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Bandwidth is an inherent characteristic of a given transmission channel, or is determined by the narrowest-bandwidth component of the system. The bandwidth of a channel will limit the possible attainable data rates. This is shown simply by Shannon's Theorem, which states
C = B log_2 (1+P_signal/P_noise),
where C is the channel capacity in bps, B is the channel bandwidth in Hz, P_signal is the power of the detected signal in W, and P_noise is the noise power of the detected signal in W.
As an example, consider a standard phone line (i.e., using a dial-up modem). Standard phone lines have a bandwidth of about 3.4 kHz and a signal-to-noise ratio of about 10,000. Using this information, we get
C = (3.4 kHz) log_2 (1+10,000) = 45 kbps.
Dial-up modems can actually get as high as 56 kbps, but that is beyond the scope of this question. In general Shannon's Theorem can provide a fairly accurate way to predict the possible data rates for a given transmission channel if the bandwidth and resulting signal and noise powers are known.
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∙ 15y ago
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∙ 11y agoEffect of bandwidth on digital signal:
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What is signal bandwidth?
Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth. The signals ranging within the upper limit & lower limit are called bandwidth signals.
Voice signals are signals whereas computer signals are?
Voice signals are analog signals, whereas computer signals are digital .
What converts digital signals to analog signals and vice versa?
Digital signal is moreefficientimmune to noiseerror freethan analog signal.
Electric cmarator working on the principal of amplifier and digital sigital signals true or false?
The electric motor does not work on the principle of the amplifier and the digital signals.
What is the purpose of a digital converter?
A digital converter converts the analog signals that are received by your TV to digital signals. Most TV providers only offer digital TV these days, so you only need it if you're still using analog.
Why do most networks transmit digital rather than analog signals?
Digital signals are capable of carrying more information than analogue signals because digital signals make use of the bandwidth more efficiently by closely approximating the original analogue..
The effect of different bandwidths on a digital bit?
None. A bit is a bit is a bit, and all are digital. Bandwidth identifies how much space is available for bits.
Why digital signals are better than analog signals?
according to my view, to deal with digital signal is more easy then that of analog. and it also stable so many of the semiconductor circuits run only on dc signals...... i think doubt is clear now....
What is the difference between bandwidth and bit-rate in web steaming?
Bandwidth:- It is one characteristics that measures network performance is bandwidth. Bandwidth can be measured in two values:- 1. IN HERTZ 2. IN BITS/SEC. Bit Rate:- It is used to describes digital signals. the bit rate is the no of bits sent in 1s
Full meaning of bandwidth?
Measurement of the capacity of a communications signal. For digital signals, the bandwidth is the data speed or rate, measured in bits per second (bps). For analog signals, it is the difference between the highest and lowest frequency components, measured in hertz (cycles per second). For example, a modem with a bandwidth of 56 kilobits per second (Kbps) can transmit a maximum of about 56,000 bits of digital data in one second. The human voice, which produces analog sound waves, has a typical bandwidth of three kilohertz between the highest and lowest frequency sounds it can generate.
Will digital tv become anything like cable because it has extra bandwidth which can be used to broadcast more channels?
In reality, digital TV doesn't have extra bandwidth. It uses the same (or a little less) amount of bandwidth as standard NTSC television signal, but since it's digital in nature, they are able to multiplex up to eight TV signals within the same amount of transponder space. So yes, it can broadcast more channels.
Why do you have to get digital television?
Older TV sets use analog signals. In February, all TV signals that are now analog will become digital because it gives more efficient use of the bandwidth. Analog sets will not receive and interpret the images from a digital transmission. It's the same reason you can't use your old TV as a computer monitor.
What is signal bandwidth?
Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth. The signals ranging within the upper limit & lower limit are called bandwidth signals.
Is RG59 Coaxial Cable compatible with RG6 Coaxial Cable?
yes RG6 should be used exclusively for satellite hookups and digital CATV. RG59 is fine for analog CATV signals but will not support the higher bandwidth used for satellite signals.
What are the values that digital signals have?
digital signals have two values. 0 and 1.
How are digital signals?
Digital signals are measured in bits per second (bps).
Which of digital signals and analog signals are more vulnerable to error?
Analogue signals are more vulnerable to error than digital signals. See the related question "Why digital signals are more noise free than analogue signals?" for more details.
