Features of fdm - fundamentals of networks, Computer Networking

Features of FDM

1.The FDM channel carries  only  one phone  circuit  at a time.

2.If an FDM channel is not in sue then  it is  sits idle and cannot be   used by  other users  to increase of share capacity. It is essentially a wasted resources.

3.After the assignment of a frequency  channel  to user transmission is continuous.

4. The bandwidth of FDM channels are relatively  narrow as each channel supports only  one circuit per carrier. That  is FDM is usually  implemented in narrow  band  systems.

5.The  symbol time of a narrow ban signal is larger as compared to the average delay spread. This  implies that the  amount  of inter symbol  interference is low  and thus  little or no equalization is  required in FDM narrow  band systems.

6.The complexity of FDM systems is lower when compared to TDM system though this  is changing as digital signal processing methods improve for TDM.

7.Since FDM is a continuous transmission  scheme fewer bits are needed for  overhead purpose (such a synchronization and farm in gbits0 as  compared to TDM.

8.FDM system  have  higher  systems costs  as compared to TDM systems because of  single  channel  per carried  designed  and the need to use costly band pass filters to eliminate spurious radiation at the base station.

9.FDM requires tight  RF flitting to  minimize  adjacent channel interference.

 

 

 

Posted Date: 3/2/2013 5:33:02 AM | Location : United States







Related Discussions:- Features of fdm - fundamentals of networks, Assignment Help, Ask Question on Features of fdm - fundamentals of networks, Get Answer, Expert's Help, Features of fdm - fundamentals of networks Discussions

Write discussion on Features of fdm - fundamentals of networks
Your posts are moderated
Related Questions
What is the full form of FDM and TDM It is both. Each of the 100 channels is possess its own frequency band (FDM), and on every channel two logical streams are intermixed by th

Q. Explain about Multiplicative Decrease ? Multiplicative Decrease (MD) if a time-out take places the threshold is set to one maximum segment size (TCP Tahoe, TCP Reno).

What are reasons behind using layered protocols  Reasons for using layered protocols, using them leads to breaking up design problem into smaller more manageable pieces and lay

Q. Error Detection-General? Sender transmits every data unit twice Receiver performs bit-by-bit comparison between those two versions of data. Any mismatch would

TP Monitor does mainly two things extremely well. They are Process management and Transaction management? They were originally introduced to run classes of applications that co

Can you define the WAN and LAN Interface in Routers?

Can you describe transport and tunnel mode in detail with datagram packets?

QUESTION (a) Briefly describe the steps involved in Network Simplex Method. (b) In Radix Heap Algorithm, the technique of buckets is employed. However this idea is an extens


In a client's software , the structure of an Internet server's address keyed is as follows: Where: http refer for the communication protocol to be used www refer for th