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The Design of WLAN Wireless Access Protocol based on Certified NFC
Jinjin Pan,YunLi,ZhigangJIN,Xunjun Wang 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.1
Aiming at the problem of the security of the authentication mode of WLAN wireless access certification, this paper proposes a WLAN wireless access protocol based on NFC certification. The protocol adopts the Diffie-Hellman algorithm established in the unreliable air channel as anonymous AES encryption NFC security tunnel of decryption algorithm, and then using the public key password authentication mode to carries The non anonymous authentication out for the user applying for certification, while determines the conformance certification sides AES key. By shading Petric network modeling, experimental simulation proves that the protocol can effectively resist illegal access to attack and eavesdropping attacks.
Optimal Ad Hoc Power Control Algorithm Based on Outage Probability
YunLi,Shanlin Sun,Xunjun Wang,Zhiyan Sun 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.3
Due to the question about the distribution of the randomness, mobility and mutual interference between nodes in the wireless networks may be difficult to achieve power control accurately. Therefore, propose a power control algorithm based on minimizing interrupt probability. The algorithm which be based on random geometric network model, under ensuring receiving in the receiver by getting the SIR value, adjusts transmit power. Simulation results show that the algorithm not only can solve the problem of the distribution of the nodes in a wireless net- work, can also according to the channel decline, transmitter was adjusted dynamically in real time. Deduce approximate expression of Interrupt probability transmission capacity. Under meet minimum interrupt probability and maximum transmission capacity, deduce power control expression. By this algorithm, the outage probability decreased by 14.8%, the transmission capacity is increased by 15.6%.
Relay selection and Optimization algorithm of Power allocation based on Channel Delay for UWSN
YunLi,Zhigang Jin,Xunjun Wang,Zixin Liu 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.2
In the light of the characteristics of random change that underwater sensor change by time, space and frequency, select the best relay node to improve communication quality and get the diversity gain. A new optimal relay selection method is proposed in this paper, by considering two indexes synthetically that channel gain and underwater acoustic communication long time delay to select the best relay node. Based on the best relay node and minimization of bit error rate to take optimal power allocation of source node and relay node to realize network error rate’s reduction of 1.81 dB so then improve the overall performance of the network.