An Introduction to Polar Codes
نویسندگان
چکیده
منابع مشابه
A Brief Introduction to Polar Codes
Figure 1: Factor Graph In particular, consider a setup where (U1, U2) are two equiprobable bits that are encoded into (X1, X2) = (U1 ⊕ U2, U2). Then, (X1, X2) are mapped to (Y1, Y2) by two independent BMS channels with transition probabilities P(Y1 = y |X1 = x) = P(Y2 = y |X2 = x) = W (y|x). The factor graph for this setup is shown in Figure 1. Since the mapping from (U1, U2) to (X1, X2) is inv...
متن کاملAn efficient secure channel coding scheme based on polar codes
In this paper, we propose a new framework for joint encryption encoding scheme based on polar codes, namely efficient and secure joint secret key encryption channel coding scheme. The issue of using new coding structure, i.e. polar codes in Rao-Nam (RN) like schemes is addressed. Cryptanalysis methods show that the proposed scheme has an acceptable level of security with a relatively smaller ke...
متن کاملAn Introduction to Turbo Codes
| A tutorial introduction to the new class of binary parallel concatenated recursive systematic convolutional codes termed turbo codes is presented. It is shown that such codes are in fact linear block codes, and the encoding operation can be viewed as a modulo-2 multiplication of the information sequence with a generator matrix. A framework for analyzing the performance of turbo codes is propo...
متن کاملAn Introduction to the Log-Polar Mapping
One interesting feature of the human visual system is the topological transformation of the retinal image into its cortical projection. The excitation of the cortex can be approximated by a log-polar mapping of the eye’s retinal image. In this tutorial paper we describe the log-polar mapping and its main properties.
متن کاملAn Introduction to Guided and Polar Surfacing
This paper gives an overview of two recent techniques for high-quality surface constructions: polar layout and the guided approach. We demonstrate the challenge of high-quality surface construction by examples since the notion of surface quality lacks an overarching theory. A key ingredient of high-quality constructions is a good layout of the surface pieces. Polar layout simplifies design and ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEICE ESS Fundamentals Review
سال: 2013
ISSN: 1882-0875
DOI: 10.1587/essfr.6.175