Question: What Is The Basic Operation Useful In Spread Spectrum Technology?

What is the benefit of spread spectrum?

A benefit of spread spectrum technology is its ability to work at low spectral density levels when compared to narrow bandwidth services, enabling smaller antennas while overcoming adjacent satellite interference and increasing communications link security..

What are the benefits of modulation?

Following are some of the advantages for implementing modulation in the communication systems.Antenna size gets reduced.No signal mixing occurs.Communication range increases.Multiplexing of signals occur.Adjustments in the bandwidth is allowed.Reception quality improves.

Which is better FHSS or DSSS?

DSSS, in contrast, spreads the signal across a wider bandwidth than FHSS, creating a lower power density across the spectrum. … Because FHSS allows more channels in the same frequency band, FHSS systems can support a greater aggregate bandwidth for coverage.

What is SATA spread spectrum?

This BIOS feature controls spread spectrum clocking of the Serial ATA (SATA) interface. When set to Down Spread, the motherboard modulates the Serial ATA interface’s clock signal downwards by a small amount. … Generally, frequency modulation via this feature should not cause any problems.

What does spread spectrum in BIOS mean?

Spread spectrum clocking works by continuously modulating the clock signal around a particular frequency. This “spreads out” the power output and “flattens” the spikes of signal waveform, keeping them below the FCC limit. The MCLK Spread Spectrum BIOS feature controls spread spectrum clocking of the memory bus.

What is modulation in simple words?

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted. … A modulator is a device that performs modulation.

Who invented spread spectrum?

Hedy LamarrHedy Lamarr (/ˈheɪdi/), born Hedwig Eva Maria Kiesler (November 9, 1914 – January 19, 2000), was an Austrian-American actress, inventor, and film producer. She was part of 30 films in an acting career spanning 28 years, and co-invented an early version of frequency-hopping spread spectrum.

What are the two types of spread spectrum techniques?

There are two predominant techniques to spread the spectrum: 1) Frequency hoping (FH), which makes the narrow band signal jump in random narrow bands within a larger bandwidth. 2) Direct sequence (DS) which introduces rapid phase transition to the data to make it larger in bandwidth.

Should I disable Spread Spectrum?

Engineers, looking for a way to meet regulation, began using a method for limiting such interferences called spread spectrum clocking. … The fundamentals of overclocking demand the cleanest, purest signal possible, which is why spread spectrum should always be disabled unless you have a good reason to enable it.

Why spread spectrum is used?

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. … These spread spectrum signals transmit at low power density and has a wide spread of signals.

What is DSSS modulation?

In telecommunications, direct-sequence spread spectrum (DSSS) is a spread-spectrum modulation technique primarily used to reduce overall signal interference. … Each spreading-sequence bit, which is known as a chip, has a much shorter duration (larger bandwidth) than the original message bits.

Why do we need modulation?

Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.

How is modulation done?

This process of imposing an input signal onto a carrier wave is called modulation. In other words, modulation changes the shape of a carrier wave to somehow encode the speech or data information that we were interested in carrying. Modulation is like hiding a code inside the carrier wave.

What is NX mode in BIOS?

What is NX, XD and XN in the BIOS. This is a BIOS feature that allows you to enable or disable the Execute Disable feature of your CPU and can be configured only through the BIOS of your computer. NX stands for No eXecute and is a technology used in processors to prevent execution of certain types of code.