The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kami menyiasat kod konvolusi terpenggal dengan ciri-ciri kod blok untuk sistem komunikasi berasaskan blok. Tiga kaedah pemangkasan (pemangkasan langsung, penamatan ekor, dan kaedah pengikatan ekor) telah diperkenalkan oleh penyelidik lain. Setiap daripada tiga kaedah mempunyai kelemahan: kaedah pemangkasan terus mengurangkan jarak minimum, kaedah penamat ekor menggunakan bit ekor, dan kaedah menggigit ekor hanya boleh digunakan dengan menggunakan penyahkod yang rumit. Walaupun kaedah menggigit ekor memberikan prestasi BER yang lebih baik daripada dua kaedah lain, kita tidak boleh menggunakan kaedah menggigit ekor dalam semua situasi. Kadangkala, kod konvolusi yang menggigit ekor tidak wujud. Wang et al. membentangkan dua syarat yang diperlukan untuk kewujudan kod convolutional menggigit ekor kod convolutional sistematik rekursif kadar-1/2. Dalam makalah ini, kami menganalisis pengekod kod konvolusi sebagai sistem invarian masa linear, dan membentangkan dua teorem dan enam akibat mengenai kewujudan kod konvolusi yang menggigit ekor. Keadaan kewujudan ini boleh disesuaikan dengan semua kod konvolusi. Dalam sistem komunikasi yang menggunakan kod konvolusi terpenggal, keputusan ini boleh digunakan untuk menentukan kaedah pemotongan.
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Salinan
Young KIM, Pil Joong LEE, "Existence Condition for Tail-Biting Convolutional Codes" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 11, pp. 2362-2368, November 2002, doi: .
Abstract: We investigated the truncated convolutional code with the characteristics of a block code for block-based communication systems. Three truncation methods (direct truncation, tail-terminating, and tail-biting method) were introduced by other researchers. Each of the three methods has a weakness: the direct truncation method decreases the minimum distance, the tail-terminating method uses tail bits, and the tail-biting method can only be applied by using a complicated decoder. Although the tail-biting method gives a better BER performance than the other two methods, we cannot apply the tail-biting method in all situations. Occasionally, the tail-biting convolutional code does not exist. Wang et al. presented two necessary conditions for the existence of the tail-biting convolutional code of the rate-1/2 recursive systematic convolutional code. In this paper, we analyze the encoder of the convolutional code as a linear time invariant system, and present two theorems and six corollaries on the existence of the tail-biting convolutional code. These existence conditions are adaptable to all convolutional codes. In the communication system using the truncated convolutional code, these results are applicable to determining the truncation method.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_11_2362/_p
Salinan
@ARTICLE{e85-b_11_2362,
author={Young KIM, Pil Joong LEE, },
journal={IEICE TRANSACTIONS on Communications},
title={Existence Condition for Tail-Biting Convolutional Codes},
year={2002},
volume={E85-B},
number={11},
pages={2362-2368},
abstract={We investigated the truncated convolutional code with the characteristics of a block code for block-based communication systems. Three truncation methods (direct truncation, tail-terminating, and tail-biting method) were introduced by other researchers. Each of the three methods has a weakness: the direct truncation method decreases the minimum distance, the tail-terminating method uses tail bits, and the tail-biting method can only be applied by using a complicated decoder. Although the tail-biting method gives a better BER performance than the other two methods, we cannot apply the tail-biting method in all situations. Occasionally, the tail-biting convolutional code does not exist. Wang et al. presented two necessary conditions for the existence of the tail-biting convolutional code of the rate-1/2 recursive systematic convolutional code. In this paper, we analyze the encoder of the convolutional code as a linear time invariant system, and present two theorems and six corollaries on the existence of the tail-biting convolutional code. These existence conditions are adaptable to all convolutional codes. In the communication system using the truncated convolutional code, these results are applicable to determining the truncation method.},
keywords={},
doi={},
ISSN={},
month={November},}
Salinan
TY - JOUR
TI - Existence Condition for Tail-Biting Convolutional Codes
T2 - IEICE TRANSACTIONS on Communications
SP - 2362
EP - 2368
AU - Young KIM
AU - Pil Joong LEE
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2002
AB - We investigated the truncated convolutional code with the characteristics of a block code for block-based communication systems. Three truncation methods (direct truncation, tail-terminating, and tail-biting method) were introduced by other researchers. Each of the three methods has a weakness: the direct truncation method decreases the minimum distance, the tail-terminating method uses tail bits, and the tail-biting method can only be applied by using a complicated decoder. Although the tail-biting method gives a better BER performance than the other two methods, we cannot apply the tail-biting method in all situations. Occasionally, the tail-biting convolutional code does not exist. Wang et al. presented two necessary conditions for the existence of the tail-biting convolutional code of the rate-1/2 recursive systematic convolutional code. In this paper, we analyze the encoder of the convolutional code as a linear time invariant system, and present two theorems and six corollaries on the existence of the tail-biting convolutional code. These existence conditions are adaptable to all convolutional codes. In the communication system using the truncated convolutional code, these results are applicable to determining the truncation method.
ER -