عنوان المقالة: Design and Evaluation of Adaptive (Serial/Parallel) Concatenated Convolutional Codec
أ د خميس عواد زيدان | Khamis A. Zidan | 10541
نوع النشر
مجلة علمية
المؤلفون بالعربي
المؤلفون بالإنجليزي
Khamis A. Zidan, Raghad Z.Yousif
الملخص الانجليزي
In this paper, parallel Concatenated Convolutional Codes (PCCCs) is modeled as a special case of Serial Concatenated Convolutional Code (SCCCs). Consequently, resulting in Adaptive (parallel/serial) concatenated convolutional code in which the same encoder and decoder can be used for both types of concatenated convolutional codes. To achieve this goal some interleaver restrictions are made to modify the classical structure of Semi-Random interleaver. The decoding stage is based on classical SCCC iterative decoder, with added interleaver restrictions. The core of decoder structure is a soft-input soft-output (SISO) a posteriori probability (APP) module. Log-Map is used as (APP) for its superior performance. This work also presents some classical structured interleavers such as Block and Circular interleavers, adding to them the presented restrictions for sake of comparison. The resulted performance curves from computer simulation, shows that degradation signal per bit energy to noise ratio (Eb/No) for the proposed decoder as compared to the classical PCCC is no more than 0.45 dB at less than 10-5 bit error rates (BER),over Fading channel in worst case.
تاريخ النشر
02/06/2006
الناشر
Journal of Engineering and Development,
رقم المجلد
10
رقم العدد
2
ISSN/ISBN
1813-7822
رابط خارجي
https://www.iasj.net/iasj/article/10101
الكلمات المفتاحية
Concatenated Convolutional Code
رجوع