Search - frequency spectrum estimation

Search - frequency spectrum estimation - List

[Communication-Mobile] DS_SS_2_6 DL : 0: 扩展的直序扩频系统，包括了同步，信道估计，频偏和频偏估计-Expansion of the Direct Sequence Spread Spectrum system, including synchronization, channel estimation, frequency offset and frequency offset estimation
Date : 2025-12-24 Size : 21kb User : huwedavid
[Communication-Mobile] ofdmpathest DL : 0: 描述了频域的信道估计的相关知识，描述了频谱估计的优化算法易于实现-Described the frequency domain channel estimation of the relevant knowledge, describes the spectrum estimation algorithm is easy to implement
Date : 2025-12-24 Size : 315kb User : chenxin
[Communication-Mobile] Fourier--parameter-estimation- DL : 0: 本次实验主要是对一个正弦信号加入高斯白噪声，然后通过傅里叶变换对正弦信号进行谱估计。最后要用matlab进行仿真，得到正弦函数的时域和频域波形，关键找出信噪比和正弦信号频谱的均方误差之间的关系。-The experiment is a sinusoidal signal which is to white Gaussian noise, then by Fourier transform of the sinusoidal signal spectrum estimation. Finally, using the matlab simulation, sine function in time domain and frequency domain waveforms.
Date : 2025-12-24 Size : 39kb User : zjc
[Communication-Mobile] 5 DL : 2: 5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(5. In three-path Rayleigh channel, for direct sequence spread spectrum: (1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate. (2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve. (3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)
Date : 2019-01-15 Size : 3.39mb User : kmdcdy