a bit synchronizer is a ckt which made at the receiver end at that time when a bit interval end and next starts.
nibble is in electronic equal 4 bit nibble=4bit
Synchronous optical network (SONET)
Just as electric cable transmits electric line power from the transmission center to receiving station so the data cable in digital communication transmits the encoded binary digits from a digital transmission system to a digital receiving system.
Because in order to preserve the original sound, a digital sampling rate must be twice the frequency of the analog signalAnalog data is smooth and continuous, where as digital data, such as the binary data used in computers, has distinct gradations. The process of producing digital data by measuring data at a series of representative points is called sampling.
A flip-flop is used to store one bit data. If we want to store 2 bit data then we require 2 flip-flops. If we want to store n bit data then we require n flip-flops. Thus , a number of flip-flops which stores n bit data is called as register.
Disadvantage of Analog Communication: 1)Analog Communication systems are costlier than digital communication system. 2)Less Security in Analog Communication 3)More prone to noise interference. Advantage of Analog Communication: 1)Transmission bandwidth required is less. 2)No need of synchronization. Advantage of Digital Communication: 1)Digital Communication systems are simpler and cheaper. 2)Using data encryption only permitted user are allowed to detect the transmitted data. 3)Since in Digital Communication, channel coding is used, therefore a large amount of errors may be detected 4)Since transmitted signal is digital in nature,large amount of noise tolerance may be tolerated Disadvantage of Digital Communication: 1)More transmission bandwidth required. 2)Digital Communication needs synchronization in case of synchronous modulation.
synchronization between the multiplexer and demultiplexer is a major issue in data transmission. if the multiplexer and demultiplexer are out of synchronization a bit belonging to one channel may be received by the wrong channel. for dis reason , one or more synchronization bits are usually added to the beginning of each frame. these bits, called framing bit , follow a pattern, frame to frame, that allow the demultiplexer to syncronize with the incoming steam so that it can separate the time slots accurately. in most cases, this syncronization information consists of one bit
David Kinniment has written: 'Synchronization and arbitration in digital systems' -- subject(s): Design and construction, Synchronization, Timing circuits, Digital integrated circuits
Umberto Mengali has written: 'Synchronization techniques for digital receivers' -- subject(s): Digital communications, Equipment and supplies, Synchronization, Timing circuits, Design and construction
because it's digital communication.
M. Nesenbergs has written: 'Mean synchronization times for ATM cells' -- subject(s): Broadband communication systems, Integrated services digital networks
asynchronous
Provides synchronization
Bluetooth
Framing bit is a common practice in telecommunication. Framing bit is a bit that precedes a T1 or J1 frame. It is used for the purpose of synchronization of the incoming data with the receiver.
In digital communication we talk about signal while in data communication we talk about data and the could be in the form of packets or frames.
Analog communication considers infinite amplitude levels. But in digital communication only 2 levels of signal is present.