PROCESSING METHOD FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SIGNAL AND NETWORK DEVICE

摘要

The present invention is applicable to the communications field and provides a processing method for an orthogonal frequency division multiplexing (OFDM) signal and a network device. The processing method includes: obtaining an orthogonal frequency division multiplexing OFDM signal; multiplying, in a digital domain, the obtained OFDM signal by a simple harmonic wave whose frequency is fs to obtain a frequency shifted signal; and outputting and loading the frequency shifted signal by using a digital-to-analog conversion (DAC) to a driver and a modulator to send the frequency shifted OFDM signal.

主权项

1. A processing method for an orthogonal frequency division multiplexing (OFDM) signal, the method comprising:
multiplying, in a digital domain, a generated OFDM signal by a simple harmonic wave having frequency fs to obtain a frequency shifted OFDM signal; performing digital-to-analog conversion on the frequency shifted OFDM signal to obtain an OFDM signal after the digital-to-analog conversion; amplifying the OFDM signal after the digital-to-analog conversion by using a driver, to obtain an amplified OFDM signal; and modulating the amplified OFDM signal by using a modulator and sending a modulated OFDM signal, wherein: fs is equal to Δf/n, n is an integer greater than 1, and Δf is a frequency difference between two adjacent subcarriers for the obtained OFDM signal.