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US 2026/0189294 A1Published application
Signal generating method and signal generating device
AssigneeSun Patent Trust
InventorsYutaka MURAKAMI, Tomohiro KIMURA, Mikihiro OUCHI
Life of this patent
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Abstract
A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
Claims2
A transmitting apparatus comprising:
- at least one processor configured to generate a first signal and a second signal from a same data on which error correction coding has been performed;
- and
- a receiver configured to receive control information, wherein
- the at least one processor is further configured to:
- turn on or off a phase change only on the second signal to be transmitted according to the control information;
- and
- control a first transmitter and a second transmitter to transmit the first signal and the second signal in a predetermined frequency band at a same time, respectively, the first transmitter and the second transmitter being physically separate devices from the transmitting apparatus;
- wherein, when the phase change is turned on, the phase change comprises applying, on a per-subcarrier basis, a phase rotation to the second signal.
5 more elements
Dependencies are inferred from the claim text.