Báo cáo hóa học: " Research Article Time and Frequency Synchronisation in 4G OFDM Systems" pdf

... 2002. Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009, Article ID 641292, 9 pages doi:10.1155/2009/641292 Research Article Time and Frequency Synchronisation ... averaging Without averaging Figure 7: Frequency synchronisation MSE with and without averaging of the frequency offset estimate. 7.2. Tracking. During the tr...

Ngày tải lên: 21/06/2014, 22:20

... resistance-strain sensitivity when strain hardening initiates. The change in piezoresistivity correlates the cracking in the ECC matrix and results in a nonlinear change in the material conductivity. ... measurement. The initial resistivity changes with hydration degree and increases with DC polarization. An interesting feature of the material lies in the detectable change in...

Ngày tải lên: 21/06/2014, 08:20

... (ICI) and interantenna interference (IAI) due to the residual frequency offsets are analyzed, and the average signal-to-interference -and- noise ratio (SINR) is derived. The BER of equal gain combining ... Communications and Networking D n t ;m for the following reception methods: (1)demodulation without combining, (2)EGC ,and( 3)MRC. Note that the SINR for each combining scenario (i.e...

Ngày tải lên: 21/06/2014, 11:20

... an OFDM receiver by introducing intercarrier interference (ICI) and intersymbol interference (ISI). To assist the design of OFDM receivers, we formulate the theoretical signal-to-interference -and- noise ... offset (CFO), and sampling clock frequency offset (SCFO) in OFDM systems. When the symbol time (ST) is not located in the intersymbol interference (ISI) free region, ISI i...

Ngày tải lên: 21/06/2014, 22:20

... the new radio resource and interference situation into account. Finally, the expected departure times of the HSDPA users are updated according to the remaining data volumes and data rates. 7.1. ... (s) MaxTBS Proportional-Fair Round-Robin Figure 13: Total remaining data volume versus time for a three- user scenario with fixed data volume. Vertical dashed lines indicate departures. discip...

Ngày tải lên: 21/06/2014, 22:20

... r 2 +2Rr sin(α )and 2  R 2 + r 2 +2Rr sin(α), respectively. For given r and R,andforα ranging between 0 and π/2, both R 2 + r 2 +2Rr sin(α )and2  R 2 + r 2 +2Rr sin(α)are monotonically increasing functions ... minimum transmitted power P t min ,definedin(14) required to obtain the coverage reported in Figure 10,is shown in Figure 11. The minimum transmitted power is an increasing f...

Ngày tải lên: 21/06/2014, 22:20

... delayed signal samples and leads to the study presented in this paper. In this line of thought we can think in concentrating the delayed samples into a finite number of points that somehow “average” ... development in the areas of physics and engineering and considerable research about a multitude of applications emerged such as, viscoelasticity, signal processing, diffusion, mo...

Ngày tải lên: 21/06/2014, 05:20

... In Section 2, we introduce some definitions and lemmas. In Section 3, by using the method of coincidence degree theory, we obtain the existence of the anti-periodic solutions of system 1.1.InSection ... < 0. 5.4 Hindawi Publishing Corporation Journal of Inequalities and Applications Volume 2010, Article ID 132790, 19 pages doi:10.1155/2010/132790 Research Article Existence...

Ngày tải lên: 21/06/2014, 07:20

... ω 2 ) = 1  √ 2πσ  M/2 e −(1/2σ 2 )x 2 −a 2 s 2  2 . (A.2) Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010, Article ID 172703, 13 pages doi:10.1155/2010/172703 Research Article Robust Blind Frequency and ... 1000 Proposed-sync Proposed-tracking ML-sync ML-tracking 10 −2 10 −1 10 0 10 1 10 2 10 3 10 4 CPU Running time (s) M point (b)...

Ngày tải lên: 21/06/2014, 08:20

... frequency band, (LH) the low-high frequency band, and (HL) the high-low frequency band. For image quality purpose, the frequency bands (LL) and (HH) are not suitable to use in the watermarking process ... “Digital watermarking in joint time- frequency domain,” in Proceedings of the International Confer- ence on Image Processing (ICIP ’02), pp. 481–484, September 2002. [18...

Ngày tải lên: 21/06/2014, 08:20