Báo cáo hóa học: " Research Article Survey of Channel and Radio Propagation Models for Wireless MIMO System" docx

... Wireless Communications and Networking Volume 2007, Article ID 19070, 19 pages doi:10.1155/2007/19070 Research Article Survey of Channel and Radio Propagation Models for Wireless MIMO Systems P. Almers, 1 E. ... overview of the state -of- the-art radio propagation and channel models for wireless multiple-input multiple-output (MIMO) systems. We di...

Ngày tải lên: 22/06/2014, 22:20

... Processing Volume 2007, Article ID 56215, 8 pages doi:10.1155/2007/56215 Research Article Combining Wavelet Transform and Hidden Markov Models for ECG Segmentation Rodrigo Varej ˜ ao Andre ˜ ao 1 and J ´ er ˆ ome ... approach and the physician (the standard deviation for all recordings is computed as the average of the standard deviations of each recording); (ii) wavefor...

Ngày tải lên: 22/06/2014, 23:20

... proposals for pilot- aided channel estimation schemes for MIMO- OFDM trans- formed the problem of estimating overlapping channels in the estimation of multiple single-input single-output (SISO) OFDM channels. ... Bold capitals and bold face for matrices and vectors, respectively. E y {x} denotes expectation of x over y and |h| and h account for the absolute value a...

Ngày tải lên: 21/06/2014, 11:20

... ϕ,forall Table 1: Direction of measurement and required number of channel uses to estimate all first-hop and second-hop channel coefficients. First-hop channel Second-hop channel Required number of channel ... mixing from baseband to passband and with negative sign when mixing from passband to baseband (e.g., [23]). Consequently, the equivalent complex baseband-to-baseband...

Ngày tải lên: 21/06/2014, 17:20

... critical point of I. Proof. It is obvious that N − ∗ is closed. Exactly as in the proof of 6, Proposition 3.2, by means of Ekeland’s principle, we derive a PS c 2 -sequence {u n }⊂N − ∗ for I. In ... al. 18 for the proof about the decay of positive solution of problem 1.2 which we will use later. Lemma 2.1. Assume a1, f1 and f3 hold. If u ∈ H 1 0 Ω is a positi...

Ngày tải lên: 21/06/2014, 20:20

... 3 A and B and C D EandF Figure 6: An example of hierarchical clustering and selected key- words. Table 3: Examples of selected keywords and clusters. (a) Results for the document “History of characters ... to use a fixed number of candidates because we would have to control the number of candidates so that a sufficient number of candidates was obtained when variable numbers...

Ngày tải lên: 21/06/2014, 20:20

... transforms the existence of solutions of the boundary value problem BVP to the existence of critical points for the functional. Some criteria for the existence of at least one solution and two ... solutions. Acknowledgments This research is partially supported by the NSF of China and NSF of Guangdong Province. References 1 R. P. Agarwal and J. Henderson, “Positive...

Ngày tải lên: 21/06/2014, 20:20

... error of the addition and subtraction is simply the sum of the error of the operands while in the case of multiplication and division, the error of the results also depends on the value of the ... means the sum of the integer and fractional bits of the fixed-point numbers and the width of the mantissa bits in case of the floating-point numbers). Due to the large area...

Ngày tải lên: 21/06/2014, 22:20

... Corporation EURASIP Journal on Wireless Communications and Networking Volume 2008, Article ID 670503, 5 pages doi:10.1155/2008/670503 Research Article Performance of Coded Systems with Generalized Selection ... as turbo codes and product codes. Figures 3–5 show the simulation and analytical results for convolution- ally and 8PSK TCM-coded systems over different Nakagami fad...

Ngày tải lên: 21/06/2014, 22:20

... DSPs exist for redundancy and are not used for signal processing. Five DSPs are used for encoding/decoding, beamforming, calibration, and ranging processing. Two FPGAs perform FFT/IFFT and permutations. ... beamforming scheme addressed the lack of samples in OFDM-based packet communications. The proposed scheme used time and frequency samples for obtaining the statistical pr...

Ngày tải lên: 21/06/2014, 23:20