What does a spread spectrum technique achieve in wireless communication?

A spread spectrum technique spreads a signal over a wider bandwidth, which significantly enhances its resilience against various forms of interference and jamming. By occupying a larger range of frequencies, spread spectrum systems can minimize the impact of narrowband interference and multipath fading, which are common challenges in wireless communication.

This technique also improves security because the signal becomes less susceptible to interception and eavesdropping, as it is not confined to a single frequency. Additionally, because the signal is spread out, it can coexist more effectively with other transmissions in the same frequency band, allowing for better coexistence in crowded frequency environments.

Employing this method offers benefits such as increased reliability and improved performance in environments with high levels of electromagnetic interference. The wider bandwidth also assists in reducing the likelihood of collisions or interference from other signals, enhancing overall communication quality.