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slaa365
- Clear Channel Assessment Using TI MSP430 and CC2500 Radio-This application report describes a 2.4-GHz anti-jamming frequency-hopping system consisting of a designated Transmitter and Receiver, each with distinct functions to avoid RF-channel interfer
work
- fsk modulation Frequency shift keying (FSK) is the most common form of digital modulation in the high-frequency radio spectrum, and has important applications in telephone circuits. This article provides a general tutorial on FSK in its man
LCD_shouyin
- 基于LCD显示的收音机程序，可以显示97MHZ至108MHZ的频率，用52单片机实现，是工程学院的项目，已通过硬件实现，程序运行稳定。-LCD display based on radio program, can show the frequency of 97MHZ to 108MHZ with 52 SCM is the engineering college project, has passed the hardware implementation, the program stab
20070823003
- 自动识别系统电台的卞要功能是在接收状态将接收到的射频信号解调成高斯最小频移键控(GMSI})比特流以供信号处理板使用 而在发射状态则将来自处理板的9.6 kbps的GMSI}比特流调制成适合发射的射频信号并发射。木电台使用半双工方式工作，共用一副大线，其中发射通路只有一个通道，但可通过微处理器改变调制芯片LMX1501的内部设置数以产生两个频率，然后再经过卜变频得到中心频率分别为162.025 MHz和161.975 MHz的发射信号 木电台的接收则分为二路，其解调芯片都是用TA31136来实
pro_sdr
- in this code i have implemented the algorithm to find the minimum sampling frequency bandpasss sampling used in Software defined radio
Co-OFDM
- 光纤射频传输系统中相干正交频分复用的研究，介绍了系统的结构和性能,是一份很不错的学习材料。-Coherent optical fiber radio transmission system using orthogonal frequency division multiplexing, introduces the system structure and performance, is a very good learning materials.
ruanjianwuxiandian
- 软件无线电平台硬件设计，包括下变频的具体参数设计。-Software radio platform hardware design, including the specific parameters under the design frequency.
xhfsqyanjiu
- 基于直接数字频率合成(DDS) 原理，利用AT89C52 单片机作为控制器件，采用AD9850 型DDS 器件设计一个信号发生器。给出了信号发生器的硬件设计和软件设计参数，该系统可输出正弦 波、方波，且频带较宽、频率稳定度高，波形良好。该信号发生器具有更强的市场竞争力，在跳频技术、 无线电通信技术方面具有比较广阔的发展前景。-Based on Direct Digital Synthesis (DDS) theory, using AT89C52 microcontroller as
TheoryCodeDivisionMultipleAccess
- THEORY OF CODE DIVISION MULTIPLE ACCESS COMMUNICATION The objective of this book is to provide an introduction to code division multipleaccess (CDMA) communications. Our motivation for emphasizing CDMA communication is a result of the tec
1propagation
- Radio Propagation • Large scale fades – Attenuation: in free space, power degrades by 1/d2 – Shadows: signals blocked by obstructing structures • Small scale fades – Multipath effects: » Rapid changes in signal strength over
91315v00_BPU_us
- Relaying and orthogonal frequency division multiple access (OFDMA) are the accepted technologies for emerging wireless communications standards. The activities in many wireless standardization bodies and forums, for example IEEE 802.16 j/m an
tiaopinshouyinduijiangjibiyesheji
- 对讲机的用途很广泛，发送原理是把音频信号转换成电信号,再通过调制之后利用特定的频率范围发送出去。 接收是利用接收器对特定的频率范围之内收到的信号通过解调之后通过扬音器发出收到的信息声音 -Radio is so widely used, principle is to send the audio signals into electrical signals, then through the modulation after the use of a particular freq
MobileFadingChannelsModellingAnalysisSimulation.ra
- 本书是关于无线衰落信道方面的一本好书，书中内含MATLAB代码！ -All relevant components of a mobile radio system, from digital modulation techniques over channel coding through to network aspects, are determined by the propagation characteristics of the channel. Therefore, a pr
A_number_of_high-speed_digital_radio_implementatio
- 一种高速数字电台数字上变频的FPGA实现-A number of high-speed digital radio implementation on the frequency of the FPGA
Performance_Analysis_of_PN_Code_Acquisition
- 文章中主要阐述了PN码的捕获，并对以前的各种捕获方法进行了改进。得出了基于FFT的快速捕获算法！-Abstract-A FFT-based parallel acquisition algorithm for Direct Sequence/Spread Spectrum radio navigation system is studied to solve long PN code acquisition using serial method. Frequency domain
AR1010
- AR1010收音模块控制程序，有详细的子程序中文注释，可直接复制调用。最后做成一个AR1010(XX)程序，XX放入一个频率值，就能让收音机收此频率的电台。-AR1010 radio module control program, a detailed subroutine Chinese translations, can be directly copied calls. Finally, make a AR1010 (XX) program, the middle into a frequ
FM_TEA5767_Code
- 这个程序是一个FM收音机程序..收音机采用TEM5767FM模块，单片机采用STC89C52，可以接收到波段为87.5~108MHz范围内的所有频段的信号。-This program is an FM radio with radio program .. TEM5767FM modules, the SCM STC89C52, can receive the band is 87.5 ~ 108MHz frequency range of the signal of all.
audio
- 多功能数字调频收音机，采用TEA5767芯片，在实现收音机功能的基础上，附加以12864显示当前频率、万年历、温度，并可通过24c02存台，频率、时间都可以调整。-Multifunction digital FM radio, using TEA5767 chip, based on the realization of radio, additional to 12864 shows the current frequency, calendar, temperature, and throu
CXA1019
- 本调频收音机主要由FM/AM收音机芯片CXA1019、PLL且频率合成器BU2614和单片机AT98C51组成。收音机以单片机AT98C51为控制核心, 实现全频搜索、指定频率范围搜索和手动搜索电台 本收音机还使用了数字电位器(X9511)控制音量。采用液晶显示器显示载频和时钟等信息, 大幅度降低了系统的功耗。整机实现3V 电源工作, 采用E2PROM(AT24C04)存储电台, 还增加了立体声解码功能。-Mainly by the FM radio FM/AM radio IC CXA1019
wireless-transmitter
- nRF24.L01是一款新型单片射频收发器件,工作于2.4 GHz～2.5 GHz ISM频段。内置频率合成器、功率放大器、晶体振荡器、调制器等功能模块,并融合了增强型ShockBurst技术，其中输出功率和通信频道可通过程序进行配置。nRF24L01功耗低,在以-6 dBm的功率发射时，工作电流也只有9 mA 接收时，工作电流只有12.3 mA，多种低功率工作模式(掉电模式和空闲模式)使节能设计更方便。 -nRF24.L01 is a new single-chip radio trans