Transmission method, reception method, transmitter apparatus, and receiver device

摘要

A polarization state of a transmission signal can be changed at a high speed based on a symbol-rate By switching a first switch, a second switch, and a third switch with time, one of an X-polarized wave_I-signal as a Y-polarized wave_I-signal, a signal caused by performing logical inversion for an X-polarized wave_I-signal, an X-polarized wave_Q-signal and a signal caused by logical inversion for an X-polarized wave_Q-signal is input to a second modulator. Further, by switching the first switch, the second switch and the third switch with time, the second modulator is input one of the X-polarized wave_I-signal as the Y-polarized wave_Q-signal, the X-polarized wave_I-signal, the signal caused by performing logical inversion for the X-polarized wave_I-signal, the X-polarized wave_Q-signal and the signal caused by performing logical inversion for the X-polarized wave_Q-signal. Thereby, a polarization state of a transmission signal can be changed at high speed based on a symbol-rate speed.

主权项

1. A transmission method comprising:
a step of generating a first signal series and a second signal series; a step of modulating a first polarized wave using the first signal series and a second polarized wave orthogonal to the first polarized wave using the second signal series; and a step of performing polarization multiplexing of the modulated first polarized wave and the modulated second polarized wave, wherein the step of generating includes a switching step that selects at least two steps from a first step that generates the second signal series in which a signal identical to an in-phase component of the first signal series is determined as an in-phase component of the second signal series and a signal identical to a quadrature-phase component of the first signal series is determined as a quadrature-phase component of the second signal series, a second step that generates the second signal series in which a signal identical to the quadrature-phase component of the first signal series is determined as an in-phase component of the second signal series and a signal caused by performing logical inversion of an in-phase component of the first signal series is determined as a quadrature-phase component of the second signal series, a third step that generates the second signal series in which a signal caused by performing logical inversion of an in-phase component of the first signal series is determined as an in-phase component of the second signal series and a signal caused by performing logical inversion of a quadrature-phase component of the first signal series is determined as a quadrature-phase component of the second signal series, and a fourth step that generates the second signal series in which a signal caused by performing logical inversion of a quadrature-phase component of the first signal series is determined as an in-phase component of the second signal series and a signal identical to an in-phase component of the first signal series is determined as a quadrature-phase component of the second signal series, and the switching step applies said at least two steps to at least part of each period being divided by a predetermined length by alternately switching every each period.