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ofdm_cp
对ofdm不同cp长度下系统性能的分析(Performance analysis of OFDM systems with different CP lengths)
- 2021-01-29 22:08:34下载
- 积分：1
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digitalsystem
数字基带系统,运行无码间干扰数字基带传输特性及眼图的程序，观察所有的结果，对结果做出分析(Digital base-band system, running without inter-symbol interference digital base-band transmission characteristics and the eye diagram of the procedure, observe all the results of an analysis of the results)
- 2021-05-09 18:08:34下载
- 积分：1
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《C++ Primer 3e 题解》
说明： C++ Primer中文版及题解,一本学习C++的好书.(C Primer and that the Chinese version of Solutions, a learning C books.)
- 2005-10-18 12:42:04下载
- 积分：1
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BPSK调制仿真
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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appleyueyu_13656
苹果手机完美越狱软件 支持6.1 6.12(IPhone 6.1 jailbreak software support 6.12)
- 2013-05-22 21:42:49下载
- 积分：1
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QAM_RAY_REP
this is a code that shows QAM consetellation with data repetition (3 time repetition)
the transmitted signal goes through flat fading Rayleigh channel
- 2012-04-05 19:24:27下载
- 积分：1
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相参积累
雷达系统，基于matlab实现雷达信号的相参积累的简单代码(Radar system, based on MATLAB, is a simple code for coherent accumulation of radar signals.)
- 2021-03-25 19:29:13下载
- 积分：1
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4
说明： ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2
种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本
思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列
的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods
。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency
ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits．
Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix—
based algorithm has less complexity and less precision。and that the training sequence—based algorithm
has better estimation performance at the cost of transmission efficiency．)
- 2010-05-18 18:34:44下载
- 积分：1
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MIMO_OFDM联合仿真的matlab 源程序（很完整）
MIMO——OFDM系统实现,代码完整，适合练习使用(The implementation of MIMO and OFDM system)
- 2021-04-17 22:08:52下载
- 积分：1
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chapter3
知道完美信道状态信息与不知道信道状态信息的信道容量的对比(Know the perfect channel state information and does not know the channel state information of the channel capacity of the contrast)
- 2013-03-30 10:09:54下载
- 积分：1
