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Description: 通过stc12c5410ad控制RDA5820音频芯片的收音功能，包括音量调节与频率调节，再将其显示在nokia5110上(By STC12C5410AD control RDA5820 audio chip radio function, including volume adjustment and frequency adjustment, and then displayed on the Nokia5110)
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Size: 88064 |
Author: wang51950
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Description: 跳频电台是按全网预设的程序，自动操控网内所有台站在一秒钟内同步改变频率多次，并在每个跳频信道上短暂停留。周期性的同步信令从主站发出，指令所有的从站同时跳跃式更换工作频率。跳频电台的目的是增强抗干扰能力和通信隐蔽性，是电子对抗技术发展的产物(The frequency hopping station is a program that is preset by the whole network, and automatically controls all stations in the network to change the frequency synchronously in a second, and stay briefly on each frequency hopping channel. The periodic synchronous signaling is sent from the main station, indicating that all the slave stations change their operating frequency simultaneously. The purpose of frequency hopping radio is to enhance the anti-interference ability and communication concealment, which is the product of the development of electronic countermeasure technology)
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Size: 18975744 |
Author: LIU__
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Description: DSP FM收音机,按键和蓝牙串口控制，自动搜台或者手动输入频率，MCU：STC12C5A60S2，晶振：11.0592M。(DSP FM radio, buttons and Bluetooth serial control, automatic search table or manual input frequency, MCU:STC12C5A60S2, crystal oscillator: 11.0592M.)
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Size: 15183872 |
Author: 探求者
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Description: 设计一个具有时、分、秒计时的电子钟，按24小时计时。要求：
（1）数字钟的时间用六位数码管分别显示时、分、秒；
（2）用两个控制键，对数字钟分别进行分、时校正；
（3）具有仿广播电台整点报时的功能。即每逢59分51秒、53秒、55秒及57秒时，发出4声500Hz低音，在59分59秒时发出一声1kHz高音，它们的持续时间均为1秒。最后一声高音结束的时刻恰好为正点时刻。
（4）具有定时闹钟功能，且最长闹铃时间为1分钟。要求可以任意设置闹钟的时、分；闹铃信号为500Hz和1kHz的方波信号，两种频率的信号交替输出，且均持续1秒。设置一个停止闹铃控制键，可以停止输出闹铃信号。
（5）输入时钟脉冲的频率为50MHz。(Design an electronic clock with time, minutes and seconds, and time by 24 hours. Requirements:
(1) the time of digital clock is shown with six digital tubes, respectively, minutes and seconds;
(2) two control keys are used to divide and adjust the digital clock respectively.
(3) it has the function of imitating radio station. That means that at 59 minutes, 51 seconds, 53 seconds, 55 seconds and 57 seconds, a 4 500Hz bass is emitted. A 1kHz note is emitted at 59 minutes 59 seconds, and their duration is 1 second. The end of the last treble is exactly the moment of truth.
(4) it has a timer function and the longest alarm time is 1 minute. Ask to set the alarm clock at any time. The alarm signal is a square wave signal of 500Hz and 1kHz. The signals of both frequencies alternate and output for one second. Set a stop alarm button to stop the output alarm signal.
(5) the frequency of input clock pulse is 50MHz.)
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Size: 52224 |
Author: LIMBO2K
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Description: Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short Range Devices (SRD);
Radio equipment to be used in the 25 MHz to 1 000 MHz
frequency range with power levels ranging up to 500 mW;
Part 1: Technical characteristics and test methods
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Size: 608256 |
Author: ezz
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Description: Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Short range devices;
Radio equipment to be used
in the 1 GHz to 40 GHz frequency range;
Part 1: Technical characteristics and
test methods
Platform: |
Size: 455680 |
Author: ezz
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Description: 频谱感知需要的认知无线电中顺序，寻找机会频谱的灵活使用。此外，它是干扰的管理造成水平的关键向初级用户 （PUs） 的频谱。遥感提供了
无线电操作环境的意识。认知电台可然后适应它的参数如载波频率电源和波形动态调整提供最好的服务可用的连接，以满足用户的需求范围内
对干扰约束。无线通信系统中，我们通常有一些对波形的知识和结构或统计属性的信号的频谱的主要用户使用。这种知识可能相关的调制
计划、 符号或芯片的信号，通道的速率。(Spectrum sensing requires the order of cognitive radio, looking for flexible use of opportunistic spectrum. In addition, it is the spectrum that disturbs the level of management caused by primary users (PUs). Remote sensing provides awareness of the radio operating environment. Cognitive stations can then adapt to its parameters such as carrier frequency power and waveform dynamics to provide the best service available to connect to meet user constraints on interference requirements. In wireless communication systems, we usually have some primary users who have knowledge of the waveform and the spectrum of the signal of the structure or statistic properties. This knowledge may be related to the modulation scheme, symbol or chip signal, channel speed.)
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Size: 12288 |
Author: 晓骸 |
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Description: 认知无线电，宽频带频谱感知算法仿真。包括频谱感知算法，信号建模，仿真图(cognitive radio. wide frequency band spectrum sensing, including algorithm, modeling, figures)
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Size: 313344 |
Author: Gavin野 |
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Description: TRC105是一款单芯片，多通道，低功耗的UHF收发器。 它专为300至510 MHz频率范围内的低成本，大容量，双向短程无线应用而设计。 TRC105是FCC＆ETSI认证。 所有关键的RF和基带功能都集成在TRC105中，最大限度地减少了外部元件数量，并简化和加快了设计。 微控制器，RF SAW滤波器，12.8 MHz晶振和一些无源器件都是创建完整，可靠的无线电功能所需要的。 TRC105集成了一组低功耗状态以减少电流消耗并延长电池寿命。 TRC105的小尺寸和低功耗使其成为各种短程无线电应用的理想选择。 TRC105符合指令2002/95 / EC（RoHS）。(TRC105 is a single chip, multi-channel, low power UHF transceiver. It is designed for low cost, high volume, two-way short range wireless applications in the 300 to 510 MHz frequency range. The TRC105 is FCC & ETSI certifiable. All critical RF and base-band functions are integrated in the TRC105, minimizing external component count and simplifying and speeding design-ins. A microcontroller, RF SAW filter, 12.8 MHz crystal and a few passive components are all that is needed to create a complete, robust radio function. The TRC105 incorporates a set of low-power states to reduce current consumption and extend battery life. The small size and low power consumption of the TRC105 make it ideal for a wide variety of short range radio applications. The TRC105 complies with Directive 2002/95/EC (RoHS).)
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Size: 3112960 |
Author: zbm138 |
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Description: 该程序是软件无线电中信道化技术的仿真历程，使用了“基本结构”，将32个频率分量进行调制，平均调制在频谱之中，提升了发射信号的频谱利用率。(This program is the simulation process of channelization technology in software radio. It uses the "basic structure" to modulate 32 frequency components. The average modulation is in the spectrum, which improves the spectrum utilization of the transmitted signal.)
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Size: 1024 |
Author: CheungGK |
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