5GNR信道编码研究,信道编码是 5G 的关键技术之一,描述了 5G 新空口(NR——New Radio Access)的低密度奇偶校验码(LDPCC——Low Density Parity Check Codes)和 极化码(Polar Codes)的关键技术;通过仿真,比较了5G NR的信道编码方案与 4G LTE信道编码方案的性能。另外,还比较了这2代信道编码技术的复杂度和 吞吐量。
标签: 信道编码
上传时间: 2022-06-30
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以安装文件提供,先执行安装文件,然后到安装目录,打开需要的资源,程序是IAR的,编译能通过,程序注释很清晰,适合相关人员学习。CPU硬件平台:ST STM32F105VBdspin.h 文件,对寄存器结构做了详细的定义,对程序的易读性有很大的帮助:typedef struct{ uint32_t ABS_POS; uint16_t EL_POS; uint32_t MARK; uint32_t SPEED; uint16_t ACC; uint16_t DEC; uint16_t MAX_SPEED; uint16_t MIN_SPEED; uint16_t FS_SPD; uint8_t KVAL_HOLD; uint8_t KVAL_RUN; uint8_t KVAL_ACC; uint8_t KVAL_DEC; uint16_t INT_SPD; uint8_t ST_SLP; uint8_t FN_SLP_ACC; uint8_t FN_SLP_DEC; uint8_t K_THERM; uint8_t ADC_OUT; uint8_t OCD_TH; uint8_t STALL_TH; uint8_t STEP_MODE; uint8_t ALARM_EN; uint16_t CONFIG; uint16_t STATUS;}dSPIN_RegsStruct_TypeDef;同时对过电流的门限值做了通俗易懂的定义,总之是L6470入门编非常好的资料。
上传时间: 2022-06-30
上传用户:1208020161
HC32F003 系列 / HC32F005 系列是 Low Pin Count、宽电压工作范围的 MCU。集成 12 位 1MSPS 高精度 SARADC 以及集成了比较器、多路 UART、SPI、I2C 等丰富的通讯外设,具有高整合度、高抗干扰、高可靠性的特点。本产品内核采用 Cortex-M0+ 内核,配合成熟的 Keil &IAR 调试开发软件,支持 C 语言及汇编语言,汇编指令。Low Pin Count MCU 典型应用⚫ 小家电,充电器,重合闸,遥控器,电子烟,燃气报警器,数显表,温控器,记录仪等行业⚫ 智能交通,智慧城市,智能家居⚫ 火警探头,智能门锁,无线监控等智能传感器应用⚫ 电机驱动
标签: MCU
上传时间: 2022-07-01
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NB-IOT学习总结基于蜂窝的窄带物联网(Narrow Band Internet of Things,NB-loT)成为万物互联网络的一个重要分支。NB-loT构建于蜂窝网络,只消耗大约180KHz的带宽,可直接部署于GSM网络、UMTS网络或LTE网络,以降低部署成本、实现平滑升级。NB-loT是loT领域一个新兴的技术,支持低功耗设备在广域网的蜂窝数据连接,也被叫作低功耗广域网(LPWA)(Low Power Wide Area,低功耗广域技术)。NB-loT支持待机时间长、对网络连接要求较高设备的高效连接。据说NB-loT设备电池寿命可以提高至至少10年,同时还能提供非常全面的室内蜂窝数据连接覆盖。一、NB-IOT架构NB-loT端到端系统框架的建议
标签: NB-IoT
上传时间: 2022-07-02
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摘要:本系统以ICL8038集成块为核心器件,制作一种函数信号发生器,制作成本较低。适合学生学习电子技术测量使用。ICL8038是一种具有多种波形输出的精密振荡集成电路,只需要个别的外部元件就能产生从0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脉冲信号。输出波形的频率和占空比还可以由电流或电阻控制。另外由于该芯片具有调制信号输入端,所以可以用来对低频信号进行频率调制。关键词:函数信号发生器频率调制Abstract:The system ICL8038 integrated block as the core device,producing a kind of function signal generator,producing low cost.Suitable for students to learn the use of electronic technology measurement.ICL8038 is a kind of multi-precision oscillator waveform output integrated circuits,a separate external components only need to be able to generate from the 0.001Hz ~30KHz low-distortion sine wave,triangle wave,square wave pulse signal,etc..Output waveform of the frequency and duty cycle can also be controlled by a currentor resistance.In addition,as the chip has a modulated signal input terminal,it can be used to low-frequency signal is frequency modulation.
