Patent ID: 9100254
Filing Date: 2015-08-04
Classification: H04L

Abstract:
1. An apparatus for transmitting a radio frequency (RF) signal, comprising: a frequency-domain modulator adapted to generate a frequency-domain modulated signal with a first sampling rate; an inverse fast Fourier Transform (IFFT) module adapted to convert the frequency-domain modulated signal to a time-domain modulated signal at a second sampling rate that is greater than the first sampling rate, wherein the second sampling rate is chosen toward a desired sampling rate for a transmitted signal; and a digital-to-analog converter (DAC) adapted to convert the time-domain modulated signal from a digital domain to an analog time-domain modulated signal at a third sampling rate, wherein the third sampling rate is substantially the same as the second sampling rate if the second sampling rate is substantially the same as the desired sampling rate for the transmitted signal, or the third sampling rate is greater than the second sampling rate if the second sampling rate is lower than the desired sampling rate for a transmitted signal, such that to achieve the desired sampling rate for the transmitted signal, and the RF signal is based on the analog time-domain modulated signal.