期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Blind recognition of k/n rate convolutional encoders from noisy observation 被引量:14
1
作者 Li Huang Wengu Chen +1 位作者 Enhong Chen Hong Chen 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2017年第2期235-243,共9页
Blind recognition of convolutional codes is not only essential for cognitive radio, but also for non-cooperative context. This paper is dedicated to the blind identification of rate k/n convolutional encoders in a noi... Blind recognition of convolutional codes is not only essential for cognitive radio, but also for non-cooperative context. This paper is dedicated to the blind identification of rate k/n convolutional encoders in a noisy context based on Walsh-Hadamard transformation and block matrix (WHT-BM). The proposed algorithm constructs a system of noisy linear equations and utilizes all its coefficients to recover parity check matrix. It is able to make use of fault-tolerant feature of WHT, thus providing more accurate results and achieving better error performance in high raw bit error rate (BER) regions. Moreover, it is more computationally efficient with the use of the block matrix (BM) method. © 2017 Beijing Institute of Aerospace Information. 展开更多
关键词 Cognitive radio CONVOLUTION Convolutional codes Error correction Hadamard matrices Hadamard transforms Linear transformations Mathematical transformations Matrix algebra signal encoding
在线阅读 下载PDF
The Performance Analysis of Traffic Channel Coding in Digital Trunking System 被引量:1
2
作者 Tan Xuezhi, Su Min & Zhang Naitong Communication Research Center of Harbin Institute of Technology, 150001, P R China 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2001年第2期30-35,共6页
The encoding and decoding processes of traffic channel in digital trunking system are studied. On the basis of computer simulation, the BER (bit error ratio) with different RCPC decoding step is analyzed. As a result,... The encoding and decoding processes of traffic channel in digital trunking system are studied. On the basis of computer simulation, the BER (bit error ratio) with different RCPC decoding step is analyzed. As a result, the optimal RCPC decoding step is provided, which gives essential theoretical evidences for the implementation of digital trunking system. 展开更多
关键词 Bit error rate Communication channels (information theory) Quadrature phase shift keying signal encoding Telecommunication traffic
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部