Technologies for acoustic multiple-input multiple-output (MIMO) transmission through a serial peripheral interface (SPI) bus

A phase shifting key (PSK) modulator device, the PSK modulator including one or more multiple-input multiple-output (MIMO) components, the PSK modulator being in communication with a serial peripheral interface (SPI) and a sensing device, the PSK modulator comprising:

• a MIMO Bit-to-Symbol (Bit2sym) converter configured at least to:
• receive a first SPI signal, the first signal including one or more coded information bits corresponding to at least some sensing data provided by the sensing device;
• and
• generate one or more symbols on N transmit branches based, at least in part, on the first SPI signal;
• a phased carrier generator configured at least to:
• receive a second SPI signal, the second signal including a synchronous clock signal;
• and
• determine at least one carrier frequency with one or more phases to form one or more phased carriers based, at least in part, on the second SPI signal;
• and
• a carrier modulator configured at least to:
• receive the one or more symbols on the N transmit branches from the MIMO Bit2Sym converter;
• receive the one or more phased carriers from the carrier modulator;
• and
• send at least some of the sensing data via the one or more symbols on the N transmit branches on the one or more phased carriers.

A method performed by an acoustic transmission device configured to communicate sensing data via one or more multiple-input multiple-output (MIMO) transmissions, the acoustic transmission device comprising:

• a memory, a serial peripheral interface (SPI), and a phase shifting key (PSK) modulator, the method comprising:
• providing a first SPI signal to at least one MIMO component of the PSK modulator, the first SPI signal including one or more coded information bits;
• providing a second SPI signal to the PSK modulator, the second SPI signal including a synchronous clock signal;
• generating of one or more symbols on N transmit branches based, at least in part, on the first SPI signal;
• determining at least one carrier frequency with one or more phases to form one or more phased carriers based, at least in part, on the second SPI signal;
• and
• transmitting at least some of the sensing data via the one or more symbols on the N transmit branches on the one or more phased carriers.