Báo cáo hóa học: " Research Article A Reconfigurable GNSS Acquisition Scheme for Time-Frequency Applications" pot

... modification of the basic acquisition scheme that allows a fast and efficient TF analysis for interference detection. The method reuses the resources already available for the acquisition stage and the ... reuse the hardware already available in a GNSS receiver for TF applications. The pro- posed method is suitable for all acquisition schemes and its effectiveness has been p...

Ngày tải lên: 22/06/2014, 01:20

... the bigram-PLSA models an unfair advantage by allowing them to adapt the model parameters to the test data. Nevertheless, we applied it to avoid overfitting. To have a valid comparison, the PLSA and ... in language modeling. Latent topic modeling approaches such as Latent Semantic Analysis (LSA) [1, 2], Probabilistic Latent Semantic Analysis (PLSA) [3], and Latent Dirichlet Allocation (LDA)...

Ngày tải lên: 21/06/2014, 08:20

... Speed-Adaptive Media-Data Encryption (SAME) Statistical char acteristics of compressed audio/video data are dramatically different from the ones of text data, because the variable-length codes and other ... Journal on Wireless Communications and Networking 5 original data. Statistical analysis in [ 12] shows that the coded data have high randomness at the byte level. Based on this statistical...

Ngày tải lên: 21/06/2014, 11:20

... N bg can betreatedaslog-normalRVwithparametersofμ n = ln(kTWϕ)andσ n = 0. Note that N bg has a constant value, and this is accounted for by the fact that the defined RV has zero variance. This particular ... contributions have focused on a particular performance measure such as coverage probability or outage probability, an explicit derivation of the probability distribution for signal...

Ngày tải lên: 21/06/2014, 18:20

... ΔPSNRY versus subsample ratio based on Ta bl e 7 and shows that all tested sequences can satisfy to maintain the visual quality 2 EURASIP Journal on Advances in Signal Processing called the A- TDB algorithm, ... subsample approach is feasible and scalable for either hardware or software implementation. The proposed approach is not limited for FSBM, but valid for all kinds of FBMAs. The...

Ngày tải lên: 21/06/2014, 08:20

... cooperate with people as capable partners, that are able to learn from natural human instruction and that are intuitive and engaging for people to interact with, but that are also able to simultaneously ... left images of several image pairs of an image sequence perceived from a stationary binocular camera head. Although the index values below each image are not consecutive, all image pai...

Ngày tải lên: 21/06/2014, 09:20

... slots before issuing a DSC packet. Once again, it Table 1: Relevant simulation parameters. CSMA/CA PHY layer and 2C-WSN Parameter Value Parameter Value macMinBE 3 Radio datarate 250 kbps macMaxBE ... ends before attempting channel access. Thus, the 2C algorithm is able to provide guarantees for fair channel access. Each station participating in a CRI maintains a counter that controls...

Ngày tải lên: 21/06/2014, 11:20

... safe state to current attacked state; (3) from previous attacked state to current safe state; and (4) from previous attacked state to current attacked state. Although the historical data obtained ... some attacked locators based on the temporal and spatial properties, it knows that it is currently in an attacked state. Then, it checks its historical data and treats all those detected attacked...

Ngày tải lên: 21/06/2014, 11:20

... Wireless Systems, Barcelona, Spain, May 2010. [20] I. Askoxylakis, K. Markantonakis, T. Tryfonas, J. May, and A. Traganitis, A face centered cubic key agreement mechanism for mobile ad hoc networks,” ... authentication mecha- nism. A simple approach of a password-based authentication scheme could be the use of sufficiently large and randomly generated data strings employed as passwor...

Ngày tải lên: 21/06/2014, 11:20

... the network performance parameters are evaluated, for example, packet delay and loss ratio. 5.1. Raw Signal Level. It is fundamental for HINT to acquire the internal signals accurately inside a sensor ... Conference on Sensor and Ad Hoc Communications and Networks (SECON ’04), Santa Clara, Calif, USA, October 2004. [7] S. Park, A. Savvides, and M. B. Srivastava, “SensorSim: a simulat...

Ngày tải lên: 21/06/2014, 17:20