Antenna selection for energy efficient MIMO OFDM wireless systems
Báo cáo hóa học: "Research Article Antenna Selection for MIMO Systems with Closely Spaced Antennas" ppt
... Hybrid selection FFT based selection Phase-shift based selection Reduced full system w/o selection Hybrid selection FFT based selection Phase-shift based selection Reduced full system w/o selection ... paper, we proposed a study of some typical hard and soft AS methods for MIMO systems with closely spaced antennas We assumed antenna elements are placed linearly in a side-by-side fashion, and ... importance of modeling the mutual coupling for antenna selection for closely- spaced arrays,” in Proceedings of IEEE Conference on Information Sciences and Systems (CISS ’06), pp 1351–1355, Princeton,...
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RECOMMENDED VENTILATION STRATEGIES FOR ENERGY-EFFICIENT PRODUCTION HOMES pdf
... residential ventilation systems for the U.S Environmental Protection Agency’s (EPA’s) ENERGY STAR® Homes program and recommends mechanical ventilation strategies for new, low-infiltration, energy-efficient, ... Heat-recovery Ventilation 16 Figure Ventilation Costs in Boston Homes with Gas Furnace/AC 21 Figure Ventilation Costs in Wash DC Homes with Gas Furnace/AC 22 Figure Ventilation Costs in Wash DC Homes ... recommendations for ventilation of production homes in four climates, but we also provide information that enables contractors to choose the most suitable ventilation system for each set of circumstances...
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Báo cáo sinh học: " Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems" ppt
... an open-loop MIMO OFDM-CDMA scheme using space-timefrequency spreading (STFS), in the presence of frequency-selective Rayleigh-fading channel The BER and BLER performance of the OFDM-CDMA system ... scheduling In addition, it offers better diversity/multiplexing trade-off The performance of MIMO OFDM–CDMA scheme using STFdomain spreading is investigated with zero-forcing (ZF) receiver It is ... section, joint space-time-frequency spreading is proposed for the downlink of an openloop multi-user system employing single-user MIMO (SU -MIMO) system based on OFDMCDMA system A MIMO OFDM channel...
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Báo cáo toán học: " Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems" pptx
... N c , the OFDM-CDMA 60 Proposed OFDM-CDMA 2D OFDM-CDMA Number of Users 50 40 30 20 10 0 10 12 14 16 SNR dB Figure 10 System throughput comparison for OFDM-CDMA system with 4Tx, 4Rx of the proposed ... scheduling In addition, it offers better diversity/multiplexing trade-off The performance of MIMO OFDM-CDMA scheme using STF-domain spreading is investigated with zero-forcing (ZF) receiver It ... doi:10.1186/1687-6180-2011-139 Cite this article as: Dahman and Shayan: Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems EURASIP Journal on Advances in Signal Processing...
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Báo cáo hóa học: " Low complexity antenna selection for V-BLAST systems with OSIC detection" docx
... near-optimal performance for the MIMO systems with a small number of antennas In the systems with a large number of antennas, we can achieve even higher complexity reduction without significant performance ... 1983) doi:10.1186/1687-1499-2011-6 Cite this article as: Bae and Lee: Low complexity antenna selection for V-BLAST systems with OSIC detection EURASIP Journal on Wireless Communications and Networking ... 20 Figure MMSE -OSIC: VSER curves for antenna selection from (3 × 4) to (3 × 3) where (M × N) means channel matrix size (Uncoded, QPSK) Figure MMSE -OSIC: VSER curves for antenna selection from...
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Báo cáo hóa học: "Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows" pdf
... Mo, and Nb and different doping concentrations We report on the influence of each element and respective concentrations on the crystal structure of the films, optical /thermochromic performance and ... derivative of both curves of the hysteresis loops (heating and cooling) and considering the mean value Results and discussion Structural characterization The crystal structure of the three sets of films ... V1-xMoxO2 thermochromic films deposited by reactive magnetron sputtering Thin Solid Films 1996, 281-282:239 Batista C, Teixeira V, Ribeiro RM: Synthesis and Characterization of V1xMoxO2 Thermochromic...
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Báo cáo hóa học: " Research Article Optimal Channel Selection for Spectrum-Agile Low-Power Wireless Packet Switched Networks in Unlicensed Band" doc
... is, two interfering packets were transmitted during that time as shown in Figure Since in practical scenarios the interference probability 1, the probability of having two interfering packets ... Gittins indices makes the algorithm try unexplored channel until enough information is gained about them 3.2.2 Channel selection algorithm The channel selection can be described using the Gittins ... 3.2 Optimal policy In order to determine the optimal policy, we need to establish a mapping between informational states and possible actions determining which channel should be selected for...
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Báo cáo hóa học: "Research Article A Practical, Hardware Friendly MMSE Detector for MIMO-OFDM-Based Systems" pptx
... on an FPGA has a single-clock latency Based on the complexity assessment in this section and the fact that we target an FPGA implementation where a number of dedicated multipliers are available, ... enhances numerical stability; and (d) an aggressive time-shared VLSI architecture The above techniques are quite general and are readily applicable to any MMSE- based MIMO detector implementation CONCLUSION ... [3] A J Paulraj and C B Papadias, “Space-time processing for wireless communications,” IEEE Signal Processing Magazine, vol 14, no 6, pp 49–83, 1997 [4] A J Paulraj, D A Gore, R U Nabar, and...
