Spread Spectrum Techniques are methods used in telecommunications to spread a signal over a wider bandwidth than the minimum required. This approach enhances the signal's resistance to interference and eavesdropping, making it more secure and reliable. Two common types of spread spectrum techniques are Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS). In FHSS, the signal rapidly changes frequencies within a designated range, while in DSSS, the signal is multiplied by a pseudo-random noise sequence, spreading it across the frequency spectrum. These techniques are widely used in various applications, including Wi-Fi, Bluetooth, and military communications, to improve performance and security.