MIMO technology in wireless standards MIMO technology delivers on the promise of higher data rates by improving spectral efficiency. Because MIMO technology has the potential to dramatically improve the performance of wireless systems, many standards committees have recently adopted or are considering adopting MIMO and multi-antenna technologies. Multi-antenna systems make full use of spatial diversity by placing separate antennas in a dense multi-path scattering environment. These systems can be implemented in many different ways to achieve diversity gain against signal fading, or to achieve capacity improvements. Generally speaking, there are three kinds of multi-antenna technology. The first class aims to increase power efficiency by maximizing "spatial diversity". Such techniques include delay diversity, space-time block code (STBC) and space-time grid code (STTC). What is a space-time Block Code (STBC)? Space-time block codes are a technique used in wireless communications to send multiple copies of a data stream over multiple antennas and to utilize various received data versions to improve the reliability of data transmission. The transmitted signal must pass through a potentially difficult environment with scattering, reflection, refraction, etc., and may then be further destroyed by thermal noise in the receiver, meaning that some copies of the received data will be better than others. This redundancy results in a higher chance of being able to decode the received signal correctly using one or more received copies. In effect, space-time coding combines all copies of the received signal in an optimal way to extract as much information as possible from each copy. And now with the gradual maturity of WiFi technology, WiFi products are also being upgraded, and the latest WiFi7 is slowly spreading in the market, more WiFi projects will need more WiFi technology. WiFi7 technology also uses the space-time block codes described above, and this aspect of the technology is more mature. Then the WiFi7 products on the market can be used in industrial projects, mostly using Qualcomm chips, such as IPQ9574 and IPQ9554, which are mainly used for the development and design of WiFi7 motherboard chips. The chip used by the WiFi7 card is more QCN9274 or QCN6274 to meet the needs of more customers for WiFi bands. Enhanced product performance, better data transfer. What are the advantages of WiFi7? Faster speed: WiFi 7 will offer higher data transfer rates, which are expected to be three to four times faster than WiFi 6. This means faster download and upload speeds, a smoother video streaming experience, and faster file transfer speeds. Lower latency: WiFi 7 will reduce network latency and make Internet connections more responsive. This is important for real-time gaming, video calling, and other applications that require instant feedback. Better network capacity: WiFi 7 will enable more devices to connect to the same network at the same time without slowing down speed or performance. This is very beneficial for high-density networking environments such as homes, offices and public places. Better security and privacy protection: WiFi 7 will introduce stronger encryption and authentication mechanisms to provide higher security and privacy protection. This will help prevent unauthorized access and data breaches. Overall, WiFi 7 will bring us faster, more stable, and more secure wireless network connectivity, providing better performance and experience for a variety of applications and devices.