What is near far effect

1. What do you mean by the near far effect?
2. What is near far effect in CDMA network?
3. What is near far effect in CDMA network how it can be minimized?
4. What is near far problem in CDMA How do you overcome it ques10?
5. What is the responsibility of MSC in cellular telephone system?
6. What is adjacent channel interference in mobile communication?
7. What is GSM architecture?
8. What is a good code for CDMA?
9. What is Sdma in mobile computing?
10. What are the benefits of rake receiver?
11. How does FDMA handles near-far problem?
12. How do you prevent adjacent channel interference?
13. How does the near far effect influence TDMA systems?
14. What is CDMA full form?
15. Which is more bandwidth efficient Mcq?

What do you mean by the near far effect?

The near–far problem or hearability problem is the effect of a strong signal from a near signal source in making it hard for a receiver to hear a weaker signal from a further source due to adjacent-channel interference, co-channel interference, distortion, capture effect, dynamic range limitation, or the like.

What is near far effect in CDMA network?

1. The situation where the received power difference between two CDMA users is so great that discrimination of the low power user is impossible even with low cross-correlation between the codes.

What is near far effect in CDMA network how it can be minimized?

The CDMA near far problem is resolved in systems such as cdmaOne, CDMA2000 and W-CDMA by using sophisticated power control schemes to ensure that the power levels at the base station fall within a given band.

What is near far problem in CDMA How do you overcome it ques10?

The near far problem is undesirable effect in CDMA systems. It occurs when many mobile users share the same channel. ... In CDMA strongest signal level raise the noise floor at the base station demodulators for the weaker signals thus decreasing the probability that weaker signals will be received.

What is the responsibility of MSC in cellular telephone system?

What is the responsibility of MSC in cellular telephone system? Explanation: Mobile Switching Center (MSC) is responsible for connecting all mobiles to the PSTN (Public Switched Telephone Network) in a cellular system.

What is adjacent channel interference in mobile communication?

Adjacent-channel interference (ACI) is interference caused by extraneous power from a signal in an adjacent channel.

What is GSM architecture?

The GSM architecture consists of three major interconnected subsystems that interact with themselves and with users through certain network interface. The subsystems are Base Station Subsystem (BSS), Network Switching Subsystem (NSS) and Operational Support Subsystem (OSS).

What is a good code for CDMA?

Ideal codes for CDMA should have delta function as their autocorrelation functions, and 0 for cross-correlation functions, i.e., autocorrelation function \rho(\tau) = \delta(\tau). cross-correlation functions \rho_i,j(\tau)=0, for all i \neq j, for all \tau.

What is Sdma in mobile computing?

Advanced multiple antenna technique that increases the spectral efficiency, range and bandwidth available to moving wireless devices. Traditional cellular base stations radiate power in all directions, because they have no information about where the mobile device is located.

What are the benefits of rake receiver?

The primary advantage of the rake receiver is flexible multipath allocation supporting enhanced modularity of the receiver and resource sharing among multiple channel decoders.

How does FDMA handles near-far problem?

To handle the near-far problem, FDMA cellular systems adopt two different measures. First, when frequencies are assigned to a cell, they are grouped such that the frequencies in each cell are as far apart as possible. The second measure em- ployed is power control that is discussed in Chapter 6.

How do you prevent adjacent channel interference?

The ACI can be reduced by: (1) using modulation schemes which have low out-of-band radiation; (2) carefully designing the bandpass filter at the receiver front end; and (c) assigning adjacent channels to different cells in order to keep the frequency separation between each channel in a given cell as large as possible.

How does the near far effect influence TDMA systems?

(a) How does the near/far effect influence TDMA systems? Answer: (6 points) As long as a station can receive a signal and the signal arrives at the right time to hit the right time-slot it does not matter in TDMA systems if terminals are far or near.

What is CDMA full form?

CDMA stands for Code Division Multiple Access. It is basically a channel access method and is also an example of multiple access. Multiple access basically means that information by several transmitters can be sent simultaneously onto a single communication channel.

Which is more bandwidth efficient Mcq?

4. Which is more bandwidth efficient? Explanation: Time hopping spread spectrum is more bandwidth efficient.