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Description: 用PIC控制ADF4016 PLL芯片,产生6G射频信号-ADF4016 PLL control using PIC chips, radio frequency signals generated 6G
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Size: 4096 |
Author: 毛富强 |
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Description: 中国EPC标准草案（基本上是EPC C1G2的中文翻译）
射频识别协议-
第1类第2代UHF RFID 860兆赫-960兆赫通讯协议
EPC™ Radio-Frequency Identity Protocols
Class-1 Generation-2 UHF RFID
Protocol for Communications at 860 MHz – 960 MHz
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Size: 703488 |
Author: ys |
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Description: 快速自适应算法结合高速处理器件在跳频电台频率估计中的应用.pdf-Fast adaptive algorithm combines high-speed processing devices in the frequency-hopping radio frequency estimation application. Pdf
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Size: 160768 |
Author: z |
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Description: 认知无线电频谱检测技术的研究,有循环检测，周期性检测，仿真程序和结果。很全面。-Cognitive radio frequency spectrum detection technology, there are cycle detection, periodic testing, simulation program and results. Very comprehensive.
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Size: 38912 |
Author: 小范308 |
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Description: 完整的OFDM链路程序并作了较为具体的解析从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析.-Orthogonal frequency division multiplexing (OFDM) is becoming the chosen
modulation technique for wireless communications. OFDM can provide large data
rates with sufficient robustness to radio channel impairments. Many research centers
in the world have specialized teams working in the optimization of OFDM for
countless applications. Here, at the Georgia Institute of Technology, one of such
teams is in Dr. M. A. Ingram’s Smart Antenna Research Laboratory (SARL), a part
of the Georgia Center for Advanced Telecommunications Technology (GCATT).
The purpose of this report is to provide Matlab code to simulate the basic processing
involved in the generation and reception of an OFDM signal in a physical
channel and to provide a description of each of the steps involved. For this purpose,
we shall use, as an example, one of the proposed OFDM signals of the Digital
Video Broadcasting (DVB) standard for the European terrestrial digital television
(DTV) service.
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Size: 160768 |
Author: 田静 |
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Description: 1、采用无线数字识别技术，每个开关各自独立密码，不会相互干扰。
2、兼容常规手动操作功能，无线射频遥控，无方向性。
3、依据国际电工惯例设计、安装、接线和普通机械墙壁开关完全相同。
4、适用各种类型的合格灯具、家用电器等，无需另接外围器件。
5、开关与遥控器之间采用智能分键学习对码，可增配遥控器或增装多个开关。
6、内置异常保护功能及用户可换保险管，具有防雷功能。-1, the use of wireless digital identification technology, separate password for each switch and will not interfere with each other. 2, compatible with conventional manual operation function, radio frequency remote control, no direction. 3, in accordance with the practice of the International Electrotechnical design, installation, wiring and general machinery is identical to the wall switch. 4, applies to all types of qualified lamps, household appliances and so on, then no other peripheral devices. 5, between the remote control switch with smart key learning points of the code may be assigned by remote control or by a number of switches installed. 6, built-in protection function abnormalities and the user can control for insurance, with mine-protected.
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Size: 2048 |
Author: 戴明伟 |
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Description: 基于Keil51平台编写的LC72131+CS1000的收音机控制程序，接收频率88Mhz到108MHz，步进100Khz。由于各个收音头不尽相同，初始化和控制并不一定合用，但其中的LC72131的读写却可以作为参考。-Keil51 prepared based on the platform LC72131+ CS1000 radio control procedures, to receive the frequency of 88Mhz to 108MHz, step 100Khz. As a result of various different radio first, initialization and control are not necessarily shared, but which can read and write the LC72131 reference.
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Size: 4096 |
Author: Cai |
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Description: 一篇介绍认知无线电频谱共享算法的IEEE上的论文，对研究认知无线电的研究人员有很大的帮助。-A description of cognitive radio frequency spectrum sharing algorithm on the IEEE paper, the study of cognitive radio researchers a great help.
