Spread

BER formula for chirp spread spectrum BPSK modulation scheme

BER formula for chirp spread spectrum BPSK modulation scheme
  1. What is spread spectrum modulation?
  2. What is spread spectrum technique?
  3. Which of the following modulation techniques spreads a signal over a larger frequency band?
  4. What is the purpose of designing a spread spectrum system?

What is spread spectrum modulation?

A collective class of signaling techniques are employed before transmitting a signal to provide a secure communication, known as the Spread Spectrum Modulation. The main advantage of spread spectrum communication technique is to prevent “interference” whether it is intentional or unintentional.

What is spread spectrum technique?

In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.

Which of the following modulation techniques spreads a signal over a larger frequency band?

Spreading operation spreads the signal energy over a wider frequency bandwidth. Spread-spectrum modulation is applied on top of a conventional modulation such as BPSK or direct conversion.

What is the purpose of designing a spread spectrum system?

Secure communication: In the spread spectrum technique, pseudo-random noise is used to modulate the signal either in the time domain or in the frequency domain. The random nature of the signal randomizes the signal transmitted and establishes secure transmission compared to analog wireless communication systems.

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