Fixed domain asymptotics and consistent estimation for gaussian random field models in spatial statistics and computer experiments

... frameworks in spatial statistics, increasing domain asymptotics and ﬁxed domain asymptotics or called in ll asymptotics (Cressie, 1993) In increasing domain asymptotics, the distance between neighboring ... conditions, under increasing domain asymptotics (Mardia and Marshall, 1984) We are interested in processes on a given ﬁxed region of ℝ 𝑑 and focus on ﬁxed domain asymptotics In the next two sections, ... processes in one dimension Constantine and Hall (1994) studied the estimation of smoothness parameter in one dimension under a sort of mixture of increasing domain and ﬁxed domain asymptotics...

A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems

... that is system capacity In Chapter 5, the MIMO -OFDM system capacity with imperfect feedback channel is investigated In Chapter 6, the capacity variances for OFDM systems over Rayleigh and Ricean ... 6) Chapter 2: OFDM systems and MIMO systems Since the thesis studies the channel estimation for OFDM systems and system capacity for MIMO -OFDM systems, this chapter briefly introduces the background ... for OFDM systems 21 2.2.2 Peak-to-Average (PAR) of OFDM systems 30 2.2.3 Channel estimation for OFDM systems 33 2.2.4 Synchronization of OFDM systems 38 2.2.5 Advantages...

Báo cáo khoa học: "Joint Identiﬁcation and Segmentation of Domain-Speciﬁc Dialogue Acts for Conversational Dialogue Systems" doc

... multiple dialogue acts, according to manual dialogue act annotation Within the set of utterances that contain multiple dialogue acts, the average number of dialogue acts per utterance is 2.3 The dialogue ... number of words in utterances with only a single dialogue act is 7.5 (with a maximum of 34, and minimum of 1), and the average length of utterances with multiple dialogue acts is 15.7 (maximum of ... single dialogue act Multiple is for utterances annotated with more than one dialogue act, and Overall indicates the performance over the entire set P stands for precision, R for recall, and F for...

Báo cáo toán học: " Random approximation with weak contraction random operators and a random fixed point theorem for nonexpansive random self-mappings" pptx

... Random approximation with weak contraction random operators and a random ﬁxed point theorem for nonexpansive random selfmappings Suhong Li1∗,2 , Xin Xiao1 , Lihua Li1 and Jinfeng ... introducing a random iteration process with weak contraction random operator, we obtain a convergence theorem of the random iteration process to a random ﬁxed point for nonexpansive random self-mappings ... article, we study a random iteration process with weak contraction random operator and obtain the convergence theorem of the random iteration process to a random ﬁxed point for nonexpansive random...

Báo cáo hóa học: " Fixed point theorems and Δ-convergence theorems for generalized hybrid mappings on CAT(0) spaces" doc

... theorems for generalized hybrid mappings on CAT(0) spaces Fixed Point Theory and Applications 2011 2011:49 Submit your manuscript to a journal and beneﬁt from: Convenient online submission Rigorous ... on CAT(0) spaces Next, we also consider iteration process (1.5), (1.6), or Mann’s type for generalized hybrid mappings on CAT(0) spaces, and our results improve or generalize recent results on ... Geometry and Fixed Point Theory II International Conference on Fixed Point Theory and Applications pp 113–142.Yokohama Publishers, Yokohama (2004) Dhompongsa, S, Kaewkhao, A, Panyanak, B: Lim’s theorems...

Báo cáo hóa học: " Research Article Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC Sequences: Performance and Sequence Optimization" ppt

... Communications and Networking were conducted to evaluate the performance of the CFO estimation using CAZAC sequences We ﬁrst compare the performance using CAZAC sequences with the performance using two ... the performance of the CFO estimation using CAZAC sequences and demonstrate the performance gain achieved by using the optimal training sequences In the simulations, we assume a multiuser MIMO- OFDM ... of CAZAC sequences: (i) Frank and Zadoﬀ Sequences [18], (ii) Chu Sequences [19], (iii) Polyphase Sequence by Sueshiro and Hatori (S&H Sequences) [20] Both Frank and Zadoﬀ sequences and S&H sequences...

Báo cáo hóa học: " Research Article Robust Blind Frequency and Transition Time Estimation for Frequency Hopping Systems" doc

... practice, transition time is a random variable for a sampling data block The transition time K is set randomly between and M with a uniform distribution As indicated in Figure 6, the performance ... the frequency estimation is paramount, then all M samples may be adopted to perform the frequency estimation It would rely on the type of the application, and using whole M or M/2 sample for estimation ... )i, where a1 and a2 are normally distributed with zero mean and a variance of 0.05 The initial transition time K is set randomly between and M As shown in Figure 7, the frequency estimation errors...

Báo cáo hóa học: " Research Article A Content-Motion-Aware Motion Estimation for Quality-Stationary Video Coding Meng-Chun Lin and Lan-Rong Dung" docx

... Tham, S Ranganath, M Ranganath, and A A Kassim, A novel unrestricted center-biased diamond search algorithm for block motion estimation, ” IEEE Transactions on Circuits and Systems for Video Technology, ... (5) Adaptive Motion Estimation with Variable Subsample Ratios To eﬃciently alleviate the high-frequency aliasing problem and maintain the visual quality for video sequences with variable motion ... estimation with a uniﬁed search mechanism The quality-stationary motion estimation can appropriately adjust the computational load to deliver stationary video quality for a given bitrate Herein,...

