Frequency spread spectrum

Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many distinct frequencies occupying a large spectral band. The changes are controlled by a code known to both transmitter and receiver.

1. What is FHSS and DSSS?
2. What is frequency spreading?
3. What is meant by spread spectrum?
4. What are the 3 varieties of spread spectrum?

What is FHSS and DSSS?

Higher signal transmission rate (up to 11 Mbps) FHSS is a robust spread spectrum technique that is suitable to employ in harsh environments. DSSS is a sensitive spread spectrum technique that is influenced by harsh environmental conditions. FHSS is suitable for single point as well as multipoint communications.

What is frequency spreading?

Frequency-hopping spread spectrum (FHSS) transmission is the repeated switching of the carrier frequency during radio transmission to reduce interference and avoid interception.

What is meant by spread spectrum?

Definitions: Telecommunications techniques in which a signal is transmitted in a bandwidth considerably greater than the frequency content of the original information. Frequency hopping, direct sequence spreading, time scrambling, and combinations of these techniques are forms of spread spectrum.

What are the 3 varieties of spread spectrum?

Frequency-hopping spread spectrum (FHSS), direct-sequence spread spectrum (DSSS), time-hopping spread spectrum (THSS), chirp spread spectrum (CSS), and combinations of these techniques are forms of spread spectrum.