Howtosignalprocessing
- How can DSSS systems benefit from multipath propagation?
- What are the key issues of spread spectrum technique?
- What is the disadvantage of spread spectrum?
- Which of the following is the main characteristics of spread spectrum?
How can DSSS systems benefit from multipath propagation?
(c) How can DSSS systems benefit from multi-path propagation? (3 points) DSSS systems typically use rake receivers that recombine signals travelling along the different paths. Recombina- tion results in a stronger signal compared to the strongest signal only.
What are the key issues of spread spectrum technique?
The core principle of spread spectrum is the use of noise-like carrier waves, and, as the name implies, bandwidths much wider than that required for simple point-to-point communication at the same data rate. Resistance to jamming (interference).
What is the disadvantage of spread spectrum?
Disadvantages: Bandwidth inefficient; • Implementation is somewhat complex. Two of the most popular techniques that provide spectrum spreading in a spread spectrum system are direct sequence and frequency hopping.
Which of the following is the main characteristics of spread spectrum?
The spread spectrum signals have the signal strength distributed as shown in the following frequency spectrum figure. Band of signals occupy a wide range of frequencies. Power density is very low. Energy is wide spread.
