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OFDM
OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。
频率选择性信道的特征在于延迟扩展或相干带宽,其测量频率中的信道去相关。
相干带宽与均方根(RMS)时延扩展成反比。
通过选择与信道相干带宽相关的子载波间隔,OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。
适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity.
Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency.
The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread.
By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels.
Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)
- 2018-05-03 13:55:13下载
- 积分:1
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concatenated_code_awgn
级联码simulink模型,OFDM系统误码率分析(concatenated code in simulink)
- 2010-06-03 21:33:57下载
- 积分:1
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DNAtranslator
DNAtranslator 是一个用于将DNA 序列转换成相对于他的蛋白质序列的一个方程。这是本方程的代码。(DNAtranslator is a small function to convert a DNA sequence into the correspondent protein sequence.)
- 2011-01-22 01:12:15下载
- 积分:1
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Test_code_kmeans_2
Clustering an image using k-means algorithm
- 2010-05-22 13:00:50下载
- 积分:1
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tts
describes the text to speech conversion using matlab
- 2021-04-07 18:29:01下载
- 积分:1
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CallMatlab
一个能够与Trnsys联合运行的增量式PID的m文件里面有中英混合说明。(An incremental PID Trnsys jointly run the m file inside the mixed.)
- 2021-01-27 09:38:40下载
- 积分:1
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SAR_ECHO_SIMULATE_V2
第2种方法SAR雷达在斜视角etha下,雷达回波信号仿真
(SAR ECHO SIMULATION)
- 2013-10-12 22:18:36下载
- 积分:1
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poddem
用于对复杂流场的POD分析,对流场结构进行解构重组(PODDEM is a state of the art detection and estimation method for outliers in Particle Image Velocimetry data. PODDEM can be used on two-dimension and three dimensional data, with up to three velocity components.)
- 2020-11-18 21:59:39下载
- 积分:1
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spread-spectrum
QAM调制编程,MATLAB仿真。通信系统设计(QAM modulation programming)
- 2013-01-20 21:03:33下载
- 积分:1
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pitchshiftdemo
以matlab做pitch-shift的功能展示.基於phase-vocoder技術在頻域上做pitch-shift.(In matlab to do the pitch-shift function display based on phase-vocoder techniques in the frequency domain to make pitch-shift.)
- 2013-11-08 10:39:37下载
- 积分:1