Methods, devices and systems of heterogeneous time-reversal paradigm enabling direct connectivity in internet of things

A system comprising:

• a base device comprising:
• a data processor communicatively coupled with a memory configured to generate a composite downlink signal that includes heterogeneous signal components derived from heterogeneous data signals at heterogeneous data rates intended to be transmitted to heterogeneous devices having heterogeneous frequency spectrum requirements and heterogeneous data rate requirements, in which the process of generating the composite downlink signal includes:
• embedding heterogeneous location-specific signature waveforms in the heterogeneous signal components to enable different portions of a signal transmitted by the base device to converge at different heterogeneous devices at different locations that are intended to receive the respective portions, the heterogeneous location-specific signature waveforms each being associated with a respective location of a respective one of the heterogeneous devices,
• modifying a spectral distribution of the heterogeneous signal components based on information about a frequency spectrum associated with the base device and information about frequency spectrums associated with the heterogeneous devices, and
• combining the heterogeneous signal components to generate the composite downlink signal.

A system comprising:

• a base device wirelessly coupled with a set of heterogeneous devices each with heterogeneous bandwidth, heterogeneous center frequency and heterogeneous data rate, the base device comprising:
• a data processor communicatively coupled with a memory configured to:
• receive a composite uplink signal with passband bandwidth W0 that comprises heterogeneous components derived from a first uplink signal with a first heterogeneous bandwidth W1 sent from a first heterogeneous device and a second uplink signal with a second heterogeneous bandwidth W2 sent from a second heterogeneous device, wherein W0 is not smaller than both W1 and W2;
• modify a frequency distribution of a processed version of the composite uplink signal by a first amount that is dependent on a first spectral characteristic associated with the first heterogeneous device to generate a first frequency-shifted uplink signal;
• estimate first uplink data symbols at a first heterogeneous data rate sent from the first heterogeneous device based on the first frequency-shifted uplink signal and a first heterogeneous location-specific signature waveform that is associated with a first location of the first heterogeneous device;
• modify the frequency distribution of the processed version of the composite uplink signal by a second amount that is dependent on a second spectral characteristic associated with the second heterogeneous device to generate a second frequency-shifted uplink signal;
• and
• estimate second uplink data symbols at a second heterogeneous data rate sent from the second heterogeneous device based on the second frequency-shifted uplink signal and a second heterogeneous location-specific signature waveform that is associated with a second location of the second heterogeneous device.