What is spread spectrum advantages and disadvantages?

Involves low power spectral density since signal is spread over a large frequency band. 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.

What are the advantages of spread spectrum technique?

The main advantage of spread spectrum communication technique is to prevent “interference” whether it is intentional or unintentional. The signals modulated with these techniques are hard to interfere and cannot be jammed. An intruder with no official access is never allowed to crack them.

What are the advantages and disadvantages of DSSS technique?

➨It uses both time and frequency planes for transmission of information bits, effect of interference and fading can be minimized to great extent. ➨It can be employed in point to point applications at the rate of 11 Mbps. ➨It supports higher coverage range due to low SNR requirement at receiver.

What are the spread spectrum techniques?

Spread-Spectrum techniques are methods by which a signal (e.g. an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.

What is the advantage of spread spectrum modulation Mcq?

This set of Digital Communications Multiple Choice Questions & Answers (MCQs) focuses on “Spread spectrum and CDMA”. Explanation: Advantages of spread spectrum are low susceptibility, reduced interference, immunity to jamming and co existence of multi path system.

Why spread spectrum technique is inefficient for a single user?

17. Why spread spectrum technique is inefficient for a single user? Explanation: Spread spectrum systems are bandwidth inefficient for single users. But in spread spectrum systems, many users can simultaneously use the same bandwidth without significantly interfering with one another.

What is direct sequence spread spectrum modulation mention its advantages?

In telecommunications, direct-sequence spread spectrum (DSSS) is a spread-spectrum modulation technique primarily used to reduce overall signal interference. The direct-sequence modulation makes the transmitted signal wider in bandwidth than the information bandwidth.

What are the advantages and disadvantages of frequency hopping?

Advantages and disadvantages of frequency hopping spread spectrum

• It has less distance effect.
• Provide the greatest amount of spreading.
• The bandwidth of these systems is large.
• It has a short acquisition time.
• Best discrimination against multi-path.
• Very large bandwidth.

What is the importance of spreading gain in Dsss why it is preferred to have a high value of spreading gain?

DSSS spreading gain It is found that the larger the spreading gain of the direct sequence spread spectrum signal, the more effective the performance of the system is. This is because the wanted signal becomes larger.

What is meant by spread spectrum?

Definition(s): Telecommunications techniques in which a signal is transmitted in a bandwidth considerably greater than the frequency content of the original information. Frequency hopping, direct sequence spreading, time scrambling, and combinations of these techniques are forms of spread spectrum.

Which is one of the disadvantages of 2G standards?

Which is one of the disadvantages of 2G standards? Explanation: 2G technologies use circuit switched data modems that limits data users to a single circuit switched voice channel.

What is the main disadvantage of frequency hopping SS FHSS )?

There are some of the disadvantages of Frequency hopping spread spectrum (FH-SS) given below : It needs complex and costly digital frequency synthesizers are required to be used. It needs error detection. The processing gain is higher than that of a direct sequence spread spectrum.