The mother of wifi is Hedy Lamarr.
In early 1940, Hedy Lamarr and piano composer George Antheil designed an aircraft navigation system. George conceived a pair of paper rolls, placed inside the aircraft and the torpedo, to specify the sequence of changing frequencies. With Heidi and George's research and the help of other scientists, their work was gradually completed.
In 1941, they completed this research and applied for a patent for their "frequency hopping" device design. Radio "frequency hopping technology" is the "spread spectrum communication technology" of the 21st century, that is, Today's wifi is the prototype, so Hedy Lamarr is also called the mother of wifi.
Character achievements:
In 1985, based on "frequency hopping" technology, a little-known small company in the United States was established in San Diego and quietly developed a CDMA wireless digital communication system. . This company is Qualcomm. Qualcomm has become a Fortune 500 company in the 21st century, but Heidi, the inventor of its theory, has almost been forgotten.
In 1997, when CDMA-based communication technology began to enter public life, the scientific community remembered Heidi. The Electronic Frontier Foundation of the United States awarded the first application for this patent fifty years ago. Hedy Lamarr's invention was awarded the "Electronic Frontier Foundation-Pioneer Award".
This award recognized Heidi's contribution to computer communications. Scientists respectfully called Heidi the mother of CDMA. She was already 83 years old at the time.