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A novel method with M-sequence code in optical code-division multiple-access (OCDMA) network, called pseudo-random number mapping/coding (PRNMC) algorithm, includes chaos equation, HCC/EHCC algorithm, two mapping methods. An approximately symmetric scheme is used to transmit and receive the secret key in private channel from encoder to decoder. By combining those algorithms appropriately, the security...
With the integration of heterogeneous network protocols, roaming among different networks becomes feasible. The subjects with most attention are the guaranteed quality of services (QoS) and the handoffs without disconnections. This paper proposes a roaming node encoding algorithm in wireless communications, in order to define nested network nodes, without duplicate encodings, and to rapidly confirm...
The wireless network environment in the future is going to include various heterogeneous wireless networks. In a heterogeneous wireless network environment, vertical handoff processes caused by the movement of users are inevitable. However, the research related to how to achieve seamless vertical handoff and improve QoS guarantees in today's heterogeneous wireless networks is still something to work...
With the popularization of the wireless and wired networks, this paper will regard WiFi, WiMAX and CATV (DOCSIS) as the research objects, focus on the relevant technology of seamless layer 2 framework for heterogeneous networks. Seamless communication is the most important topic of this paper, beside it, routing cost and QoS guarantees, will also be important problems that must be considered in the...
Instead of traditionally (globally) adiabatic evolution algorithm for unstructured search, we focus on the structured adiabatic quantum search by nesting a partial search over a reduced set of variables into a global search for solving an optimization problem on adaptive support vector regression (ASVR) yielding an average complexity of order radicnalpha, with alpha<1, compared with a quadratic...
For the mobile communication system in the feature, with the improvement of the transmission bandwidth, more and more new services will be developed. And the different kinds of services have different quality demands. In order to increase the convenience of wireless communication, the service range must be broadened. Unfortunately, the transmission range increased, the transmission quality will be...
A modified scheme in probabilistic packet marking (PPM) for IP traceback against distributed denial-of-service attack is presented. This method, ID-based PPM, is proposed to improve the original PPM's complexity of fragments combination through clustering these fragments in advance. Furthermore, by reducing the time of fragments combination, the attacking path reconstruction and attack response time...
A hybrid BPNN-weighted grey-C3LSP prediction (BWGC) is used for resolving the overshooting phenomenon significantly; however, it may lose the localization once volatility clustering occurs. Thus, we propose a compensation to deal with the time-varying variance in the residual errors, that is, incorporating a non-linear generalized autoregressive conditional heteroscedasticity (NGARCH) into BWGC, and...
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