A feedback-based secrecy coding scheme using polar code over wiretap channels

Author(s):  
Liuyihan Song ◽  
Lei Xie ◽  
Huifang Chen ◽  
Kuang Wang
2017 ◽  
Vol 11 (15) ◽  
pp. 2357-2361 ◽  
Author(s):  
Reza Hooshmand ◽  
Mohammad Reza Aref

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4135
Author(s):  
Bin Wang ◽  
Jun Deng ◽  
Yanjing Sun ◽  
Wangmei Guo ◽  
Guiguo Feng

In wireless body area networks (WBANs), the secrecy of personal health information is vulnerable to attacks due to the openness of wireless communication. In this paper, we study the security problem of WBANs, where there exists an attacker or eavesdropper who is able to observe data from part of sensors. The legitimate communication within the WBAN is modeled as a discrete memoryless channel (DMC) by establishing the secrecy capacity of a class of finite state Markov erasure wiretap channels. Meanwhile, the tapping of the eavesdropper is modeled as a finite-state Markov erasure channel (FSMEC). A pair of encoder and decoder are devised to make the eavesdropper have no knowledge of the source message, and enable the receiver to recover the source message with a small decoding error. It is proved that the secrecy capacity can be achieved by migrating the coding scheme for wiretap channel II with the noisy main channel. This method provides a new idea solving the secure problem of the internet of things (IoT).


1996 ◽  
Vol 10 (2) ◽  
pp. 205-218
Author(s):  
Henry Ker-Chang Chang ◽  
Chung-Yu Liou
Keyword(s):  

2010 ◽  
Vol 15 (2) ◽  
pp. 142-151 ◽  
Author(s):  
Wondimu Ahmed ◽  
Greetje van der Werf ◽  
Alexander Minnaert

In this article, we report on a multimethod qualitative study designed to explore the emotional experiences of students in the classroom setting. The purpose of the study was threefold: (1) to explore the correspondence among nonverbal expressions, subjective feelings, and physiological reactivity (heart rate changes) of students’ emotions in the classroom; (2) to examine the relationship between students’ emotions and their competence and value appraisals; and (3) to determine whether task difficulty matters in emotional experiences. We used multiple methods (nonverbal coding scheme, video stimulated recall interview, and heart rate monitoring) to acquire data on emotional experiences of six grade 7 students. Concurrent correspondence analyses of the emotional indices revealed that coherence between emotional response systems, although apparent, is not conclusive. The relationship between appraisals and emotions was evident, but the effect of task difficulty appears to be minimal.


1999 ◽  
Author(s):  
Barbara H. Fiese ◽  
Arnold J. Sameroff

2012 ◽  
Vol E95-B (1) ◽  
pp. 254-262
Author(s):  
Yoshitoshi YAMASHITA ◽  
Eiji OKAMOTO ◽  
Yasunori IWANAMI ◽  
Yozo SHOJI ◽  
Morio TOYOSHIMA ◽  
...  

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