Bandwidth for a chirp spread spectrum

CSS operates in the 2.45 GHz ISM band and achieves a maximum data rate of 2 Mbps.

1. What is the bandwidth of spread spectrum?
2. What is chirp spread spectrum modulation?
3. How does chirp modulation work?
4. What does spread spectrum require?

What is the bandwidth of spread spectrum?

Wireless LAN

The 802.11 and the 802.11b standards use the 2.4 GHz frequency band and use the Direct Sequence Spread Spectrum Communication System. Their maximum communication speeds are 2 Mbps and 11 Mbps, respectively, and the frequency bandwidth of the channels are arranged partially duplicated to one another.

What is chirp spread spectrum modulation?

Chirp, or Chirp Spread Spectrum (CSS), is a long-range radio-frequency technology for wireless communication that can be leveraged to detect and track the location of people, assets, and devices both in and outdoors, across large-scale facilities.

How does chirp modulation work?

Chirp modulation

This type of modulation employs sinusoidal waveforms whose instantaneous frequency increases or decreases linearly over time. These waveforms are commonly referred to as linear chirps or simply chirps. Hence the rate at which their frequency changes is called the chirp rate.

What does spread spectrum require?

Spread Spectrum refers to a system originally developed for military applications, to provide secure communications by spreading the signal over a large frequency band. Figure 1 represents a narrow band signal in the frequency domain. These narrowband signals are easily jammed by any other signal in the same band.