Measuring Frequency Content in Signals I this section we will study some non parametric methods for Spectrum estimation of a stochastic process. These methods are described in the literature. All methods are based on the Periodogram which is defined for a sequence x[n] with length N according to
标签： parametric Measuring Frequency Content
上传时间： 2017-03-20
上传用户：秦莞尔w
This project uses the capabilities of LabVIEW and the data acquisition card to measure the power Spectrum of an audio signal.
标签： the capabilities acquisition LabVIEW
上传时间： 2017-03-21
上传用户：hn891122
This paper shows the development of a 1024-point radix-4 FFT VHDL core for applications in hardware signal processing, targeting low-cost FPGA technologies. The developed core is targeted into a Xilinx庐 Spartan鈩?3 XC3S200 FPGA with the inclusion of a VGA display interface and an external 16-bit data acquisition system for performance evaluation purposes. Several tests were performed in order to verify FFT core functionality, besides the time performance analysis highlights the core advantages over commercially available DSPs and Pentium-based PCs. The core is compared with similar third party IP cores targeting resourceful FPGA technologies. The novelty of this work is to provide a lowcost, resource efficient core for Spectrum analysis applications.
标签： applications development hardware paper
上传时间： 2013-12-21
上传用户：jichenxi0730
The second edition of WiMax Operator鈥檚 Manual includes most of the material from the first edition, plus new discussions of 鈥?The ultra-high-speed mobile telephone standard, HSDPA 鈥?Ultrawideband (UWB) 鈥?Changes to DSL technologies 鈥?Mobile voice 鈥?Mobile entertainment 鈥?New backup systems The new edition also reflects the changes that have occurred in the industry over the last year and half, including the emergence of restandards wireless broadband equipment with fully developed mobile capabilities, ignificant alterations in the competitive landscape, and he opening of valuable new Spectrum for roadband wireless operators.
标签： edition the Operator includes
上传时间： 2014-01-02
上传用户：xiaodu1124
注意：刚上传的不完整，以这个为准 （在DS-spread Spectrum系统中,噪声为加性高斯白噪声,传统单用户检测,线性解相关多用户检测和最小均方误差多用户检测的性能比较）
标签：
上传时间： 2017-05-24
上传用户：阳光少年2016
This application report discusses the design of non-invasive optical plethysmography also called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). The pulsoximeter consists of a peripheral probe combined with the MCU displaying the oxygen saturation and pulse rate on a LCD glass. The same sensor is used for both heart-rate detection and pulsoximetering in this application. The probe is placed on a peripheral point of the body such as a finger tip, ear lobe or the nose. The probe includes two light emitting diodes (LEDs), one in the visible red Spectrum (660nm) and the other in the infrared Spectrum (940nm). The percentage of oxygen in the body is worked by measuring the intensity from each frequency of light after it transmits through the body and then calculating the ratio between these two intensities.
标签： plethysmography non-invasive application discusses
上传时间： 2014-01-17
上传用户：天诚24
P3.18. An analog signal xa(t) = sin (100πt) is sampled using the following sampling intervals. In each case plot the Spectrum of the resulting discrete-time signal. Ts= 0.1 ms, Ts= 1 ms, Ts = 0.01 Sec
标签： following intervals sampling sampled
上传时间： 2017-07-12
上传用户：shizhanincc
Wi-Fi pollution, or an excessive number of access points in the area, especially on the same or neighboring channel, can prevent access and interfere with the use of other access points by others, caused by overlapping channels in the 802.11g/b Spectrum
标签： especially pollution excessive the
上传时间： 2017-07-29
上传用户：我们的船长
The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) portion of the electromagnetic field Spectrum. These frequencies are only present for planetary-like bodies with a substantial ionosphere acting as a perfect electric conductor, thus forming a resonance cavity with the surface. In this example, the Schumann resonance frequencies for the Earth are calculated.
标签： frequencies eigenmodes resonance extremely
上传时间： 2014-12-09
上传用户：stella2015
The Open Radar Data Acquisition (ORDA) subsystem replaces the current WSR-88D Radar Data Acquisition subsystem with improved receiver and signal processing hardware and with improved user interface, signal processing and diagnostics software. This paper will discuss the input data from the digital receiver, the ORDA signal processing, and the data output from the ORDA hardware. Specifications of the ORDA digital receiver will be presented. The paper outlines the critical radar signal processing flow and provides analysis of new Spectrum width computations and clutter filtering schemes used in the ORDA system. Where appropriate, ORDA performance enhancements, data quality improvements and reliability and maintenance improvements will be highlighted.
标签： Radar Data Acquisition Acquisiti
上传时间： 2017-08-25
上传用户：leixinzhuo
