Design of Rate-Compatible RA-Type Low-Density Parity-Check Codes Using Splitting
SEMINAR REPORT
Submitted by
Bibina V.C.
First Semester
M.Tech, Signal Processing
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
COLLEGE OF ENGINEERING
TRIVANDRUM
2010



ABSTRACT
Here a new rate-control scheme splitting is proposed to construct low-rate codes
from high rate codes. It splits rows of parity-check matrices of repeat accumulate type
(RA-Type) LDPC codes by ....etc

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Introduction
A low-density parity-check (LDPC) code is a linear error correcting code, a method of transmitting a message over a noisy transmission channel by adding redundancy to the data bits. LDPC codes are capacity approaching codes, which means that practical constructions exist that allow for low error probability decoding at noise close to the theoretical maximum (the Shannon limit). LDPC codes are finding increasing use in data-corrupting noise is desired (10 Gbps Ethernet, DVBS-S, etc).
Gallager invented regular LDPC codes i ....etc

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Low Density Parity Check Codes
Abstract
LDPC codes are one of the hottest topics in coding theory today. Originally invented in
the early 1960 s, they have experienced an amazing comeback in the last few years. Unlike
many other classes of codes LDPC codes are already equipped with very fast (probabilistic)
encoding and decoding algorithms. The question is that of the design of the codes such that these
algorithms can recover the original codeword in the face of large amounts of noise. New analytic
and combinatorial tools make it possib ....etc

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Purchasing Power Parity



IMPORTANCE OF IB
1. Helps as growth strategy: - Geographic expansion may be used as a business strategy. Even though companies may expand their business at home.
2. Helps in managing product life cycle: - every product has to pass through different stages of product life cycle-when the product reaches the last stages of life cycle in present market, it may get proper response at other markets.
3. Technology advantages: - some companies have outstanding ....etc

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What is CRC?
A systematic error detecting code
a group of error control bits (which is the remainder --a polynomial division of a message polynomial by generator polynomial) is appended to the end of the message block
with considerable burst-error detection capability
The receiver generally has the ability to send
retransmission requests back to the data source through a feedback channel.

Steps involved
Following are the steps that are involved in sending our message with ....etc

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please provide me the simulation of ldpc codes on matlab ....etc

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EG-LDPC Codes for the Erasure Wiretap Channel



Abstract

The wiretap channel model, proposed by Wyner,
has been studied by various authors from the perspectives of
security, reliability and cryptographic protocols. A basic theme
of these discussions has been information theoretically secure
communication whose degree of secrecy can be theoretically
proved. This paper explains a practical implementation of Euclidean
Geometry (EG) - Low Density Parity Check (LDPC)
codes for wiretap channels of type I an ....etc

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COLOR EDGE DETECTION IN RGB USING JOINTLY EUCLIDEAN DISTANCE AND VECTOR ANGLE


Abstract
Typically, the edge detection problem in color images has
been addressed using the Euclidean Distance or similar
metrics. Recently, the Vector Angle metric was introduced
to use the hue and saturation components in a color image
in order to capture more accurate edge data. However,
both the Euclidean Distance and Vector Angle metrics
have some limitations. Two methods which combine both
m ....etc

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Abstract
Low-density parity-check (LDPC) code, a very promising near-optimal error correction code (ECC), is being widely considered in next generation industry standards. The VLSI implementation of high-speed LDPC decoder remains a big challenge. This paper presents the construction of a new class of implementation-oriented LDPC codes, namely shift-LDPC codes. With girth optimization, this kind of codes can perform as well as computer generated random codes. More importantly, the decoder can be efficiently implemented to obtain very hi ....etc

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I WANT ENERGY EFFICIENT LAYERED ENCODING LDPC PROJECT DOCUMENTATION ,CODE ,RESULTS IMMEDIATELY PLEASE HELP ME
MY MBL NO:9959203690mall] ....etc

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