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US 10,756,936 B2Granted
Signal transmitting apparatus
AssigneeMitsubishi Electric Corporation
InventorsYasunori Kato, Hideyuki Awazu
Life of this patent
Estimating the term…
Abstract
A weight switching unit outputs weights for modulation signals so that, on a constellation diagram in the complex plane, a position of a signal point in a communication direction corresponds to that of the modulation symbol, and the position of the signal point in a non-communication direction becomes different from that of the signal point in the communication direction. Weight applying units apply, to the modulation signals emitted from antennas, weights for each modulation symbol output from the weight switching unit.
Claims6
A signal transmitting apparatus comprising:
- an array antenna constituted by a plurality of element antennas;
- a modulation signal generator to generate modulation signals emitted from the array antenna;
- a weight switcher to select and output weights for the modulation signals so that, on a constellation diagram in a complex plane for the modulation signals emitted from the array antenna, a position of a signal point in a communication direction corresponds to a position of a modulation symbol generated by the modulation signal generator, and the signal point in a non-communication direction becomes the signal point corresponding to a different signal point among a plurality of the signal points that have equal amplitudes and phase angle differences with the adjacent signal points falling within a set range;
- and
- a weight applier to apply, to the modulation signals emitted from the array antenna, weights for each modulation symbol output from the weight switcher.
2 more elements
Dependencies are inferred from the claim text.