Automatic gain control symbol partial use for decoding

A demodulator apparatus, comprising:

• an automatic gain controller (AGC) configured to scale a received signal having a plurality of subframes;
• a fast Fourier transform (FFT) device configured to transform the received signal into a frequency domain signal;
• a physical Sidelink channel configured to decode the frequency domain signal, the physical Sidelink channel including
• an inverse discrete Fourier transform (IDFT) device configured to transform a data subframe to a pseudo time domain and
• a symbol controller configured to determine a location of invalid pseudo time domain samples in the subframe corresponding to a location of invalid time domain samples in the scaled subframe and output an updated data subframe, wherein the physical Sidelink channel further processes the updated data subframe to produce demodulated data and the symbol controller is configured to discard invalid pseudo time domain samples and recover valid pseudo time domain samples to produce an updated data subframe.

A method, comprising:

• receiving a data subframe having a plurality of symbols;
• scaling the received data subframe:
• transforming the scaled subframe into a frequency domain with a Fast Fourier Transform (FFT):
• transforming the frequency domain subframe into a pseudo time domain with an Inverse Discrete Fourier Transform (IDFT):
• determining, by way of a system controller, a location of invalid pseudo time domain samples in the data subframe corresponding to a location of invalid time domain samples in the scaled subframe;
• discarding, by way of the system controller, invalid pseudo time domain samples;
• and
• recovering valid pseudo time domain samples to produce an updated data subframe;
• and
• processing the updated data subframe to produce demodulated data.