ZiFiSense, Socionext and Techsor have completed final specifications for the next-generation ZETA communication standard that incorporates the "Advanced M-FSK modulation" method.
ZiFiSense is the founder of the LPWA (Low Power Wide Area) standard ZETA, and Techsor is the representative company for the ZETA Alliance in Japan. The three companies have finalized specifications of the new standard and will conduct demonstration tests aiming at practical uses and commercialization of the standard. Socionext plans to prototype a communication SoC that is compatible with the new standard by March 2022, with mass production scheduled to begin by the end of 2022.
LPWA is a wireless communication technology standard suitable for IoT applications. ZETA features bi-directional communication and communication hopping through relays, providing a distinct advantage over other LPWA standards for use in buildings, as well as agricultural and fishing areas that are difficult to reach with radio waves.
The newly developed ZETA communication standard is compatible with the latest "Advanced M-FSK modulation" and achieves a transfer rate 20 times or more with a sensitivity improvement of 10 dB or more compared with conventional ZETA that uses 2FSK modulation. The latest ZETA version enables a communication distance of 3 to 5 km from an object moving at 60 km per hour. Socionext's unique RF, digital modulation and demodulation technology provides special encoding processing such as error correction and multi-level modulation with low power consumption.
The "Advanced M-FSK modulation" method changes from 2FSK to multi-level modulation, such as 64 FSK, and improves the communication speed. The effect of increased data volume due to error correction and repetition is reduced by faster transmission speed obtained by multi-level modulation, and the sensitivity can be improved even though the effective transmission speed is the same as the conventional method. This standard is backward compatible and can communicate with existing ZETA equipment.
Existing LPWA solutions have both advantages and disadvantages in terms of speed, sensitivity, and tolerance to mobility,