Error Control Coding: An Introduction to Convolutional Codes
Error Control Coding: An Introduction to Convolutional Codes. Instructor: Prof. Adrish Banerjee, Department of Electrical Engineering, IIT Kanpur. Error control coding is an indispensable part of any digital communication system. In this introductory course, we will discuss theory of convolutional codes, their encoding and decoding techniques as well as their applications in real world scenarios. We will also study how from simple codes by concatenation we can build more powerful error correcting codes. In particular, we will study in details, one such capacity approaching codes called turbo codes. (from nptel.ac.in)
| Lecture 15 - Convergence of Turbo Codes |
In this lecture we describe three different measures for convergence analysis of turbo codes namely, El Gamal's method based on SNR, Divsalar et. al. method based on density evolution and ten Brink's approach based on EXIT charts. Then we show how to draw the transfer characteristics of turbo decoder and use it to compute decoding threshold under iterative decoding.
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