نتایج جستجو برای: convolutional code
تعداد نتایج: 196328 فیلتر نتایج به سال:
A new class of (2k, k, 1) convolutional codes is proposed based on the method that creating long codes by short ones in this paper, by embedding (2k, k) double loop cyclic codes in (2, 1, 1) convolutional codes. The structural mechanism of the codes is revealed by defining a state transition matrix and using algebraic method. It is then shown that the code structure is excellent in both proport...
This chapter describes the main architectures proposed in the literature to implement the channel decoders required by the WiMax standard, namely convolutional codes, turbo codes (both block and convolutional) and LDPC. Then it shows a complete design of a convolutional turbo code encoder/decoder system for WiMax.
Unit memory codes and in particular, partial unit memory codes are reviewed. Conditions for the optimality of partial unit memory codes with degree k− 1 are given, where optimal codes are the codes having the maximum free distance among all codes of the same parameters k,n and degree μ. A binary construction of unit memory codes with μ = k − 1 is discussed for the cases that satisfy the optimal...
In this note we introduce the concept of group convolutional code. We make a complete classification of the minimal S 3-convolutional codes over the field of five elements by means of Jategaonkar's theorems .
Two-dimensional convolutional codes are considered with code sequences having compact support indexed in N2 and taking values in Fn , where F is a finite field. Input-state-output representations of these codes are introduced and several aspects of such representations are discussed. Constructions of such codes with a designed distance are also presented.
This thesis explores error-correcting codes which can be used in physical unclonable function (PUF) applications. We investigate linear block codes and concatenated codes, which are traditionally used with PUFs, and compare them to convolutional codes using the criteria of error correction capability, decoder hardware requirements, flexibility of code parameters, and code rate. The application ...
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