Báo cáo hóa học: " Key Management for Secure Multicast over IPv6 Wireless Networks" potx

... novel solution for secure multicast over IPv6 wireless networks. Our key management framework includes two scenarios for securely distributing the group key and rekey messages for joining and ... OUR APPROACH Our key management framework includes two scenarios for secure multicast over wireless network. One is key distri- bution on decentralized architect...

Ngày tải lên: 22/06/2014, 22:20

... in [26] can significantly improve the error performance over the schemes in [25]. Unfortunately, closed-form BER expressions are only available for the single-relay and two-relay net- works in ... destination then performs selection combining for the detection of transmitted information. The average end-to-end bit-error-rate (BER) is analytically determined in a closed-form expression....

Ngày tải lên: 20/06/2014, 22:20

... before and after the signal frame, we evaluate the result of the NHA to consider the overlap of the signal frames. We then determined whether the same tendency was observed for each method, for ... suitable values for each signal waveform and compared the analysis methods with the most suitable segmental SNR. For the case of white Gaussian noise, we use | ˆ D(k)| that is constant for...

Ngày tải lên: 20/06/2014, 22:20

... filtering distribution. For any t ∈ N and for any λ 0:t ∈ Z t+1 ,denote γ t (λ 0:t ) def =    f (  y 0 |λ 0 ) f  λ 0  for t = 0, f (  y t |λ 0:t ,  y 0:t−1 ) f (λ t |λ 0:t−1 )fort>0. (38) With ... bound over the considered SNR. Figure 4 shows the BER performance of the GS receiver versus the number of particles at SNR = 20 dB and δ = 1. Also shown in this figure is the BER pe...

Ngày tải lên: 23/06/2014, 01:20

... reasoning for this information is that the aggregate input rate of ith location R i should be compliant with per-location por- tion of link capacity even when wireless link errors degrade wireless ... location information to provide a service differ- entiation in IEEE 802.11-based Hot Spot networks. We believe that the proposed scheme is very appropriate for providing a QoS scheme fo...

Ngày tải lên: 20/06/2014, 22:20

... τ 0 >0,τ j >0forevery j ∈ J and τ i =0 for every i ∈ K \J . Hence, (35) yields l 0 =0,l j = 0for every j ∈ J and l i ≥ 0forevery i ∈ K \J .Also,forevery j ∈ J , (32) yields μ j = 1 r j j , (39) and for ... chosen such that for every k ∈ J ,Actionk is chosen for a dura- tion of τ k = d k − τ 0 r 0 k r k k , (15) and Action 0 is selected for a period of τ 0 =max i∈K \J d i r 0...

Ngày tải lên: 20/06/2014, 22:20

... reasoning for this information is that the aggregate input rate of ith location R i should be compliant with per-location por- tion of link capacity even when wireless link errors degrade wireless ... load information compensates unsuccessful transmissions due to wireless link errors by lowering per-location target load. 6.1.3 Performance in the presence of mobility As the next perfor...

Ngày tải lên: 21/06/2014, 00:20

... test for variance changes requires uncorrelated data. We, therefore, choose the DWT with highest P-value among those packets of the tree for which the null hypothesis of the Ljung-Box test for ... of change points, in mean and in variance. Results for MWICSS and MWSIC are for a threshold level 2 and window size 128, those for MWWJ are for window size 128. In these plots, the sol...

Ngày tải lên: 21/06/2014, 22:20

... r/( |P nd | max − 1). Moreover, given the requirement on the route security and performance, one can check if it is realizable or too stringent by using the above formula before searching for the routing ... and/or performance in the worst- case scenarios. 9. Conclusion In this paper, we address the fundamental problem of how to choose secure and reliable paths in wireless networks. We...

Ngày tải lên: 21/06/2014, 23:20

... probability and the ov erlapping time as the metrics for primary user performance. Meanwhile, [14] presents a price-based spectrum management frame- work for cognitive radio networks. The framework mod- els ... framework for opportunistic spectrum management in cognitive ad hoc networks. EURASIP Journal on Wireless Communications and Networking 2011 2011:188. Khattab et al. EURASI...

Ngày tải lên: 20/06/2014, 22:20