Báo cáo hóa học: " Research Article Clear Channel Assessment in Integrated Medical Environments" doc

... and Networking Volume 2008, Article ID 821756, 8 pages doi:10.1155/2008/821756 Research Article Clear Channel Assessment in Integrated Medical Environments Bin Zhen, 1 Huan-Bang Li, 1 Shinsuke Hara, 2 and ... information [2–5]. They are becoming more and more popular in hospitals and homes. The use of complementary heterogeneous WLANs and WPANs in ISM band in the inte...

Ngày tải lên: 22/06/2014, 06:20

... Networking 11 fail to resend any messages when users are off line, despite their successful interception. Even though the message in Step 1 is intercepted and resent, attackers will obtain no valid information ... Soini, L. Syd ¨ anheimo, and M. Kivikoski, “Use and interface definition of mobile RFID reader integrated in a smart phone,” in Proceedings of the 9th International Symposium...

Ngày tải lên: 21/06/2014, 11:20

... U  \ W. 3.4 Let e ∈ int D be a fixed point. Set β 0  inf λ∈Λ λ, e. Since Λ is w ∗ -compact, the in mum is attained at a point of Q. Namely, β 0  min λ∈Q λ, e. Clearly, λ, e > 0 for ... weak sharp minimum in general mathematical program problems was first introduced by Ferris in 1. It is an extension of sharp minimum in 2. Weak sharp minima play important roles in the...

Ngày tải lên: 21/06/2014, 11:20

... planning module (LAPM) and the global planning module compo- nent (GPMC) in the planning layer. The LEPM is responsible for choosing a good path inside the local sensor area while Hindawi Publishing ... goal point. Imagine a person walking into a tightened band amid the start and goal points. The elastic band is repelled as long as the person keeps on walking. At some point a path behind th...

Ngày tải lên: 22/06/2014, 23:20

... driving noise estimated simultaneously 2 Working in the time-domain, reducing complexity in comparison with the schemes in frequency-domain 3 Without pilot symbol, saving bandwidth 4 Including ... RML Channel Estimation in the Training Mode The proposed RML channel estimator is developed to eliminate the effect of colored noise in this section. It works in the time domain, that...

Ngày tải lên: 21/06/2014, 08:20

... In Figure 4, the link gains h A1 and h B1 are the same. In this case, HMC dominates all other strategies. In Figure 5, the two link gains, h A1 and h B1 ,are not equal. In this case, HLC dominates ... linear combination is then transmitted in the second stage. Since both relays know the message of terminal A, the two-relays can jointly re-encode the message of terminal A using some...

Ngày tải lên: 21/06/2014, 17:20

... known training sequences to adaptively extract channel information. The main drawback with this approach is bandwidth consuming due to training. To overcome this resource wasting, blind equalization ... per- formance in estimating {s k−δ }, there exists a blind equalizer in its immediate neighborhood. Using the converged blind equalizer w δ as an estimate of the MMSE equalizer results...

Ngày tải lên: 21/06/2014, 22:20

... Although the DMT subchannels on a single line are independent under the conditions described in Section 2.1, the electromagnetic coupling between the lines of the binder results in frequency- dependent ... = . . . . . . Figure 4: MIMO channel matrix H with dimension U × U × K, where U is the number of lines in the cable binder and K is the number of subchannels in a MIMO group. In...

Ngày tải lên: 21/06/2014, 22:20

... a linear channel with a colored source. In this paper, we prove that colored inputs will cause the equalizer to incorrectly converge due to inadequate constraints. We also introduce a new blind ... optimization requires channel information that is not available. In order to estimate the channel information, we need to resort to the Capon max/min method. The minimum output variance i...

Ngày tải lên: 21/06/2014, 22:20

... points. In the case that all entries in λ ∗ are equal, all permutations π are optimal, resulting in K! points r wsr (λ ∗ , π). As a consequence, enumerating all K! points first and then selecting ... cross-layer optimisation. In particular, the performance gain achieved by both PB and IEA increases with a. This behaviour can be explained as follows. With increasing a, the interval in...

Ngày tải lên: 21/06/2014, 22:20