Which technique uses a wider bandwidth and code synchronization to recover data from spread-spectrum signals?

Which technique uses a wider bandwidth and code synchronization to recover data from spread-spectrum signals?

• A. Spread Spectrum Techniques
• B. Statistical Techniques
• C. Invisible Ink
• D. Cover Generation Techniques

Answer: (A)

Spread-spectrum techniques spread the signal across a wider bandwidth using a pseudorandom spreading code, and the receiver must achieve code synchronization to despread the signal and recover the original data. This code-aligned despreading is the key step that retrieves the data from the wideband signal. The broader bandwidth and the need for precise code timing distinguish spread-spectrum methods from the other options, which don’t involve spreading a signal or using a spreading code to recover data.

Spread-spectrum techniques spread the signal across a wider bandwidth using a pseudorandom spreading code, and the receiver must achieve code synchronization to despread the signal and recover the original data. This code-aligned despreading is the key step that retrieves the data from the wideband signal. The broader bandwidth and the need for precise code timing distinguish spread-spectrum methods from the other options, which don’t involve spreading a signal or using a spreading code to recover data.