Báo cáo hóa học: "Research Article Comparison of Channel Estimation Protocols for Coherent AF Relaying Networks in the Presence of Additive Noise and LO Phase Noise Stefan Berger and Armin Wittneben" pptx

... decreasing SNRest than In this work, we investigated diﬀerent channel estimation protocols for two-hop AF relaying networks (single-user and multiuser) in the presence of additive estimation noise and ... Networking their respective gain factors In the following, we derive expressions for the channel estimates as a function of the actual channels and the perturbations (additive estimation noise and phase ... noise than those requiring less channel uses In order to assess the impact of relay phase noise on the quality of the channel estimates, the notion of “block phase noise is introduced: the LO...

Báo cáo hóa học: " Research Article An Iterative Method for Generalized Equilibrium Problems, Fixed Point Problems and Variational Inequality Problems" docx

... Nonlinear and Convex Analysis, vol 9, no 1, pp 37–43, 2008 19 J.-W Peng and J.-C Yao, “A new hybrid-extragradient method for generalized mixed equilibrium problems, ﬁxed point problems and variational ... Zeng, N.-J Huang, and C.-W Zhao, “Viscosity approximation methods for generalized mixed equilibrium problems and ﬁxed points of a sequence of nonexpansive mappings,” Fixed Point Theory and Applications, ... cases, for instance, optimization problems, Nash equilibrium problems, complementarity problems, ﬁxed point problems, and variational inequalities see, e.g., 1–6 and the reference therein A mapping...

Báo cáo hóa học: "Research Article On the Information Rate of Single-Carrier FDMA Using Linear Frequency Domain Equalization and Its Application for 3GPP-LTE Uplink" doc

... OFDMA, −20 dB OFDMA, −10 dB OFDMA, dB OFDMA, 10 dB OFDMA, 20 dB OFDMA, 30 dB SC -FDMA, −20 dB SC -FDMA, −10 dB SC -FDMA, dB SC -FDMA, 10 dB SC -FDMA, 20 dB SC -FDMA, 30 dB Figure 5: Comparison of the ... SNR (dB) OFDMA, Rx OFDMA, Rx (MRC) OFDMA, Rx (MRC) SC -FDMA, Rx SC -FDMA, Rx (MRC) SC -FDMA, Rx (MRC) (b) Figure 6: Comparison of the achievable information rate between OFDMA and SC -FDMA for diﬀerent ... nowadays The paper is organized as follows In Section we introduce the system model and the information rate for OFDMA and SC -FDMA In Section we derive the SCFDMA rate result and provide its geometrical...

Báo cáo hóa học: " Research Article An Extragradient Method for Fixed Point Problems and Variational Inequality Problems" docx

... schemes (1.6) and (1.7), we introduced a new extragradient method for ﬁnding a common element of the set of ﬁxed points of a nonexpansive mapping and the set of solutions of the variational inequality ... theorem by an extragradient method for nonexpansive mappings and monotone mappings,” Journal of Optimization Theory and Applications, vol 128, no 1, pp 191–201, 2006 [9] G M Korpeleviˇ , An extragradient ... Zeng and J.-C Yao, “Strong convergence theorem by an extragradient method for ﬁxed point problems and variational inequality problems, ” Taiwanese Journal of Mathematics, vol 10, no 5, pp 1293–1303,...

Báo cáo hóa học: " Research Article Reverse Smoothing Effects, Fine Asymptotics, and Harnack Inequalities for Fast Diffusion Equations" pptx

... asymptotics and elliptic Harnack inequalities near the extinction time for fast diﬀusion equation,” preprint, 2006 [5] M Bonforte and J L Vazquez, “Global positivity estimates and Harnack inequalities for ... Elliptic Harnack inequalities imply intrinsic Harnack inequalities and H¨ lder continuity o (iv) All positive times, for any ε > and for all t > ε: global Harnack principle, [7, Theorem 4.1] (v) Asymptotics, ... Harnack inequalities (ii) Large times, t > tc : elliptic Harnack inequalities The constant may depend on the initial datum Elliptic Harnack inequalities imply intrinsic Harnack inequalities and...

Báo cáo hóa học: " Research Article Channel Impulse Response Length and Noise Variance Estimation for OFDM Systems with Adaptive Guard Interval" docx

... information of CIR length for both the receiver and the transmitter to adjust the GI length adaptively Moreover, the estimated noise variance can be used for generation of the channel state information ... proposed OFDM system as in a conventional OFDM system To implement the adaptive GI length concept for broadcasting OFDM systems, a feedback channel is required for signaling the CIR length information ... system with adaptive guard interval (illustration in baseband) STRUCTURE OF AN OFDM SYSTEM WITH ADAPTIVE GUARD INTERVAL Figure shows the structure of an OFDM system with adaptive guard interval, where...

Báo cáo hóa học: " Maximum Likelihood Turbo Iterative Channel Estimation for Space-Time Coded Systems and Its Application to Radio Transmission in Subway Tunnels" potx

... bits), LS (M = 26 bits), and known channel Turbo ST receivers We formulate the ML estimation problem that takes into account the deterministic symbols corresponding to the training sequence and ... our channel estimation technique enables us to diminish the training sequence length up to only bits, instead of the 26 bits considered in the GSM standard, thus achieving a 14% increase in the ... results obtained with the proposed estimator using a training sequence of M = bits and those obtained with classical LS using a training sequence of M = 26 bits (the length standardized in GSM) The...

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