RF Technologies For Low Power Wireless Communications

Báo cáo hóa học: " Research Article Optimal Channel Selection for Spectrum-Agile Low-Power Wireless Packet Switched Networks in Unlicensed Band" doc

Báo cáo hóa học:
... 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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Comparisons between Low Power Wireless Technologies

Comparisons between Low Power Wireless Technologies
... differences between various competing wireless technologies in the ultra low power market place Many innovative new use cases are now being made possible with the introduction of ultra low power wireless ... These applications are all constrained by the following critical key requirements: ultra low power, low cost and physical size The ultra low power requirement is mainly due to targeted devices ... other low power wireless technologies discussed in this document It only works up to a range of approximately 5cm and consumes relatively more power Passive NFC tags can be completely unpowered,...
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Báo cáo hóa học: " Research Article Efficient Algorithm and Architecture of Critical-Band Transform for Low-Power Speech Applications" pdf

Báo cáo hóa học:
... Section 1, a novel critical-band transform algorithm is proposed to approximate the critical-band filtering of the human ear It consists of two transforms: a constant- Q transform (CQT) in the ... speech systems In this study, we develop an efficient critical-band transform algorithm and an architecture for approximating the critical-band filtering of the human ear [12] The novel CBT scheme has ... proposed 21-band Bark scale critical-band transform is evaluated and compared with the OWPT method Figure shows the degree of approximation to the Bark scale critical bands both for the CBT and for the...
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Báo cáo hóa học: " Research Article Wideband Impulse Modulation and Receiver Algorithms for Multiuser Power Line Communications" doc

Báo cáo hóa học:
... Their performance is compared with the baseline correlation receiver as reported in Section 3.1 Baseline receiver The baseline receiver for the impulse- modulated system is the correlation receiver ... Rinaldo, and M Bellin, “Synchronization and channel estimation for wide band impulse modulation over power line channels,” in Proceedings of the 8th International Symposium on Power- Line Communications ... Tonello and F Pecile, “Synchronization for multiuser wide band impulse modulation systems in power line channels with unstationary noise,” in Proceedings of International Symposium on Power- Line...
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Báo cáo hóa học: " Analog-Digital Partitioning for Low-Power UWB Impulse Radios under CMOS Scaling" potx

Báo cáo hóa học:
... consumption figures for a 180 nm UWB receiver with the same functionality but relying on four-phase sampling of the full UWB pulse frame are 86 mW for four ADCs operating at 300 MHz and 75 mW for digital ... mixed-mode impulse UWB transceiver with ITRS 2004 roadmap parameters It is concluded that the leakage power consumption is going to become important in low-power UWB receivers with CMOS technology ... design techniques to tackle static and dynamic power consumption on top of CMOS scaling for enabling future low-power UWB radios A roadmap analysis of the power consumption of the front-end shows...
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Báo cáo hóa học: " Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient?" potx

Báo cáo hóa học:
... trellis using either Viterbi decoding, MAP decoding, or sequential decoding Another categorization is based on the decoding algorithms: (1) noniterative decoding algorithms, such as syndrome decoding ... n ≥ [35] ERROR CONTROL CODING Error control coding (ECC) introduces redundancy into an information sequence u of length k by the addition of extra parity bits, based on various combinations of ... that the required SNRECC is less than SNRU by the coding gain ECCgain Also note that ηC BC = R and ηU B = R The minimum required transmit power when using ECC, PTX ,ECC , is given by dn , 4π PTX,U...
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Design for Low Power potx

Design for Low Power potx
... Design for Low Power Slide 19 Low Power Design  Reduce dynamic power – α: clock gating, sleep mode – C: – VDD: – f:  Reduce static power CMOS VLSI Design Design for Low Power Slide 20 Low Power Design ... low leakage devices, Pstatic = 749 mW (!) CMOS VLSI Design Design for Low Power Slide 18 Low Power Design  Reduce dynamic power – α: – C: – VDD: – f:  Reduce static power CMOS VLSI Design Design ... Outline     Power and Energy Dynamic Power Static Power Low Power Design CMOS VLSI Design Design for LowSlide Power Power and Energy  Power is drawn from a voltage source...
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Tunneling field effect transistors for low power logic design, simulation and technology demonstration

