Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain FDM and show how CCITT standards help in building the base band?
Frequency Division Multiplexing: This is the process of combining some information channels through shifting their signals to various frequency groups in the spectrum therefore they can be transmitted simultaneously over common transmission service.
The bandwidth of a telephone speech signal is quite less than 4 kHz. Where, the available bandwidth on unloaded cables pair is fine above 100 kHz. Therefore this is possible, by using modulation techniques, for divide up the cable bandwidth then a number of telephone speech paths can be carried at the same time along a single cable pair. The normal arrangement contains 24 telephone channels per cable pair, the modulation in 24 channels being carried out within the two stages. In the primary stage, 12 channels are multiplexed together to form that is commonly termed as a basic group. This basic group arrangement is demonstrated in figure. Each of the 12 telephone signals are single side-band amplitude modulated on to carriers spaced at 4 kHz intervals 64 kHz to 108 kHz. The lower side-band (LSB) is utilized in every case. The 12 base-band signals are thus translated in the frequency band from 60 kHz 108 kHz as demonstrated. The block diagram for the channel translating equipment is specified in figure. To form a 24-channel system, to basic groups are occupied together. One basic group (B) is transmitted directly as this stands. Another basic group (A) is amplitude modulated on to a carrier are 120 kHz and the lower side-band is occupied such as to take the frequency range from 12 kHz to 60 kHz as demonstrated in figure. by using two stages of modulation for basic group A, this is possible to decrease the physical size of the component needed for the LSB filters of the figure, because the lowest cut- off frequency needed is at 64 kHz quite than 12 kHz when the whole block of 24 channels were assembled together in one stage of modulation.
FIG - Basic Group Arrangement
FIG - Channel Translating Equipment
What are conditions under which a deadlock situation may arise? A deadlock situation can arise if the following four conditions hold concurrently in a system: a. Mutual exc
Reading Decision Trees There is a link between decision tree representation and logical representations, which may be exploited to form it more easy to understand and learned
Q. Explain about Interrupt servicing routines? First the situation is to be checked as to why the interrupt has happened. That includes not only device but also why the device
Is the Process before and after the swap are the same? Give reason. Process before swapping is residing in the primary memory in its original form. The regions (text, data and
Bubbling the Pipeline: Bubbling the pipeline (also known as a pipeline break or pipeline stall) is a technique for preventing, structural, data and branch hazards from taking p
Q. Define HEX directive? HEX: HEX directive enables the coding of hexadecimal values in body of the program. That statement directs assembler to treat tokens in source file wh
How are the function code handles in Flow Logic? When the User selects a function in a transaction, the system copies the function code into a specially designated
Assignment 4: Handwritten Bangla Numeral Recognition using Multilayer Feed Forward Neural Network. In this assignment, you will design a multi layer feed forward neural network
Performance Bottlenecks can be identified by using monitors. These monitors might be application server monitors, database server monitors, web server monitors and network monitors
Q. Basic Architecture of computer system? Replacing the ALU and CU (i.e., CPU) of Figure by a microprocessor, and storing instructions and data in the same memory, one arrives
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd