Vehicular communication protocols with co-channel coexistence

A method, comprising:

• receiving a received RF signal, the received RF signal including a first RF signal encoding a first orthogonal frequency-division multiplexing (OFDM) symbol of a first long-term evolution (LTE) vehicle-to-everything (V2X) data packet;
• determining a legacy long training field (L-LTF) symbol using the received RF signal;
• calculating a channel estimation using the L-LTF symbol;
• determining legacy signal (L-SIG) field control bits from the received RF signal, the L-SIG field control bits including a plurality of in-phase and quadrature-phase (IQ) samples;
• generating a plurality of candidate L-SIG decoding outputs using the IQ samples and the channel estimation, wherein each candidate L-SIG decoding output of the plurality of L-SIG decoding outputs is generated by setting a different number of IQ samples in the L-SIG field control bits to zero values;
• identifying a first L-SIG decoding output of the plurality of candidate L-SIG decoding outputs;
• and
• decoding a data field from the received RF signal using the first L-SIG decoding output.

A radio frequency (RF) receiver, comprising:

• an antenna configured to receive a received RF signal, the received signal including a first RF signal encoding a first orthogonal frequency-division multiplexing (OFDM) symbol of a first long-term evolution (LTE) vehicle-to-everything (V2X) data packet;
• and
• a signal processing system electrically connected to the antenna and being configured to receive the received RF signal, the signal processing system being configured to perform steps including:
• determining a legacy long training field (L-LTF) symbol using the received RF signal,
• calculating a channel estimation using the L-LTF symbol,
• determining legacy signal (L-SIG) field bits from the received RF signal, the L-SIG field bits including a plurality of in-phase and quadrature-phase (IQ) samples,
• setting a number of IQ samples in the L-SIG field bits to zero values, wherein the number of IQ samples is determined using the channel estimation,
• generating an L-SIG decoding output using the L-SIG field bits and the channel estimation, and
• decoding a data field from the received RF signal using the L-SIG decoding output.