Compressive sensing-aided lpwan mac layer

A system for communicating in a low power wide area network (LPWAN), comprising:

• a long range (LoRa) sensing device having circuitry including:
• at least one sensor configured to generate a bit stream of sensor signals;
• a first physical layer (PHY);
• a first medium access (MAC) layer;
• a compressive sensing-aided transmission sub-layer embedded within the first medium access layer;
• a first computer processing unit including a computer-readable medium comprising program instructions, executable by a first processing circuitry, to cause the first processing unit to:
• receive, at the first physical layer of a LoRa device, the bit stream of sensor signals at an incoming velocity;
• encode the bit stream to generate an encoded bit stream;
• modulate the encoded bit stream by chirp spread spectrum modulation to generate a chirp modulated encoded bit stream;
• form a first transmission packet including at least a preamble, the chirp modulated encoded bit stream and a cyclic redundancy check (CRC);
• receive the first transmission packet by the first multiple access layer (MAC) of the LoRa device;
• compress the chirp modulated encoded bit stream of the first transmission packet into sparse vectors;
• combine the sparse vectors with a linear combination of a randomly selected set of sparse vectors representing past measurements and the in-coming velocity of the bit stream to generate a payload;
• form a second transmission packet including the preamble, the payload and the cyclic redundancy check;
• transmit, by the first physical layer, the second transmission packet at a randomly selected time;
• a receiver having circuitry including:
• a second physical layer (PHY);
• a second medium access (MAC) layer;
• a sparse recovery sub-layer embedded within the second MAC layer;
• a second computer processing unit including a computer-readable medium comprising program instructions, executable by a second processing circuitry, to cause the second processing unit to:
• receive, at the second physical layer, the second transmission packet;
• de-map the transmission packet to recover a compressed, encoded bit stream;
• reconstruct, by the sparse recovery sub-layer, the compressed, encoded bit stream by recovering sparse vectors to generate a chirp spread spectrum encoded bit stream;
• demodulate the chirp spread spectrum encoded bit stream by chirp spread spectrum demodulation to generate an encoded bit stream;
• decode the encoded bit stream to remove indexing and generate an interleaved bit stream;
• de-interleave the interleaved bit stream;
• and
• decode the interleaved bit stream to recover the bit stream of sensor signals.