neurologist
发表于 2025-3-23 10:39:01
Concatenated codes,y good, in the sense that their minimum Hamming distances (MHD) can be made as large as we want, by sufficiently increasing the degree of the generator polynomials. The complexity of the decoders is unfortunately unacceptable for the degrees of polynomials that would guarantee the MHD required by pr
影响
发表于 2025-3-23 14:49:04
Convolutional turbo codes,ch provides the performance of four RSC codes with respective memories . 2. 4. 6 and 8, for rates 1.2, 2.3, 3.4 and 4.5, decoded according to the MAP algorithm. For each of the rates, the error correction capability improves with the increase in ., above a certain signal to noise ratio that we can a
dithiolethione
发表于 2025-3-23 18:26:26
LDPC codes, in Gallager’s thesis at the beginning of the 60s . Apart from the hard input decoding of LDPC codes, this thesis proposed iterative decoding based on belief propagation (BP). This work was forgotten for 30 years. Only a few rare studies referred to it during this dormant period, in particular
勤勉
发表于 2025-3-23 22:42:46
Turbo codes and large spectral efficiency transmissions,sequently, we wish to maximize the ratio of the useful data rate to bandwidth, that is to say, the spectral efficiency of the transmissions. To do this, it seems natural to couple digital modulations having large constellations with powerful high-rate error correcting codes like turbo codes.
Mets552
发表于 2025-3-24 03:58:43
The turbo principle applied to equalization and detection, and decode, making it possible to approach Shannon’s theoretical limit very closely, were at last available. However, the impact of this discovery was not limited to one single coding domain. More generally, it gave birth to a new paradigm for designing digital transmission systems, today commonly
freight
发表于 2025-3-24 08:29:13
results characteristic of their correcting power...The authors are researchers and lecturers recognised for their expertise in the field of encoding and decoding algorithms and associated circuits. Codes978-2-8178-0038-7978-2-8178-0039-4
充气女
发表于 2025-3-24 12:39:41
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惊奇
发表于 2025-3-24 18:41:32
The turbo principle applied to equalization and detection,the two directions”, between these different processing operations. All of the information available is thus taken into account in solving the global problem and a consensus can be found between all the elementary processing operations in order to elaborate the final decision.
esculent
发表于 2025-3-24 22:30:25
Clemente Galdi,Stanislaw Jareckiation is frequency multiplexing which enables several simultaneous communications on the same wideband (cable or optical fibre) support, that are easily separated due to the fact that they each occupy a specific bandwidth, not connected to that of any other.
担忧
发表于 2025-3-25 00:36:03
Data Security and Storage Module in Cloud,the two directions”, between these different processing operations. All of the information available is thus taken into account in solving the global problem and a consensus can be found between all the elementary processing operations in order to elaborate the final decision.