Báo cáo hóa học: "Research Article A Diversity Guarantee and SNR Performance for Unitary Limited Feedback MIMO Systems" ppt

... 2008, Article ID 594928, 15 pages doi:10.1155/2008/594928 Research Article A Diversity Guarantee and SNR Performance for Unitary Limited Feedback MIMO Systems Bishwarup Mondal and Robert W. Heath ... results show that the approximation in (27) is reasonably accurate even at small values of N and provides a practical characterization of performance. 4.5. Obser...

Ngày tải lên: 22/06/2014, 06:20

... Diversity Guarantee and SNR Performance for Unitary Limited Feedback MIMO Systems Bishwarup Mondal and Robert W. Heath Jr. Department of Electrical and Computer Eng ineering, The University of Texas at ... precoding is the transmit array gain which is also a ected due to precoder quantization. An analytical characterization of the loss in ar- ray gain due to quantizat...

Ngày tải lên: 22/06/2014, 19:20

... filter was varied systematically, and an ideal target signal detection algorithm performance was mimicked by allowing the filter adapt only in the absence of the target signal. Delay D3 was set ... was conveniently available for measurements and its acoustic properties were reasonably close to that of an imaginary average room found in an earlier study [10], and to the simulated rever...

Ngày tải lên: 22/06/2014, 01:20

... both real and imaginary parts as in CMA and MMA, only one dimension, the real or imaginary part, is considered in SCMA, which makes it very attractive for practical implementation especially when ... 1343–1348, 1997. [16] C. B. Papadias and A. J. Paulraj, A constant modulus al- gorithm for multiuser signal separation in presence of delay spread using antenna arrays,” IEEE Signal P...

Ngày tải lên: 22/06/2014, 06:20

... 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 (L...

Ngày tải lên: 21/06/2014, 08:20

... subsample subsample subsample subsample subsample subsample subsample (70%) ratio ratio ratio ratio ratio ratio ratio ratio PSNRY ΔPSNRY ΔPSNRY ΔPSNRY ΔPSNRY ΔPSNRY ΔPSNRY ΔPSNRY ΔPSNRY Dancer ... 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 proposed ap...

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 ... have implemented two basic behaviors in this stage: a visual natural landmark detector and a human gesture recognition behavior. These behaviors are the responsible for provi...

Ngày tải lên: 21/06/2014, 09:20

... 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 ... level. Based on this statistical characteristic of media data, we extend the idea of VEA algorithm to a new method that uses traditional block cipher to encry pt a part of data (part...

Ngày tải lên: 21/06/2014, 11:20

... 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 ... complete a father -and- child association, AAO. Recall that this operation consists of exchanging four packets: DSC, DLY, ACK S ,and ACK F . Several trials were conducted placing the node...

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,” ... following: there are two parties A, B that share a password P.Bothpartiesuse a suitable symmetric cryptosystem but entity A has also the ability to create a random asymmetric...

Ngày tải lên: 21/06/2014, 11:20