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Description: 最大公约数七段显示器编码,各个源描述的编译顺序gcd_disp.vhd,vhdl.vhd,stim.vhd-Seven-Segment Display common denominator coding, various sources described in order to compile gcd_disp.vhd, vhdl.vhd, stim.vhd
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Size: 3072 |
Author: 李扬 |
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Description: 摘要:正交频分复用(OFDM)是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理,重点研究了理想同步情
况下,保护时隙(CP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系
统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,保
护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。
-O FDM is the key techno logy of 4G in the field of mobile comm unication.In this article O FDM
ba sic p rinc ip le is briefly in troduced.Then,the influence of CP and d iffe rent channe l e stim a tion on the system
pe rfo rm ance is emp ha tica lly analyzed respectively in Gauss and R ayle igh fading channe ls in the cond ition of ideal
synchronization.B e sides,based on the given system mode l O FDM system is compu te r sim u la ted w ith MA TLAB
language and the refe rentia l design p rocedure is given.Fina lly,the B ER cu rves of CP and channe l e stim ation a re
given and comp ared.The conclusion is sa tisfac to ry.
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Size: 9216 |
Author: 海之魂 |
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Description: 实现了Linux下毫秒级的软件定时,但依赖于系统HZ数,如 HZ=100,最小定时为10ms HZ=1000,最小定时才是1ms 理论上可以实现若干个定时器,依赖于系统性能-Achieved a Linux software under the millisecond timing, but the number depends on the system, HZ, such as HZ = 100, the minimum timing for the 10ms HZ = 1000, the minimum time to time is 1ms can be achieved theoretically, a number of timers depends on the system performance
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Size: 3072 |
Author: 石矗 |
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Description: 目前在调试串口程序时需要有串口软件把数据显示到上位机上，此程序实现了上位机与下位机的串口通信。-At present in the commissioning program needs a serial port serial port the data shows to superior software on this application implements upper machine and a machine under the serial interface communication.
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Size: 3363840 |
Author: 海浪 |
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Description: 无线传感器网络中的软件校准算法，用于中小规模的传感网络自动非人工校准。-Wireless sensor network software calibration algorithm for small and medium-scale sensor networks to automatically nonlabor calibration.
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Size: 5671936 |
Author: li |
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Description: GSM SIM300 STM8报警器驱动代码-GSM SIM300 STIM Alarm Driver
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Size: 39936 |
Author: 赵健雄 |
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Description: STM8单片机原理与实践随书源码,资料详细，准确，适合STM8单片机初学者-stim source code
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Size: 4818944 |
Author: xiaoyue |
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