Estimating orthogonal frequency division multiplexing channels using frequency modulated continuous waveforms

A method for wireless communication at a second wireless device, comprising:

• generating a frequency modulated continuous waveform signal, the frequency modulated continuous waveform signal for estimation, by a first wireless device, of an orthogonal frequency division multiplexing channel;
• transmitting the frequency modulated continuous waveform signal via the orthogonal frequency division multiplexing channel;
• and
• communicating orthogonal frequency division multiplexing signals with the first wireless device via the orthogonal frequency division multiplexing channel based at least in part on the estimation of the orthogonal frequency division multiplexing channel.

An apparatus for wireless communication, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive a first frequency modulated continuous waveform signal via an orthogonal frequency division multiplexing channel;
• generate a second frequency modulated continuous waveform signal based at least in part on a set of frequency modulated continuous waveform parameters that are associated with the first frequency modulated continuous waveform signal;
• and
• estimate the orthogonal frequency division multiplexing channel based at least in part on samples of a combined frequency modulated continuous waveform signal in a time domain, the combined frequency modulated continuous waveform signal comprising a combination of the first frequency modulated continuous waveform signal and the second frequency modulated continuous waveform signal.