# Describe the relationship between bandwidth data transfer rate and signal frequency

DESCRIBE THE RELATIONSHIP BETWEEN BANDWIDTH, DATA TRANSFER RATE, AND SIGNAL FREQUENCY. p. – The difference between a signal's. Relationship between Data Rate and Bandwidth. Consider a square Double the bandwidth ⇒ double the data rate removing the component with the highest frequency). However, it's harder for the receiver to interpret the received signal. Conclusions: • The bandwidth that can be transmitted is limited by the transmission. 5. Describe the relationship between bandwidth, data transfer rate, and signal frequency. 6. How can noise and distortion be introduced into a transmission.

So first, let's talk a little bit about channels. When talking about bandwidth in channels, we actually talk about passband bandwidth which describes the range of frequencies a channel can carry with little distortion. Say I have a channel that can only pass signals whose frequency is between f1 and f2.

### Bandwidth (signal processing) - Wikipedia

Its frequency response function the channel's reaction to signals of different frequencies might be something like this: The bandwidth of a channel depends on the physical properties of the channel, so a copper wire will have a different bandwidth from a wireless channel and from an optical fiber.

Herefor example, is a table from wikipedia, specifying the bandwidths of different twisted pair cables. If our example channel has a bandwidth of 1Mhz, then we can fairly easily use it to send a signal whose bandwidth is 1Mhz or less.

**What is bandwidth? - All you need to know**

Signals with a wider bandwidth will be distorted when passing through, possibly making them unintelligible. If we were to perform a Fourier analysis on it, we would discover that increasing the data rate by making the bits shorter and closer to each otherincreases the signal's bandwidth.

The increase would be linear, so a two fold increase in the rate of bits, will mean a two fold increase in the bandwidth. The exact relation between bit rate and bandwidth depends on the data being sent as well as the modulation used such as NRZQAMManchseterand others.

In this context, bandwidth is also known as channel spacing. For other applications there are other definitions. One definition of bandwidth, for a system, could be the range of frequencies over which the system produces a specified level of performance.

A less strict and more practically useful definition will refer to the frequencies beyond which Performance is degraded. As with any definition of the width of a function, many definitions are suitable for different purposes.

## Bandwidth (signal processing)

In the context of, for example, the sampling theorem and Nyquist sampling ratebandwidth typically refers to baseband bandwidth. In the context of Nyquist symbol rate or Shannon-Hartley channel capacity for communication systems it refers to passband bandwidth.

The Rayleigh bandwidth of a simple radar pulse is defined as the inverse of its duration.

For example a one-microsecond pulse has a Rayleigh bandwidth of one megahertz. The frequency axis of this symbolic diagram can be linear or logarithmically scaled.

That definition is used in calculations of the lowest sampling rate that will satisfy the sampling theorem. To say that a system has a certain bandwidth means that the system can process signals of that bandwidth, or that the system reduces the bandwidth of a white noise input to that bandwidth.