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Base-band-
基带数字传输系统的仿真 基带传输系统的基本结构带限信道的仿真以及性能分析；眼图和星座图判断信号的传输质量。
(Base-band digital transmission system simulation-based transmission system with the basic structure of band-limited channel simulation and performance analysis eye diagrams and constellation to determine the signal transmission quality.)
- 2011-05-19 15:36:02下载
- 积分：1
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BPSK调制仿真
说明： bpsk调制仿真，可直接用
1、数字调制方法
数字调制就是把数字基带信号的频谱搬移到高频处，形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控（ASK）、频移键控（FSK）、绝对相移键控（PSK）、相对（差分）相移键控（DPSK）。在接收端可以采用想干解调或非相干解调还原数字基带信号。
数字信号的传输方式分为基带传输和带通传输。然而，实际中的大多数信道（如）无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输，必须用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。(1, digital modulation method
Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation.
Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)
- 2019-05-28 10:46:01下载
- 积分：1
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wireless-communication
无线通信经典教材（杨鸿文译），（美）哥德史密斯（Goldsmith,A.）著。（图灵电子与电气工程丛书）(Classic textbook of wireless communication (Yang Hongwen translation), (U.S.) Goldsmith (Goldsmith, A.). (Turing Electronic and Electrical Engineering Series))
- 2012-05-18 11:55:47下载
- 积分：1
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shoujidayin
把手机的imei已一个中箱收集，并打印出该收集的一些信息。(Phone imei in box collection, and print out the collected information.)
- 2012-09-08 15:31:15下载
- 积分：1
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基于MATLAB的遗传算法及其在稀布阵列天线中的应用
说明： 利用优化算法实现稀布阵列天线方向图分析与综合(Pattern synthesis of array antenna using optimization algorithm)
- 2021-01-20 10:48:41下载
- 积分：1
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LTE_Advanced-CoMP-Research
协作多点传输技术及其原理，对CoMP技术中的协作簇选择、CoMP用户划分、用户传输方案及预编码做出了介绍，通过仿真对比得到采用CoMP技术的系统性能增益(LTE CoMP Research)
- 2012-12-07 08:55:08下载
- 积分：1
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stm32 CRC-DEMO
ModBus水质分析仪CRC计算的接口STM32F2实现，此应用适用于市面大部分Modbus水质协议的CRC校验(ModBus water quality analyzer CRC calculation of the interface STM32F2 implementation, this application is applicable to most of the market Modbus water quality agreement CRC calibration)
- 2017-08-09 15:42:04下载
- 积分：1
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OFDM_PTS_huadongchuang
引入滑动窗的PTS改进算法。出CCDF图，与未经过处理的原始曲线经行比较(The introduction of the PTS to improve the sliding window algorithm. A CCDF diagram, and has not been dealt with by the original line curve comparison)
- 2008-05-17 11:37:27下载
- 积分：1
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时频信号分析
实现绘制信号的功率谱，两重自相关，滤波后时域，滤波器，频谱图，信号时域图以及自相关函数图等功能(The functions of drawing signal power spectrum, double correlation, filtering time domain, filter, spectrum, signal time domain and autocorrelation function diagram are realized.)
- 2021-03-01 21:39:34下载
- 积分：1
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DVB-S2-communication-chain-master
DVB-S2通信链的设计与仿真，使用了LDPC编码以及多种QAM调制方式。(Design and simulation of a DVB-S2 communication chain,LDPC coding and a variety of QAM modulation methods are used.)
- 2018-04-28 16:36:23下载
- 积分：1
