Transmission device, reception device, transmission method, and reception method
First Claim
1. A transmission device comprising:
- a first mapper configured to map a first bit stream of a first data series to generate a first modulated symbol stream;
a second mapper configured to map a second bit stream of a second data series to generate a second modulated symbol stream, the first modulated symbol stream and the second modulated symbol stream being representable on a complex plane extending in a first direction and a second direction perpendicular to the first direction;
a converter configured to convert the second modulated symbol stream in accordance with the first modulated symbol stream only in the first direction on the complex plane;
a superposer configured to superpose the first modulated symbol stream and the second modulated symbol stream converted by the converter, at an amplitude ratio, to generate a multiplexed signal; and
a transmitter configured to transmit the multiplexed signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmission device includes a first mapper, a second mapper, a converter, a superposer, and a transmitter. The first mapper is configured to map a first bit stream of a first data series to generate a first modulated symbol stream. The second mapper is configured to map a second bit stream of a second data series to generate a second modulated symbol stream. The first modulated symbol stream and the second modulated symbol stream are representable on a complex plane extending in a first direction and a second direction. The converter is configured to convert the second modulated symbol stream in accordance with the first modulated symbol stream only in the first direction on the complex plane. The superposer is configured to superpose the first modulated symbol stream and the second modulated symbol stream converted by the converter, at an amplitude ratio, to generate a multiplexed signal.
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Citations
26 Claims
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1. A transmission device comprising:
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a first mapper configured to map a first bit stream of a first data series to generate a first modulated symbol stream; a second mapper configured to map a second bit stream of a second data series to generate a second modulated symbol stream, the first modulated symbol stream and the second modulated symbol stream being representable on a complex plane extending in a first direction and a second direction perpendicular to the first direction; a converter configured to convert the second modulated symbol stream in accordance with the first modulated symbol stream only in the first direction on the complex plane; a superposer configured to superpose the first modulated symbol stream and the second modulated symbol stream converted by the converter, at an amplitude ratio, to generate a multiplexed signal; and a transmitter configured to transmit the multiplexed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A reception device comprising:
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a receiver configured to receive a multiplexed signal on which a first modulated symbol stream and a second modulated symbol stream are superposed at an amplitude ratio, the first modulated symbol stream being generated by mapping a first bit stream of a first data series, the second modulated symbol stream being generated by mapping a second bit stream of a second data series, the first modulated symbol stream and the second modulated symbol stream being representable on a complex plane extending in a first direction and a second direction perpendicular to the first direction; and a deriver configured to derive at least one of the first data series or the second data series from the multiplexed signal, wherein the receiver receives the multiplexed signal on which the second modulated symbol stream is converted in accordance with the first modulated symbol stream only in the first direction on the complex plane. - View Dependent Claims (14, 15, 16)
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17. A transmission method comprising:
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mapping a first bit stream of a first data series to generate a first modulated symbol stream; mapping a second bit stream of a second data series to generate a second modulated symbol stream, the first modulated symbol stream and the second modulated symbol stream being representable on a complex plane extending in a first direction and a second direction perpendicular to the first direction; converting the second modulated symbol stream in accordance with the first modulated symbol stream only in the first direction on the complex plane; superposing the first modulated symbol stream and the second modulated symbol stream, at an amplitude ratio, to generate a multiplexed signal after the second modulated symbol stream is converted; and transmitting the multiplexed signal. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A reception method comprising:
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receiving a multiplexed signal on which a first modulated symbol stream and a second modulated symbol stream are superposed at an amplitude ratio, the first modulated symbol stream being generated by mapping a first bit stream of a first data series, the second modulated symbol stream being generated by mapping a second bit stream of a second data series, the first modulated symbol stream and the second modulated symbol stream being representable on a complex plane extending in a first direction and a second direction perpendicular to the first direction; and deriving at least one of the first data series or the second data series from the multiplexed signal, wherein the second modulated symbol stream is converted in accordance with the first modulated symbol stream only in the first direction on the complex plane when the multiplexed signal is received.
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Specification