trend and technical issues for mimo ofdm system

... ĐỨNG ĐỘNG Rules for classification and technical supervision of dynamic riser system Lời nói đầu TCVN 8403:2010 được biên soạn trên cơ sở các tài liệu chính sau: ● Offshore Standard DNV-OS-F201: ... PHẠM PHÂN CẤP VÀ GIÁM SÁT KỸ THUẬT HỆ THỐNG ỐNG ĐỨNG ĐỘNG Rules for classification and technical supervision of dynamic riser system 1 Phạm vi áp dụng 1.1 Tiêu chuẩn này quy định các yêu cầu ... biển - Phần 13: Kiểm tra không phá hủy; ISO 13628-5 Petroleum and natural gas industries-Design and operation of subsea production systems - Part 5: Subsea umbilicals (Công nghiệp dầu mỏ và khí

Ngày tải lên: 29/11/2021, 21:05

... economic and market forces at the time Therefore, prospects for the “Future Installation” contemplated in 2.2.2 may be brought forward to the “Initial Installation” phase described in 2.2.1 and subsequently ... operating parameters for the expanded mill Trang 12Table 2: Maximum Key Plant Operating Parameters for Expanded Mill (Maximum input/output) Wood Demand (incl pulp logs, saw mill residue and purchased ... Recasuticising Plant and Evaporation Plant to allow for the increased production The woodyard will be expanded to allow for the increased tonnage of pulpwood, saw mill chips and boiler fuel The

Ngày tải lên: 24/03/2014, 05:20

... aid of pilots for MIMO-OFDM Zijian Tang1,2*and Geert Leus2 Abstract In this paper, we consider pilot-aided channel estimation for orthogonal frequency division multiplexing (OFDM) systems with ... estimation per-formance can still be improved Another challenge in a MIMO-OFDM system is how to distribute pilots in the time, frequency and spatial domains Barhumi et al [9] and Minn and Al-Dhahir ... on the diagonal.⊗ and † represent the Kronecker product and the pseudo-inverse, respec-tively INstands for the N × N identity matrix; 1M×Nfor the M × N all-one matrix, and WKfor a K-point normal-ized

Ngày tải lên: 20/06/2014, 22:20

... (MIMO) transceiver designs, that is, the geometric mean decomposition (GMD) and the uniform channel decomposition (UCD) schemes, we propose simple and efficient closed-loop MIMO-OFDM designs for ... simple and efficient closed-loop designs for MIMO-OFDM-based WLANs We focus on the IEEE 802.11a standard, although our schemes are also ap-plicable to other standards including the US standard ... denote matrices and bold lower case letters for column vectors We use (·)T to denote the transpose and (·)∗ to denote the Hermitian transpose  · stands for the Euclidean norm and ·  Ffor the Frobe-nius

Ngày tải lên: 22/06/2014, 23:20

... Require information Require information Require information Require information Require information Require information Require information Require information Require information Require information ... subject” function The system checks the information in the subject database Then the database will reply information for system The system process information and sent feedback for manager about: ... otherinformation system that provides data to the system or receives data orinformation from the system External entities showed the boundaries of theinformation system or the information system’s

Ngày tải lên: 04/12/2014, 08:49

... Scientific and practical significances: contributing to the construction of the scientific basis for the formulation of management tools of the OPCM and orientating sub-area for land use resources ... Trang 1MINISTRY OF EDUCATION AND TRAINING HANOI UNIVERSITY OF MINING AND GEOLOGY DANG THI HAI YEN “RESEARCH ON OVERALL MANAGEMENT AND TECHNICAL SOLUTIONS FOR SURFACE COAL MINE RECLAMATION ... financial accounts and use them in a reasonable manner; especially focus on researching the conditions and preparing for rehabilitation right before the start of exploitation and being continued

Ngày tải lên: 26/08/2015, 21:36

... instructions for authors and subscription information: http://www.tandfonline.com/loi/uaft20 Understanding Online Gaming Addiction and Treatment Issues for Adolescents Kimberly Young a a The Center for ... 10.1080/01926180902942191 Understanding Online Gaming Addiction and Treatment Issues for Adolescents KIMBERLY YOUNG The Center for Internet Addiction Recovery, Bradford, Pennsylvania, USA Massive ... verified with primary sources of information Taylor and Francis shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever