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Size: 275456 |
Author: 诗圣 |
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Description: 设计了基于射频nRF2401和数字温度传感器DS18B20的无线测温报警系统。整个系统由测温发射机和显示、控制接收机组成：首先利用温度传感器DS18B20采集测温信号 ，第二步把温度信号存储在主控芯片中，通过无线射频nRF2401发送到接收机，第三步由接收机控制LCD动态显示，最后接收机控制指示灯和报警器做出相应的反应。形成无线通信、控制等功能于一体的新型系统。系统设计了简明的人机交流按键和指示灯，能够实现实时设置上下限报警温度，有效传输距离达到20-40米，测试表明其便携性与实用性兼备，工作性能良好。-Considering the low-power, small size, easy to use and so on. I design the base of RF-based nRF2401 and digital temperature sensor DS18B20 wireless temperature alarm system. The whole system composed by the transmitter and receiver. For the first, using temperature sensor DS18B20 to collect temperature signal. Second, the temperature signal is stored in the master chip and I use the adoption of radio frequency nRF2401 to send it to the host computer. Third, the host computer control LCD to dynamic display. Final, the host computer control lights and alarms to make a corresponding response. Constitute a new wireless communications, control functions system. The system was designed a simple human-computer exchanges, such as the keys and indicator lights. It is able to realize real-time alarm setting upper and lower limits of temperature, the effective transmission distance to reach 20-40 meters. Tests show that it has the portability and practicality, good performance
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Size: 77824 |
Author: qinyu |
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Description: Cognitive radio frequency spectrum detection-The spectrum sensing of a wideband frequency range is studied by dividing it into multiple subbands.
It is assumed that in each subband either a primary user (PU) is active or absent in a additive white Gaussian
noise environment with an unknown variance. It is also assumed that at least a minimum given number of
subbands are vacant of PUs. In this multiple interrelated hypothesis testing problem, the noise variance is
estimated and a generalised likelihood ratio detector is proposed to identify possible spectrum holes at a
secondary user (SU). Provided that it is known that a specific PU can occupy a subset of subbands
simultaneously, a grouping algorithm which allows faster spectrum sensing is proposed. The collaboration of
multiple SUs can also be considered in order to enhance the detection performance. The collaborative
algorithms are compared in terms of the required exchange information among SUs in some collaboration
methods. The simulation results show that the propos
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Size: 231424 |
Author: phillis |
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Description: This an article with an algoritmn about two types of radio-frequency front-end imperfections, that is, carrier frequency offset and the inphase/quadrature (I/Q) imbalance
are considered for orthogonal frequency divisionmultiplexing (OFDM) communication systems-This is an article with an algoritmn about two types of radio-frequency front-end imperfections, that is, carrier frequency offset and the inphase/quadrature (I/Q) imbalance
are considered for orthogonal frequency divisionmultiplexing (OFDM) communication systems
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Size: 932864 |
Author: Kingfoo |
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Description: 单片机二级项目，数字频显收音机源程序，谢谢~-MCU two projects, significant number of radio-frequency source, thank you ~
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Size: 38912 |
Author: patrick |
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Description: 介绍认知无线电频谱检测技术，包括传统以及现代方法-Introduction to Cognitive radio frequency spectrum detection technology, including traditional and modern methods
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Size: 875520 |
Author: 刘广川 |
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Description: 认为不同的认知节点信噪比( SNR)
导致了各节点本地检测结果的可靠性不同,故在此基础上提出了一种基于融合中心进行SNR比较
的认知无线电协作频谱检测算法。-That the different cognitive node SNR (SNR) has led to the detection results of the reliability of the local node is different on this basis it was proposed based on fusion center collaboration SNR compared cognitive radio frequency spectrum detection.
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Size: 493568 |
Author: 宝宝 |
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Description: 射频识别技术, 射频识别技术,-Radio Frequency Identification Technology
Radio Frequency Identification Technology
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Size: 549888 |
Author: shj |
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Description: Functional Processing of Wideband
Radio Frequency Hopping Signals
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Size: 102400 |
Author: amirhossein |
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Description: 射频集成电路讲义之射频与微波技术复习-PPT讲稿-RF radio frequency integrated circuits and microwave technology lecture-PPT Review notes
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Size: 750592 |
Author: gujie |
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Description: 一片认知无线电频谱共享技术的综述性的文章，可以全面了解频谱共享技术-A cognitive radio frequency spectrum sharing technology overview of the article, you can fully understand the spectrum sharing technology
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Size: 101376 |
Author: 胡首都 |
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Description: In wireless communications, fading is deviation of the attenuation that a carrier-modulated telecommunication signal experiences over certain propagation media. The fading may vary with time, geographical position and/or radio frequency, and is often modelled as a random process. A fading channel is a communication channel that experiences fading. In wireless systems, fading may either be due to multipath propagation, referred to as multipath induced fading, or due to shadowing from obstacles affecting the wave propagation, sometimes referred to as shadow fading.
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Size: 14336 |
Author: kanniyappan/AIHT |
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Description: 射频识别(radio frequency indentificationx)
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Size: 754688 |
Author: 小高高123
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