Receiving apparatus and receiving method
View Patent ↗A duplicating section duplicates a bit sequence to be input, and a 16QAM section modulates a bit sequence of a duplicating source to form a symbol, a 16QAM section modulates the duplicated bit sequence to form a symbol, an S/P section parallel converts the symbol sequence input in series, an S/P section parallel converts the symbol sequence input in series, and an IFFT section 15 provides IFFT processing to the input symbol sequence. Since each of multiple same bits duplicated by the duplicating section is included in a different symbol, each of the multiple same bits is allocated to each of multiple subcarriers each having a different frequency by IFFT processing. As a result, a multicarrier signal including the multiple same bits each having a different frequency is generated.
1. A receiving apparatus comprising:
a receiving unit configured to receive a first symbol and a second symbol, the first symbol being generated by modulating first bit information based on a corresponding relationship associating the first bit information with a first constellation position, wherein a value of the first bit information is determined based only on whether a power value in one of an I axis direction and a Q axis direction is positive or negative, the second symbol being generated by modulating the first bit information based on a corresponding relationship associating the first bit information with a second constellation position, wherein a value of the first bit information cannot be determined based only on whether a power value in one of the I axis direction and the Q axis direction is positive or negative, the first and second constellation positions being different from each other; and
a demodulating unit configured to demodulate the first symbol and the second symbol.
2. A receiving apparatus comprising:
a receiving unit configured to receive a first symbol and a second symbol, the first symbol being generated by modulating first bit information and second bit information based on a corresponding relationship associating the first bit information with a first constellation position, wherein a value of the first bit information is determined based only on whether a power value in one of an I axis direction and a Q axis direction is positive or negative, and associating the second bit information with a second constellation position, wherein a value of the second bit information cannot be determined based only on whether a power value in one of the I axis direction and the Q axis direction is positive or negative, the second symbol being generated by modulating the first bit information based on a corresponding relationship associating the first bit information with the second constellation position, wherein a value of the first bit information cannot be determined based only on whether a power value in one of the I axis direction and the Q axis direction is positive or negative, and associating the second bit information with the first constellation position, wherein a value of the second bit information is determined based only on whether a power value in one of the I axis direction and the Q axis direction is positive or negative, the first and second constellation positions being different from each other; and
a demodulating unit configured to demodulate the first symbol and the second symbol.
3. The receiving apparatus according to claim 2 , wherein:
each of the first bit information and the second bit information comprises two bits of information, and
the first symbol and the second symbol are generated with a 16 quadrature amplitude modulation (16 QAM) scheme.
4. The receiving apparatus according to claim 2 , wherein:
the receiving unit is configured to simultaneously receive the first symbol and the second symbol arranged in different carrier frequencies.
5. A receiving method implemented by a receiving apparatus comprising:
receiving, by the receiving apparatus, a first symbol and a second symbol, the first symbol being generated by modulating first bit information based on a corresponding relationship associating the first bit information with a first constellation position, wherein a value of the first bit information is determined based only on whether a power value in one of an I axis direction and a Q axis direction is positive or negative, the second symbol being generated by modulating the first bit information based on a corresponding relationship associating the first bit information with a second constellation position, wherein the value of the first bit information cannot be determined based only on whether a power value in one of the I axis direction and the Q axis direction is positive or negative, the first and second constellation positions being different from each other; and
demodulating, by the receiving apparatus, the first symbol and the second symbol.