Ngày tải lên: 25/08/2016, 23:26

... share gains andlosses Employees know how the organization is performing through in-formation they receive and use about performance Manco, for example,sets annual targets for net earnings and return ... into trends in technology, demographics, regulation, and life-styles that can be harnessed to rewrite market rules and create new forms of competition (Hamel and Prahalad 1994) The quest for foresight ... individuals and society as a whole Chapter 7 is a case study of the actual process of tuition setting at zona and Kansas public university systems The authors present an over-view of the issues and forces

Ngày tải lên: 12/04/2017, 10:16

... Require information Require information Require information Require information Require information Require information Require information Require information Require information Require information ... subject” function The system checks the information in the subject database Then the database will reply information for system The system process information and sent feedback for manager about: ... otherinformation system that provides data to the system or receives data orinformation from the system External entities showed the boundaries of theinformation system or the information system’s

Ngày tải lên: 15/09/2018, 10:18

... of system interactivity and technical support on learning management system utilization Knowledge Management & E-Learning, 9(1), 50–68. Trang 2The influence of system interactivity and technical ... Heričko, & Pušnik, 2011) Systems that conduct e-learning are different and have various names such as online systems, virtual systems, learning management systems and so on (Connolly, Gould, ... utilization among Malaysian Higher Education students 2 To develop and test a model for LMS acceptance, incorporating system interactivity, and technical support 2 Literature review In Malaysia, most

Ngày tải lên: 10/01/2020, 06:43

... addressed Besides, BER prediction of coded MIMO-MIMO-OFDM systems and performance of Golden coded MIMO-OFDM system which were respectively discussed in [4] and [5] are some interesting researches ... performance for 2×2 MIMO-OFDM using QPSK modulation over Nakagami-m fading Trang 8Figure 7 SER performance for 2×2 MIMO-OFDM system using QPSK modulation over different channels. Next, SER performance ... from OFDM and MIMO system, such as, enables support of more antennas and larger bandwidths This is useful for indoor wireless systems to reach up to several hundreds of Mb/s in data rate and achieve

Ngày tải lên: 11/02/2020, 16:21

... BERs for SISO OFDM under different p 94 ¯ 5.4 Performance NMSEs for MIMO OFDM versus SNR 5.5 Performance NMSEs for MIMO OFDM versus number of snapshots 96 5.6 BERs for MIMO OFDM ... fact, MIMO has gained its application in various standards Table 1.1 provides an overview of all current MIMO standards and their technologies 1.3 MIMO- OFDM system The signaling schemes in MIMO systems ... Current MIMO standards and the corresponding technologies Standard Technology WLAN 802.11n OFDM WiMAX 802.16-2004 OFDM/ OFDMA WiMAX 802.16e OFDMA 3GPP Release WCDMA 3GPP Release (LTE) OFDMA 802.20 OFDM...

Ngày tải lên: 14/09/2015, 11:54

... a MIMO- OFDM system in wideband frequency selective MIMO channels, and more specifically the appropriate spacetime precoding schemes and transmitter and receiver designs for a MIMO- OFDM system ... receiver for BICM GSTBC -OFDM systems leaver and deinterleaver, respectively and −1 stand for inter- 94 5.2 Comparison of the exact and approximated SDF’s for 16QAM ... pre-transform can be used with OFDM Therefore, how to achieve the required multiplexing gain and diversity gain from the spatial and frequency domains is an important design issue for MIMO- OFDM systems...

Ngày tải lên: 15/09/2015, 17:10

... 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 of OFDM ... Synchronization of OFDM systems 38 2.2.5 Advantages and disadvantages of OFDM systems 39 2.3 MIMO systems 40 2.3.1 Basic MIMO system model 40 2.3.2 Functions of MIMO systems ... Chapter 5: MIMO- OFDM system capacity with imperfect feedback channel 118 5.1 The open-loop and closed-loop capacity for MIMO Systems 119 5.1.1 MIMO system model 119 5.1.2 MIMO system...