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Overview of recent technology for energy efficient in lighting in textiles
... Philips Lighting However, dimming CFL and MH could be difficult © 2009 Rensselaer Polytechnic Institute All rights reserved 28 GE Lighting GE Lighting 28 Lamps for industrial applications Linear ... a major thoroughfare of Jing Jiang City in the Jiangsu province of China The 180W prototype LED streetlights were installed by Jiangsu Hua Jing Photoelectronics for replacing traditional 250W ... Corporation will introduce into the Japanese market six new LED Downlight Lightings, including three that deliver a light intensity equivalent to a 150-watt incandescent lamp, an industry first for downlight...
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Software techniques for energy efficient memories
... Introduction Energy Efficient Memories Device Innovations Non-Volatile Memories SSD/Flash Resistive Memories STT-RAM, MRAM, PCM Racetrack Memories Design Innovations Reconfigurable Memories DVS/DVFS Memories ... efficient memories 1.1 Energy Efficient Memories There are broadly two kinds of energy efficient memories First, memories that are built with low power consuming devices or materials Non-volatile memories ... not specifically optimized for energy efficiency In this thesis, we propose compiler optimization and software testing methods to optimize programs for energy efficiency Our techniques provide cross-layer...
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Blind channel estimation for MIMO OFDM communication systems
... this thesis is the development of three blind channel estimation and one blind source separation algorithms for MIMO- OFDM systems The first proposed channel estimation algorithm is a subspace based ... BLIND CHANNEL ESTIMATION FOR MIMO OFDM COMMUNICATION SYSTEMS CHEN XI (M.Sc., National University of Singapore, Singapore) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR ... transferred to a number of parallel flat-fading MIMO channels [6] • In Chapter 3, we present a novel subspace based blind channel estimation algorithm for MIMO- OFDM systems driven by either white or colored...
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System level design techniques for energy efficient embedded systems
... SYSTEM- LEVEL DESIGN TECHNIQUES FOR ENERGY- EFFICIENT EMBEDDED SYSTEMS This page intentionally left blank System- Level Design Techniques for Energy- Efficient Embedded Systems by MARCUS ... techniques that allow an effective automated design of energy- efficient embedded systems Special emphasis is placed upon systemlevel co-synthesis techniques for systems that contain dynamic voltage scalable ... different applixv xvi SYSTEM- LEVEL DESIGN TECHNIQUES cations within a single device, i.e., multi-mode embedded systems A new co-synthesis technique for multi-mode embedded systems based on a novel...
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MIMO OFDM COMMUNICATION SYSTEMS
... plays a significant role for MIMOOFDM systems For this reason, it is the first part of my dissertation to work on channel estimation of MIMO- OFDM systems The maturing of MIMO- OFDM technology will lead ... referred to as OFDM Since we aim at performance enhancement for wireless communication systems, we use the term OFDM throughout this thesis Furthermore, we only use the term MIMO- OFDM while explicitly ... formulates the channel estimation problem for MIMO- OFDM systems and proposes a pilot-tone based estimation algorithm A complex equivalent baseband MIMO- OFDM signal model is presented by matrix representation...
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Báo cáo hóa học: " Layered Video Transmission on Adaptive OFDM Wireless Systems" pot
... function gain related to the nth subchannel, and wn is a weight coefficient which allows nonuniform power level allocation on the transmitter side as Layered Video Transmission on Adaptive OFDM Wireless ... communications, joint source and channel coding, and wireless communication systems Layered Video Transmission on Adaptive OFDM Wireless Systems M Chiani was born in Rimini, Italy, on April 4, ... simulations performed, N f the number of frames considered in the average, and s and f are the simulation index and the frame index In the case considered, Ns = 22 Layered Video Transmission on Adaptive...
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Từ khóa: two rate based structures for computationally efficient wide band fir systemsenergy efficient communication for ad hoc wireless sensor networks pdf• smart energy efficient devices for personal assistance based on zero power sensing computation and communication technologitopic selection for gifted studentsselection for an parservietnam national strategy for energy developmentmaterials for energy conservationthermal insulation materials and systems for energy conservationứng dụng kỹ thuật mimo ofdmnghiên cứu hệ thống mimo ofdmoptimal utterance selection for unit selection speech synthesis databasesmo phong he thong mimo ofdman energy efficient ip over wdm networkthe meaning of normative processes for energy conservationmaterials used for energy conservationNghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngBáo cáo quy trình mua hàng CT CP Công Nghệ NPVNghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấpNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzđề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giảiGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitQuản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninhPhát hiện xâm nhập dựa trên thuật toán k meansNghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chếNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíSở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIXKiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtĐổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namHIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀMMÔN TRUYỀN THÔNG MARKETING TÍCH HỢP