What is meant by channel coding?
Channel coding, also known as forward error control coding (FECC), is a process of detecting and correcting bit errors in digital communication systems. Channel coding enables the receiver to detect and correct errors, if they occur during transmission due to noise, interference and fading.
What is the use of channel coding?
Channel coding is often used in digital communication systems to protect the digital information from noise and interference and reduce the number of bit errors. Channel coding is mostly accomplished by selectively introducing redundant bits into the transmitted information stream.
What is channel coding in wireless communication?
A channel is an abstract model describing how the received (or retrieved) data is associated with the transmitted (or stored) data. Channel coding starts with Claude Shannon’s mathematical theory of communication. Channel coding can be either error detection coding or error correction coding.
What is channel coding in LTE?
Channel Coding is a method to replace ‘original data bits’ with ‘some other bits (normally longer than the original bits)’. For example, the simplest coding would be as follows : 0 –> 0000 : replace all ‘1’ in orginal data into ‘0000’ 1 –> 1111 : replace all ‘1’ in orginal data into ‘1111’
What do you mean by channel coding in GSM technology?
Channel Coding /Convolutional Coding Channel coding in GSM uses the 260 bits from speech coding as input to channel coding and outputs 456 encoded bits. Out of the 260 bits produced by RPE-LTP speech coder, 182 are classified as important bits and 78 as unimportant bits.
What is source coding and channel coding?
Source coding: The source encoder converts information waveforms to bits, while the decoder converts bits back to waveforms. Channel coding: The channel encoder converts bits to signal waveform, while the decoder converts received waveform back to bits.
What is channel encoding and decoding?
Wireless communication systems depend on channel coding (sometimes called forward error correction) to ensure that the data received is the same as the data sent. Then at the receiver end, complex codes requiring sophisticated algorithms decode this information and recover the original data. …
What is channel coding and source coding?
Why channel coding is important in cellular communication?
Wireless communication systems depend on channel coding (sometimes called forward error correction) to ensure that the data received is the same as the data sent. Then at the receiver end, complex codes requiring sophisticated algorithms decode this information and recover the original data.
What is channel encoder and decoder?
The channel encoder introduces controlled redundancy, called parity bits, and the channel decoder exploits the redundancy to facilitate the detection and correction of bit errors and thus determine the actual transmitted input bit sequence.