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In this paper, we propose new demapping scheme for the 16-APSK modulation, which reduces the computational complexity of demapping process. Compared to existing soft demapping methods, which calculate a decision metric for each constellation point, and hard demapping, which need a detailed look-up table, the new technique needs a short look-up table and no decision metric is needed to be calculated,...
This paper proposes a new survivable algorithm named sub-path protection based on auxiliary virtual topology (SPAVT) to tolerate the single-link failure in WDM optical networks. According to the protection-switching time constraint, SPAVT constructs the virtual topology. Then, it only needs to run one time of routing algorithm to find the feasible virtual route in virtual topology. Simulation results...
This paper considers a secure and practical CRT-RSA signature implementation resistant to fault attacks (FA) and power attacks including simple power analysis (SPA) and differential power analysis (DPA). In 2005, Giraud proposed a CRT-RSA scheme secure against SPA and FA. Afterwards, Kim and Quisquater presented an efficient scheme which can prevent all SPA, DPA, and FA. In this paper, we point out...
The number of output sequences has been proposed as a characteristic of binary sequence generators for cryptographic application, but in general most of binary sequence generators have single number of output sequences. In this paper, we propose a generalized memory sequence generator (GMEM-BSG), which is an improved Golic's memory sequence generator (MEM-BSG) and which has a large number of output...
This paper presents an efficient integration method on metadata of Web resources for realizing the semantic Web. Since the semantic Web must accept and understand all Web information resources that are represented with the other methods, an integration of the metadata has become an issue. Our method treats two representative standardized ontology schemes, Topic Maps of ISO/IEC JTC1 and RDF/RDF schema...
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