| 摘要 |
A method for sending and receiving a signal is disclosed, and a corresponding device and system. The method includes performing constellation mapping on a data stream to obtain a mapped signal, and performing pre-filtering on the mapped signal to convert the mapped signal into a narrowband signal filtered signal. The pre-filtering is finite impulse response filtering. A bandwidth of the narrowband signal filtered signal is less than bandwidth of the mapped signal, and the narrowband signal filtered signal is a baud rate signal. The method also includes performing waveform forming according to the narrowband signal filtered signal to obtain a shaped signal, and performing digital-to-analog conversion on the shaped signal to convert a shaped second signal into an analog signal, and sending the analog signal. |
| 主权项 |
1. A method, comprising:
performing, by a transmitter, constellation mapping on a data stream to obtain a mapped signal; performing, by the transmitter, pre-filtering on the mapped signal to convert the mapped signal into a first filtered signal, wherein the pre-filtering is finite impulse response filtering, a bandwidth of the first filtered signal is less than a bandwidth of the mapped signal, and the first filtered signal is a baud rate signal; performing, by the transmitter, waveform forming according to the first filtered signal to obtain a shaped signal; performing, by the transmitter, digital-to-analog conversion on the shaped signal to obtain an analog signal; and sending, by the transmitter, the analog signal. |
