modulation states with zero amplitude in the modulation scheme, transmitters can transmit a message more compactly, and using less time or bandwidth, and with a substantial decrease in emitted energy. For example, in a phase-modulation scheme such as BPSK or QPSK, a zero state represents an additional modulation state with zero transmitted amplitude. In a modulation scheme with I and Q branches in quadrature, each branch is separately amplitude modulated, plus additional states with zero amplitude in one or both branches, for different effects. For example, 16QAM with nine additional zero-amplitude states totals 25 available modulation states, resulting in 36% reduction in message size and 44% reduction in transmitted energy. Low-complexity demodulation with fault detection are also disclosed.