Tunneling field effect transistors for low power logic design, simulation and technology demonstration
... TUNNELING FIELD- EFFECT TRANSISTORS FOR LOW POWER LOGIC: DESIGN, SIMULATION, AND TECHNOLOGY DEMONSTRATION YANG YUE (B ENG (HONS.)), NUS A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR ... relatively large bandgap, leading to a low band-to-band tunneling (BTBT) rate and low drive current for Si TFETs Therefore, novel structure designs and materials are need advance the TFET technology ... mr , Tunneling reduced mass for Γ - Γ direct band-to-band tunneling kg * mr ,L Tunneling reduced mass for Γ - L indirect band-to-band tunneling kg NA Acceptor concentration cm-3 N c , Effective...
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Functional unit selection in microprocessors for low power

Functional unit selection in microprocessors for low power
... Issue { Inst=Get_Next_Inst(IP); If (!All_Operand_Ready(Inst)) break; For (each source operand inp of Inst) If (Prod[inp]!=0) PI[Prod[inp]]=MIN(PI[Prod[n]],CycleIssue[Prod[inp]]); For (each destination ... present a novel power saving technique Extra slow FUs with lower per-execution energy are introduced into a processor Using code analysis and/or run-time pipeline profiling, certain instructions ... technique provides a fine-grain mechanism for lowering performance at an instruction-by-instruction level, which is not possible in DVS or any other technique It allows instructions of different...
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Solar and thermal energy scavenging system for low power application

Solar and thermal energy scavenging system for low power application
... different types of solar and thermal energy harvesting systems The main focus of this report is to develop energy efficient solar and thermal energy harvesters for low power wireless sensor applications ... converter (ADC) and voltage as well as current sensors Hence, the overall efficiency of the scavenging system for low power application is comparatively lower due to digital control system in power conversion ... different types of energy scavenging system such as energy extraction from solar and thermal energy sources for wireless sensor nodes used for condition monitoring applications are investigated...
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AN1288 design practices for low power external oscillators

AN1288   design practices for low power external oscillators
... matched for maximum accuracy, as discussed in Section “Load Capacitors Matched to the Crystal and Circuit Board” For many low- power designs, lower capacitance crystals, pF and pF, are recommended Low- power ... electrical performance, especially in high humidity or lowtemperature environments CONCLUSION Low- power crystal oscillators offer extended battery life and lower current consumption for applications ... recommended Low- power crystals with low ESR of less than 65 KOhm are recommended, as they allow for higher oscillation allowance which ensures reliable operation over temperature and voltage For oscillation...
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Advanced memory optimization techniques for low power embedded processors

Advanced memory optimization techniques for low power embedded processors
... Advanced Memory Optimization Techniques for Low- Power Embedded Processors Advanced Memory Optimization Techniques for Low- Power Embedded Processors By Manish Verma ... STORE Main Memory Main Memory Scratchpad Scratchpad Data Memory Main Memory Scratchpad Main Memory Scratchpad Main Memory Scratchpad Main Memory Scratchpad Main Memory Scratchpad Main Memory Scratchpad ... on-board memory present on the evaluation board In the following section, we present an introduction to power and energy optimization techniques 2.2 Survey on Power and Energy Optimization Techniques...
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Tài liệu Rf Mems Circuit Design For Wireless Communications pptx

Tài liệu Rf Mems Circuit Design For Wireless Communications pptx
... RF MEMS Circuit Design for Wireless Communications For a listing of recent titles in the Artech House Microelectromechanical Systems (MEMS) Series, turn to the back of this book RF MEMS Circuit ... RF MEMS and traditional RF and microwave circuit design Chapter of RF MEMS Circuit Design for Wireless Communications starts by clearly stating the ubiquitous wireless communications problem, ... pager) 10 RF MEMS Circuit Design for Wireless Communications Antenna Baseband (DSP) RF front-end fRF Product identity/function Air interface Figure 1.5 Conceptualized wireless information appliance...
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Báo cáo sinh học: "MAC and baseband processors for RF-MIMO WLAN EURASIP Journal on Wireless Communications and " doc

Báo cáo sinh học:
... power consumption and costs of the conventional MIMO approaches [1] limit applications for ubiquitous networks A low-power and low-cost RF-MIMO (MIMAX) system for maximum reliability and performance ... possible to perform all relevant control and configuration commands for every station The baseband board was used for the real-time tests of the MIMAX baseband processor in several setups First, ... MAC functions is described in Section The baseband architecture is presented in Section Functional modules of the baseband processor are described in Sections 5, and The implementation details...
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