Quickcomputerstips
An equalizer can dramatically improve the performance of a modem over a communication channel, compensating for both amplitude and delay distortion in the channel.
- How can we reduce delay distortion effect?
- How do you compensate a phase delay?
- What is delay distortion in communication?
- How do you reduce signal distortion?
- How can we prevent distortion in communication?
- What is computer network distortion?
- What is RF group delay?
- What is phase delay and group delay in DSP?
- What is phase delay in DSP?
- What is baseband and broadband transmission?
- What are the 3 types of transmission impairment?
- What causes signal distortion?
- Which type of signal is used in communication process to Minimise the effect of noise?
- What is the use of companding?
How can we reduce delay distortion effect?
Again, an amplifier or a repeater can be used. Attenuation is an increasing function of frequency, with more attenuation at higher frequency than at lower frequency. An equalizer can smooth out the effect of attenuation across frequency bands, and an amplifier can amplify high frequencies more than low frequencies.
How do you compensate a phase delay?
When the shift is constant, you can correct for the delay by shifting the signal in time. Sometimes the filter delays some frequency components more than others. This phenomenon is called phase distortion. To compensate for this effect, you can perform zero-phase filtering using the filtfilt function.
What is delay distortion in communication?
Delay distortion is a guided transmission media phenomenon where network data signals are transmitted via a medium at a certain frequency and speed. ... This means that all signals do not arrive at the same time, resulting in distortion of the signal.
How do you reduce signal distortion?
Signal distortion is not usually significant for lengths less than 30 feet (or 1000 picofarads). To minimize the distortion, use low capacitance cable (less than 30 picofarads per foot), in the shortest length possible for the application.
How can we prevent distortion in communication?
Avoid Using Abstract Words, Jargon and/or Slang: The more concrete your word choices; the less likely your meaning can be misconstrued or miscommunicated. Get Feedback & Monitor the Links in the Communication Chain: Solicit feedback along the communication chain to ensure that your message was understood.
What is computer network distortion?
Distortion is a term used to describe an interruption of transmitting signals that cause an unclear reception. Distortion is commonly found in sound generated or received by a computer, video or display signals and data cables such as network cables.
What is RF group delay?
Editorial Team - everything RF
Group delay is a measurement of the time taken by the modulated signal to get through the system. Group Delay is measured in seconds. For an ideal filter, the phase will be linear and the group delay would be constant.
What is phase delay and group delay in DSP?
In signal processing, group delay is the time delay of the amplitude envelopes of the various sinusoidal components of a signal through a device under test, and is a function of frequency for each component. Phase delay, in contrast, is the time delay of the phase as opposed to the time delay of the amplitude envelope.
What is phase delay in DSP?
The phase delay gives the time delay in seconds experienced by each sinusoidal component of the input signal. For example, in the simplest lowpass filter of Chapter 1, we found that the phase response was , which corresponds to a phase delay , or one-half sample.
What is baseband and broadband transmission?
The baseband transmits the digital signal using the physical medium like wires. The broadband transmits the analog signals using optical fibers and twisted cables as a medium of transmission.
What are the 3 types of transmission impairment?
There are three types of transmission impairments: attenuation, delay distortion, and noise.
What causes signal distortion?
Intermodulation distortion is a result of nonlinearities in the system such that one frequency component tends to modulate another frequency component—e.g., a high audio frequency modulating a low audio frequency. ... Noise added to a signal, either purposely or inadvertently, is sometimes referred to as distortion.
Which type of signal is used in communication process to Minimise the effect of noise?
A more effective way to avoid noise, however, is to covert the analog signal to a digital signal instead of amplifying it. As shown in Figure 4, digital signals, with their set of discrete bits, are far more immune to noise than analog.
What is the use of companding?
Companding is used in digital telephony systems, compressing before input to an analog-to-digital converter, and then expanding after a digital-to-analog converter. This is equivalent to using a non-linear ADC as in a T-carrier telephone system that implements A-law or μ-law companding.
