Weve been using direct sequence spread spectrum for data transmission. How does algorithmic frequency hopping compare to direct sequece, and how does it work?
Spread spectrum radio modems typically use one of two spreading methods: direct sequence or frequency hopping. Direct sequence continuously spreads data across a wide portion of the frequency band. If a frequency is not available because other equipment or too much noise occupies the band then that data is lost. In a high-noise environment, the reliability of the data is dependent on the signal-to-noise ratio. The percentage of frequencies unavailable represents the percentage of data that will be lost.
Related Questions
- Weve been using frequency hopping spread spectrum (FHSS) for data transmission. How does direct sequence spread spectrum (DSSS) compare to FHSS?
- How does direct sequence spread spectrum (DSSS) differ from frequency hopping spread spectrum (FHSS)?
- Why was frequency hopping chosen over other approaches to spread spectrum?
