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This article describes a new efficient implementation of the Cooley-Tukey fast Fourier transform (FFT) algorithm using C++ template metaprogramming. Thank to the recursive nature of the FFT, the source code is more readable and faster than the classical implementation. The efficiency is proved by performance benchmarks on different platforms.
標(biāo)簽：
implementation
Cooley-Tukey
describes
efficient
上傳時(shí)間：
2013-12-23
上傳用戶：netwolf
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Implementation of GPU (Graphics Processing Unit) that rendered triangle based models. Our goal was to generate complex models with a movable camera. We wanted to be able to render complex images that consisted of hundreds to thousands of triangles. We wanted to apply interpolated shading on the objects, so that they appeared more
smooth and realisitc, and to have a camera that orbitted around the object, which allowed us to
look arond the object with a stationary light source. We chose to do this in hardware, because our initial implementation using running software on the NIOS II processor was too slow. Implementing parallelism in hardware is also easier to do than in software, which allows for more efficiency. We used Professor Land s floating point hardware, which allowed us to do calculations efficiency, which is essential to graphics.
標(biāo)簽：
Implementation
Processing
Graphics
rendered
上傳時(shí)間：
2014-11-22
上傳用戶：shawvi
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12V or Adjustable, High-efficiency,Low IQ, Step-Up DC-DC Controller
標(biāo)簽：
1771
MAX
上傳時(shí)間：
2016-10-20
上傳用戶：oyjwle
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We consider the problem of target localization by a
network of passive sensors. When an unknown target emits an
acoustic or a radio signal, its position can be localized with multiple
sensors using the time difference of arrival (TDOA) information.
In this paper, we consider the maximum likelihood formulation
of this target localization problem and provide efficient convex
relaxations for this nonconvex optimization problem.We also propose
a formulation for robust target localization in the presence of
sensor location errors. Two Cramer-Rao bounds are derived corresponding
to situations with and without sensor node location errors.
Simulation results confirm the efficiency and superior performance
of the convex relaxation approach as compared to the
existing least squares based approach when large sensor node location
errors are present.
標(biāo)簽：
傳感器網(wǎng)絡(luò)
上傳時(shí)間：
2016-11-27
上傳用戶：xxmluo
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The AP2406 is a 1.5Mhz constant frequency, slope compensated current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. The AP2406 can supply 600mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The AP2406 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Idle mode operation at light loads provides very low output ripple voltage for noise sensitive applications.
The AP2406 is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version and fixed output voltage of 1.2V, 1.5V and 1.8V
標(biāo)簽：
2406
AP
技術(shù)手冊(cè)
上傳時(shí)間：
2017-02-23
上傳用戶：w124141
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en.CD00004003_Designing with L4973, 3.5 A high efficiency DC-DC converter,en.CD00004003_Designing with L4973, 3.5 A high efficiency DC-DC converter
標(biāo)簽：
DCDC
高頻開關(guān)
電源設(shè)計(jì)
上傳時(shí)間：
2017-12-24
上傳用戶：jatcreo@qq.com
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DESIGNING WITH L4978, 2A HIGH efficiency DC-DC CONVERTERY
標(biāo)簽：
L4978
DCDC
變換器
上傳時(shí)間：
2017-12-24
上傳用戶：jatcreo@qq.com
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DESCRIPTION
The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring
different sets of peripherals targeted for various applications. The architecture, combined with five low-power
modes, is optimized to achieve extended battery life in portable measurement applications. The device features a
powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency.
The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 1 μs.
The MSP430G2x13 and MSP430G2x53 series are ultra-low-power mixed signal microcontrollers with built-in 16-
bit timers, up to 24 I/O capacitive-touch enabled pins, a versatile analog comparator, and built-in communication
capability using the universal serial communication interface. In addition the MSP430G2x53 family members
have a 10-bit analog-to-digital (A/D) converter. For configuration details see Table 1.
Typical applications include low-cost sensor systems that capture analog signals, convert them to digital values,
and then process the data for display or for transmission to a host system.
標(biāo)簽：
G2553
2553
430G
MSP
430
上傳時(shí)間：
2018-12-25
上傳用戶：ygyh
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The understanding of electrical system design has become increas-
ingly important, not only to the electrical designer, but to safety, plant
and project engineers as well. With the advent of high energy costs, plant
and project engineers have needed to become more aware of electrical
systems. Both safety and energy efficiency will be covered in this text
along with practical application problems for industrial and commercial
electrical design.
標(biāo)簽：
Electrical
Efficient
Handbook
Systems
Design
上傳時(shí)間：
2020-05-25
上傳用戶：shancjb
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From the transition of analog to digital communication along with seamless mobility and
high computing power of small handheld devices, the wireless communications industry has
seen tremendous changes leading to the integration of several telecommunication networks,
devices and services over last 30 years. The rate of this progress and growth has increased
particularly in the past decade because people no longer use their devices and networks for
voice only, but demand bundle contents such as data download/streaming, HDTV, HD video ,
3D video conferencing with higher efficiency, seamless connectivity, intelligence, reliability
and better user experience. Although the challenges facing service providers and
telecommunication companies differ by product, region, market size, and their areas of
concentration but time to market, efficient utilization of their assets and revenue expansion,
have impacted significantly how to manage and conduct their business while maintaining
sufficient margin.
標(biāo)簽：
Convergence
Networks
Beyond
4G
of
上傳時(shí)間：
2020-05-26
上傳用戶：shancjb
