Which is essential for fast communication?

Detailed Solution. Concept: Shanon-hartley theorem: It tells about the maximum rates at which information can be transmitted over a channel without error. Since data Rate should be less than channel capacity so for fast communication or high-speed data rate we should increase the channel capacity.

Which communication channel has the highest bandwidth?

Face-to-face or F2F is by far the highest bandwidth channel.

What is high bandwidth communication?

If you are sitting in front of someone, seeing the same things that they are, experiencing the same outside factors as they are, reading their body language and expressions, then you are truly having high-bandwidth communication.

What factors does the channel capacity depend in communication?

Channel Capacity Channel capacity of the wireless underground channel depends on the soil moisture, operation frequency, and bandwidth of the antenna. Impact of different factors on the channel capacity are shown in the following.

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.

What is the bandwidth of a communication channel?

Communication channels are classified as analog or digital. Bandwidth refers to the data throughput capacity of any communication channel. As bandwidth increases, more information per unit of time can pass through the channel.

What is the bandwidth communication?

Network bandwidth is a measurement indicating the maximum capacity of a wired or wireless communications link to transmit data over a network connection in a given amount of time. Typically, bandwidth is represented in the number of bits, kilobits, megabits or gigabits that can be transmitted in 1 second.

What is channel bandwidth in communication?

What is channel capacity in communication?

Channel capacity is a maximum information rate that a channel can transmit. It is measured in bits per second (bps). Channel capacity is a rough value as measuring takes into account only the whole amount of data transferred, but leaves out of account communication quality.

How can I increase my channel capacity?

As a result, MIMO technology is able to increase the capacity of a given channel while obeying Shannon-Hartley’s equation. By increasing the number of transmit and receive antennas, a 2 x 2 MIMO system effectively doubles the maximum data rate of what can be achieved in a traditional single RF channel.

What is the need of companding in a PCM system?

For digital audio signals, companding is used in pulse code modulation (PCM). The process involves decreasing the number of bits used to record the strongest (loudest) signals. In the digital file format, companding improves the signal-to-noise ratio at reduced bit rates.

What is the maximum data rate for a noisy channel?

The maximum data rate for any noisy channel is: C = BW ˟log2 (1+S/N) Where, C= Channel capacity in bits per second BW= bandwidth of channel S/N= signal to noise ratio. The channel capacity is also called as Shannon capacity.

What are the factors affecting channel capacity in data communication?

• The channel capacity is a very important consideration in data communications that is how fast we can send data, in bits per second, over a channel. 3 Channel capacity 4. DATA RATE LIMITS • The maximum data rate limit over a medium is decided by following factors: 1. Bandwidth of channel. 2. Signal levels 3.

What is the difference between bandwidth and Shannon capacity?

In reality, we cannot have a noiseless channel; the channel is always noisy. Shannon capacity is In the above equation, bandwidth is the bandwidth of the channel, SNR is the signal-to-noise ratio, and capacity is the capacity of the channel in bits per second. Bandwidth is a fixed quantity, so it cannot be changed.

Why is frequency selectivity important for wideband wireless channels?

Robustness to channel frequency selectivity Typically, wideband wireless channels are strongly frequency selective and robustness to frequency selectivity is fundamental to support high throughput communication over wideband channels.