Wireless Sensor Networks

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Questions and Answers

What is the radio spectrum?

The part of the electromagnetic spectrum allocated by ITU for radio communications, ranging from 8.3KHz to 3 THz.

What is the relationship between frequency and wavelength in wireless links?

The relationship is given by λ = c/f, where λ is the wavelength, f is the frequency, and c is the speed of light.

What are some examples of frequency bands and their applications in wireless communication?

UHF (300-3000MHz) for WLAN, GSM/GPRS; SHF (3-30GHz) for radio astronomy, microwaves, WLAN, satellites communications, and modern mobile telephony.

How is the radio spectrum usage regulated?

The usage of the radio spectrum varies with national regulations. Some bands are reserved, some are licensed, and some are open/unlicensed. Signup and view all the answers

What is the ISM band and its significance for WSN applications?

The ISM band is free to use, and it is significant for WSN applications as manufacturers exploit this band at 2.4GHz and 5.8GHz for coexistence with WiFi devices. Signup and view all the answers

What is the radio spectrum and what is it allocated for?

The radio spectrum is the part of the electromagnetic spectrum allocated by ITU for radio communications, ranging from 8.3KHz to 3 THz. Signup and view all the answers

What is the relationship between frequency and wavelength in wireless links?

The relationship between frequency (f) and wavelength (λ) is given by the formula λ = c/f, where c is the speed of light. Signup and view all the answers

What are some examples of frequency bands and their applications in wireless communication?

Examples of frequency bands and their applications include UHF (300-3000MHz) for WLAN, GSM/GPRS, and SHF (3-30GHz) for radio astronomy, microwaves, WLAN, satellites communications, modern mobile telephony, and WSN. Signup and view all the answers

What is the significance of the ISM band for WSN applications?

The ISM band, which is free to use, is significant for WSN applications as manufacturers exploit the 2.4GHz and 5.8GHz bands for coexistence with WiFi devices. Signup and view all the answers

How is the radio spectrum usage regulated?

The radio spectrum usage is regulated through bands that are subject to national regulations, reserved, licensed, or open/unlicensed, and the availability of certain frequency ranges varies with respect to national regulations and regions. Signup and view all the answers