上传时间: 2022-07-04
上传用户:zhanglei193
MotioninterfaceTM is becoming a "must-have"function being adopted by smartphone and tablet manufacturers due to the enormous value it adds to the end user experience. In smartphones, it finds use in applications such as gesture commands for applications and phone control, enhanced gaming, augmented reality, panoramic photo capture and viewing, and pedestrian and vehicle navigation. With its ability to precisely and accurately track user motions, MotionTracking technology can convert handsets and tablets into powerful 3D intelligent devices that can be used in applications ranging from health and fitness monitoring to location-based services. Key requirements for Motionlnterface enabled devices are small package size, low power consumption, high accuracy and repeatability, high shock tolerance, and application specific performance programmability-all at a low consumer price point.
标签: mpu6050
上传时间: 2022-07-06
上传用户:zhaiyawei
Agenda■Motor Types Overview■BLDC Motor Applications■Comparison of DC to Brushless DC Motors■Hall Sensors■Six-Step Commutation■Sensorless Commutation with Back-EMFVector Motor Control basicsClosed-Loop Speed Control■Introduction to BLDC Motor Control Evaluation Kit■SummaryAll the popular motor types have their specific applications, and all can be controlled with microcontrollers.We wll talk about Brushless DC motors as it is the fast growing motor type today.Motors used in modern Air conditioners, home appliances, tools, even electric bikes are all going to Brushless DC.
上传时间: 2022-07-07
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AP3852 是一款拥有 CPU 和 DSP 双核的智能音频/语音处理芯片。芯片内置有 32 位 CPU 和 32 位 DSP 以及 2M FLASH,配合丰富的外围控制接口,非常适合各 种智能音频/语音处理系统。 该芯片配合菁音科技各种专利音频处理算法,能处理从声音输入、噪声消除、 音频预补偿、音效处理到声音回放的一个完整的音频通路;仅需配备简单的外围 器件即可组成高品质的音频输入/回放系统。能极大的提升产品的性能。 芯片内置 32Bits CPU,拥有良好的开发环境;内置 32Bits 音效处理 DSP,支 持浮点数运算、支持 FFT,方便各种进行各种算法编写;此外,为增加运算能力, 芯片还内置有一块专用的 Hardware Engine 单元,特别适合高速 FIR/IIR 运算。 芯片内置24Bits的Audio Codec,具有较高的SNR、THD。内置112KBytesSRAM; 内置 32 位 OTP Key,支持用户程序加密。 具有丰富的外围接口,包括 Full Speed USB Device、10Bits SAR ADC、SPI、I2C、 I2S、UART、GPIO 等。
上传时间: 2022-07-07
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学习并了解LPDDR4协议内容,官方资料,非常全面。
标签: lpddr4
上传时间: 2022-07-18
上传用户:qingfengchizhu
Simulation can provide a lot of information about what the system is doing. We canadd the effect of different element, like Encoder resolution, ADC sampling rate, etc and understand how does it affect the system. Another benefit is the possibility to slow down the process, to gain insight on what happens of fast systems or, vice versa, speed up slow process.Because National Instruments is a unique company in the fact the we provide a fullhardware solution couple with a full development platform, we can use this tools in very particular ways For example, it is possible to combine the LabVIEW Control Design and Simulation Module along with the FPGA module to quickly prototype a controller. One of the main benefits of this approach is that there is no need to compile the FPGA code, which allows for a quick algorithm design turnaround and debugging.
标签: pid控制
上传时间: 2022-07-20
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