Báo cáo hóa học: "Research Article LTE Adaptation for Mobile Broadband Satellite Networks" ppt

... Communications and Networking Volume 2009, Article ID 989062, 13 pages doi:10.1155/2009/989062 Research Article LTE Adaptation for Mobile Broadband Satellite Networks Francesco Bastia, Cecilia ... analysis. 2. GPP LTE: Main Features The 3GPP LTE air interface is shortly summarized to ensure self-containment and to provide the perspective for the introduction of advanced s...

Ngày tải lên: 21/06/2014, 23:20

... is particularly important in studying the performance of self- organizing self-configuring networks. For the interference scenario described in the system model, the path loss for the desired path and the path ... flexibility of choosing different distributions for the desired link and interfering link, such as the Rayleigh for the channel envelope of the desired link, and Rician for t...

Ngày tải lên: 21/06/2014, 22:20

... Corporation EURASIP Journal on Advances in Signal Processing Volume 2008, Article ID 457307, 12 pages doi:10.1155/2008/457307 Research Article Code Design for Multihop Wireless Relay Networks Fr ´ ed ´ erique Oggier ... nodes are used for one hop. We address the problem of code design when relay nodes may be used for more than one hop. We consider as a protocol a more elaborated ver...

Ngày tải lên: 22/06/2014, 19:20

... only, which is equivalent to performing energy detection. Detector performance is maximized for asmallN b value, which implies that performance can be maximized for a limited hardware complexity. ... the cyclostationary detector performs according to N b . For this purpose, the probability of detection is computed as a function of the SNR under AWGN conditions for various N b values....

Ngày tải lên: 21/06/2014, 11:20

... 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

... solution for (23). For a nondedicated feedback link, or in other words for PF bitwords, the solution of (23) is given by the Huffman code [21]. For a dedicated feedback link, or in other words for ... BER performance as the 4 bit memoryless VQ. However, for less correlated channels the performance drops to the same performance as the 2 bit memoryless VQ. Different design approaches...

Ngày tải lên: 21/06/2014, 22:20

... Corporation Advances in Difference Equations Volume 2007, Article ID 78160, 18 pages doi:10.1155/2007/78160 Research Article Exponential Stability for Impulsive BAM Neural Networks with Time-Varying ... chemistry, biology, population dynamics, and industrial robotics. Some results for impulsive neural networks have been given, for example, see [13–22] and references therein. It is we...

Ngày tải lên: 22/06/2014, 19:20

... decisions that can affect its performance sig- nificantly. Wavelet transform is more forgiving than other methods when the form of the signal is not clearly known. It is ideal for handling phenomena with ... low-frequency information is akin to filtering through a highpass filter and a lowpass filter. In- deed, wavelet and scaling functions can be interpreted as im- pulse responses of highpass a...

Ngày tải lên: 22/06/2014, 20:20

... values for the noise standard deviation: σ = 5, 15, 25, 35. For every value σ, 25 tests have been performed based on different noise realizations. Every test involves performing a DWT for the ... the parameters of these classes of functions allow for a fine tuning of the data adaptation. This adaptation is nonparametric because no prior information about the signal is taken into acco...

Ngày tải lên: 21/06/2014, 20:20

... areas are the same for the two cases. For the uplink, the rates are that for the MIMO multiple access channel (MIMO MAC), whose forms are identical to those for the downlink but for the proper uplink channel ... the need for the base stations to share information. It may also make handoff easier by allowing for a buffer zone where which base station a mobile is associated with i...

Ngày tải lên: 21/06/2014, 22:20