Spread Spectrum Communications: Advantages And Applications Of Spread Spectrum Communications
3. Advantages and Applications Spread Spectrum Communication
The SS Communications are widely used today for Military, Industrial, Avionics, Scientific, and Civil uses. The applications include the following:
- Jam-resistant communication systems
- CDMA radios: It is useful in multiple access communications wherein many users communicate over a shared channel. Here the assignment of a unique spread spectrum sequence to each user allows him to simultaneouly transmit over a common channel with minimal mutual interference. Such access technique often simplifies the network control requirements considerably.
- High Resolution Ranging: SS Communications is often used in high resolution ranging. It is possible to locate an object with good accuracy using SS techniques. One example where it could be used is Global Positioning System (GPS). Here an object can use signals from several satellites transmitting SS signals according to a predefined format to determine its own position accurately on the globe.
- WLAN: Wireless LAN (Local Area Networks) widely
use spread spectrum communications. IEEE 802.11 is a
standard that is developed for mobile communication,
and widely implemented throughout the world. The standard
defines three types of Physical Layer communications.
These are:
- Infrared (IR) Communications
- Direct Sequence Spread Spectrum Communications
- Frequency Hopping Spread Spectrum Communications.
