What are the techniques for increasing channel capacity?

What are the techniques for increasing 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 are the techniques for increasing channel capacity in satellite communication?

There are many multiple access techniques for satellite communication. These are frequency division multiple access (FDMA), time division multiple access (TDMA), code division multiple access (CDMA), SDMA, paired carrier multiple access (PCMA), multiple input-multiple output (MIMO), etc.

What are the factors to consider while achieving maximum channel capacity?

The bandwidth available. Number of levels in digital signal. The quality of the channel – level of noise.

Which modulation technique requires less bandwidth?

Linear modulation techniques, including all forms of quadrature-amplitude modulation (QAM) and phase-shift-keying (PSK), use less bandwidth than nonlinear techniques, including various forms of frequency/minimum-shift-keying (FSK and MSK).

What is capacity theorem?

The Shannon capacity theorem defines the maximum amount of information, or data capacity, which can be sent over any channel or medium (wireless, coax, twister pair, fiber etc.). C = B log 2 ( 1 + S / N ) where. C is the channel capacity in bits per second (or maximum rate of data)

What is the capacity of satellite?

Industry analysts at Northern Sky Research believe that high-throughput satellites will supply at least 1.34 TB/s of capacity by 2020 and thus will be a driving power for the global satellite backhaul market which is expected to triple in value – jumping from the 2012 annual revenue of about US$800 million to $2.3 …

What factors affect channel capacity?

Key factors affecting the channel capacity are-

• Data rate- speed of data transmission measured in bits per second.
• Bandwidth – Maximum data transfer rate of a network i.e. 25 Mbps.
• Error rate – It is the ratio of total number of data units resulted in error to the total number of data units transmitted.

How is the capacity of a channel determined?

The maximum rate, R, at which information can be transmitted reliably through a channel is limited by the channel capacity C. The capacity of a channel perturbed by white noise is given by Shannon (1948): Where W is bandwidth and P / N is signal-to-noise ratio. For R < C, information may be transmitted at an arbitrarily low error rate.

Which is the best modulation technique for diffusion?

In the analysis of this paper, we use two modulation techniques, namely Concentration Shift Keying (CSK) and Molecule Shift Keying (MoSK) that we proposed in our previous paper. These techniques are suitable for the unique properties of messenger molecule concentration waves in nanonetworks.

How does WDM increase the channel capacity of a fiber?

Increased channel capacity is obtained either by increasing the bit rate of transmission or by using the technique of wavelength division multiplexing (WDM) wherein multiple wavelengths carrying independent channels are multiplexed and propagate simultaneously through the same fiber.

How to calculate the capacity of a AWGN channel?

From Shannon’s theory, the SE of a single AWGN channel is given by the widely known relation [14,16], where the SNR is defined as SNR = P / N where P is the average signal power and N is the average noise power in a bandwidth equal to the baud rate R s of a time-division multiplexed (TDM) signal.