Ngày tải lên: 20/11/2012, 11:28

... de Jong, and T Willink, “TurboMIMO for wireless communications,” IEEE Communications Magazine, vol 42, no 10, pp 48–53, 2004 [4] J Liu and J Li, “Turbo processing for an OFDM- based MIMO system, ” ... that are used as extrinsic information for MIMO demapping and CIR, CFO, and SFO estimation as follows The purpose of MIMO- demapper is to compute the extrinsic soft bit information: (8) where P N ... convolutionalcoded MIMO- OFDM system In the investigation, the OFDM- related parameters are set to be similar to that given by IEEE standard 802.11a [15] QPSK is employed for data OFDM symbols, each...

Ngày tải lên: 21/06/2014, 23:20

... processor for MIMO OFDM systems,” IEEE Transactions on Circuits and Systems I, vol 54, no 4, pp 807–815, 2007 [7] Y Chen, Y W Lin, Y C Tsao, and C Y Lee, “A 2.4-Gsample/s DVFS FFT processor for MIMO OFDM ... 2006 S Saponara, N E L’Insalata, and L Fanucci, “Low-complexity FFT/IFFT IP hardware macrocells for OFDM and MIMOOFDM CMOS transceivers,” Microprocessors and Microsystems, vol 33, no 3, pp 191–200, ... r23 SDF-kR for efficient FFT processor in MIMO- OFDM systems,” IEICE Electronics Express, vol 6, no 24, pp 1702–1707, 2009 BO Fu and P Ampadu, “An area efficient FFT/IFFT processor for MIMO- OFDM WLAN...

Ngày tải lên: 21/06/2014, 08:20

... MIMO- OFDM subsystem For a multiuser scenario, each user can be allocated one or more MIMO- OFDM subsystems depending on the system complexity and requirement The block diagram of a MIMO- OFDM system ... preserving both diversity and coding gain, a MIMO- OFDM system typically is partitioned into Ns MIMO- OFDM subsystems where Ns ≥ It is pointed out in [28] that the MIMOOFDM system capacity with grouping ... antennas where Γ = The MIMO- OFDM system has two transmit antennas, 512 subcarriers, and a bandwidth 16 MHz Each MIMOOFDM subsystem has four well-separated subcarriers and the subcarrier interval...

Ngày tải lên: 21/06/2014, 20:20

... multipleoutput (MIMO) system MIMO systems employ multiple antennas at both the transmitter and receiver MIMO- OFDM combines OFDM and MIMO techniques thereby achieving spectral efficiency and increased ... broadband systems The use of MIMO technology in combination with OFDM, i.e., MIMO- OFDM [5,6,7], therefore becomes an attractive solution for future broadband wireless systems MIMO- OFDM is a technology ... and multiple antennas at receiver (MIMO) technology in combination with OFDM, i.e., MIMO- OFDM, therefore becomes an attractive solution for future broadband wireless systems Similar to SISO-OFDM...

Ngày tải lên: 04/10/2015, 10:26

... decoder OFDM Mod Binary data Channel Encoder MIMO Encoder OFDM Mod OFDM Mod NT − OFDM Demod Recovered binary data Channel Decoder MIMO Decoder OFDM Demod OFDM Demod N R −1 Fig 9: MIMO- OFDM system ... Convolutional coded MIMO- OFDM system with PACE for data transmitted over a UNI channel with Td = 1.02μ s ……………………… 98 35 Comparisons of × and × Convolutional coded MIMO- OFDM systems with PACE for data transmitted ... 2.2.2 MIMO- OFDM System Model The single-input single-output OFDM case can be easily extended to the MIMO case by performing the IFFT/FFT and insertion/removal of CP operations at each transmit and...

Ngày tải lên: 08/11/2015, 17:16

... to algorithms for standard MIMO- OFDM systems and it is robust against channel length overestimation The number of words: 460 Semi-Blind Signal Detection for MIMO and MIMO- OFDM Systems by Ma Shaodan ... Detection for MIMO and MIMO- OFDM Systems” Submitted by Ma Shaodan for the degree of Doctor of Philosophy at The University of Hong Kong in May 2006 MIMO (Multiple Input Multiple Output) and MIMO- OFDM ... algorithms for MIMO, MIMO- OFDM with short cyclic prefix (CP), and MIMOOFDM without CP, respectively A three-step semi-blind Rake-based multi-user detection technique is proposed for quasi-synchronous MIMO...

Ngày tải lên: 20/11/2012, 11:36