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Indian Institute of Technology Madras

LDPC and Polar Codes in 5G Standard

Indian Institute of Technology Madras and NPTEL via Swayam

This course may be unavailable.


This course will introduce the error control codes – Low Density Parity Check codes and Polar codes - that have been proposed for 5G cellular communication systems. The emphasis will be on implementing decoders for these codes. 

PREREQUISITES: Probability theory, Digital communications, MATLAB


Week 0  :  (a) Linear block codes: parameters, parity check matrix, generator matrix 
 (b) Hard-decision and soft-decision decoding: BPSK-AWGN model
                 (c) Examples: Repetition code, Hamming code
 (d) MATLAB programs
Week 1  : (a) Low Density Parity Check codes: definition, properties 
                 (b) LDPC codes in 5G: protograph, base matrix, expansion
 (c)  Encoding LDPC codes in 5G
 (d) MATLAB programs 
Week 2 :  (a) [Optional background] SISO decoders for repetition, SPC codes, log-likelihood ratio
                 (b) Decoding LDPC codes: message passing, iterations
 (c) Layered minsum decoder
 (d) MATLAB programs
Week 3  : (a) Polar code: generator matrix, binary tree representation, frozen bits and information bits
 (b) Encoding polar codes
                 (b) Successive cancellation decoder for polar codes
 (c) MATLAB programs
Week 4  :  (a) Successive cancellation list decoding 
 (b) MATLAB programs    

Taught by

Prof. Andrew Thangaraj



5.0 rating, based on 1 Class Central review

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  • Mejmaa Bilal
    Thank you so much Sir Andrew and thanks to all the professors. This online course really helps me, it give updated and pure informations and it is easy to understand.
    Thank you again!
    Mejmaa Bilal

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