Báo cáo hóa học: " Research Article Carrier Frequency Offset Estimation and I/Q Imbalance Compensation for OFDM Systems" pot

... pages doi:10.1155/2007/45364 Research Article Carrier Frequency Offset Estimation and I/Q Imbalance Compensation for OFDM Systems Feng Yan, Wei-Ping Zhu, and M. Omair Ahmad Centre for Sig nal Processing and Communications, ... model with the carrier frequency off- set and I/Q imbalance is first addressed. A frequency estima- tion algorithm and an I/Q...

Ngày tải lên: 22/06/2014, 20:20

... Wireless Communications and Networking Volume 2011, Article ID 570680, 11 pages doi:10.1155/2011/570680 Research Ar ticle Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC ... orthogonality between subcarriers and causes intercarrier interference (ICI). To ensure good performance of OFDM systems, the CFO must be accurately estimated and com...

Ngày tải lên: 21/06/2014, 05:20

... obtained R(1) values for these EURASIP Journal on Wireless Communications and Networking 9 [5] M. Al Naboulsi, H. Sizun, and F. De Fornel, “Fog attenuation prediction for optical and infrared waves,” ... precipitation for propagation modelling,” ITU, Geneva, Switzerland, 2009. [18] F. Nadeem, E. Leitgeb, V. Kvicera, M. Grabner, M. S. Awan, and G. Kandus, “Simulation and analys...

Ngày tải lên: 21/06/2014, 05:20

... of frequency and amplitude values. For accurate sinusoidal parameters estimation of periodical components with high -frequency modulations a frequency- modulated filter can be used. The closed form ... 0, (13) where F k c = (F k−1 +F k )/2andF k Δ = (F k −F k−1 )/2. Parameters F k c and F k Δ correspond to the center frequency of the passband and the half of bandwidth, respect...

Ngày tải lên: 21/06/2014, 08:20

... Priori Estimates for m, r,ands The a priori estimates for m, r and s are very similar to the estimates for f. We omit the details here and present the results. The truncation for m satisfies the ... Problems Volume 2010, Article ID 405816, 29 pages doi:10.1155/2010/405816 Research Article On the Well Posedness and Refined Estimates for the Global Attractor of the TYC Model...

Ngày tải lên: 21/06/2014, 11:20

... E  and E − are orthogonal with respect to the bilinear form B,thatis, B  z  ,z −   0, for z  ∈ E  ,z − ∈ E − . 2.8 We can also define the quadratic form Q : E → R associated to B and ... Palais-Smale sequence for I ± PS-sequence for short if |I ± z n |≤C uniformly in n and ∇I ± z n  n → 0inE ∗ . We say that I ± satisfies the Palais-Smale condition PS-condition f...

Ngày tải lên: 21/06/2014, 20:20

... Point Theory and Applications Volume 2008, Article ID 543154, 8 pages doi:10.1155/2008/543154 Research Article Coincidence Point, Best Approximation, and Best Proximity Theorems for Condensing Set-Valued ... conditions for given set-valued mappings F and G and a set X such that there is a point x 0 ∈ X satisfying dGx 0 ,Fx 0  ≤ dx, Fx 0  for x ∈ X. When G  I, th...

Ngày tải lên: 21/06/2014, 23:20

... Communications and Networking Volume 2007, Article ID 56471, 12 pages doi:10.1155/2007/56471 Research Article Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems Panagiotis ... subarray is formed using a predefined and fixed number of antenna elements (let it be k j antenna ele- ments for the jth subarray). Therefore, a capacity bound for antenna...

Ngày tải lên: 22/06/2014, 06:20

... National ICT Australia and Research School of Information Science and Engineering, The Australian National University, Canberra ACT 2612, Australia 2 School of Information Technology and Electrical Engineering, ... pages doi:10.1155/2007/71495 Research Article Detection-Guided Fast Affine Projection Channel Estimator for Speech Applications Yan Wu Jennifer, 1 John Homer, 2 Geert...

Ngày tải lên: 22/06/2014, 19:20

... graph illustrates the filter bandwidth requirement for a specified number of read/write (R/W) operations performed for each input data. Two memory bandwidth limits are provided, 36- and 72-bit access, to ... [19]performs array grouping (vertically and horizontally) and dimensional transformation (array widening and array narrowing). Array widening is useful for read-only arrays a...

Ngày tải lên: 22/06/2014, 22:20