Frequency-hopping spread spectrum
Espectro ensanchado por salto de frecuencia
- Date
- 1942 · confidence high
- Place
- Los Angeles, California, United States
- Credited to
- Hedy Lamarr and George Antheil
- Field
- Communication
What it is
A radio transmission method that rapidly changes the carrier frequency among many frequencies according to a code shared by transmitter and receiver, devised to avoid interference and eavesdropping; patented in 1942 as a torpedo-guidance system.
Actress Hedy Lamarr and composer George Antheil patented it in 1942; the US Navy did not adopt it until the 1960s.
What it led to
- Code-division multiple access (CDMA) communications
- Modern Wi-Fi and Bluetooth