Description: 有关水声通信中基于OFDM的多普勒频移的估计与补偿-the underwater communication OFDM-based Doppler frequency shift and the estimated compensation Platform: |
Size: 497664 |
Author:elitedadi |
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Description: ＯＦＤＭ程序 用于ＭＡＴＬＡＢ仿真 内容为带多普勒频移的瑞利衰落信道
-OFDM procedures for the content of MATLAB with Doppler frequency shift of Rayleigh fading channels Platform: |
Size: 3072 |
Author:唐成玉 |
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Description: ofdm的完整系统模型,包含信道参数,多径模型,doppler频移等都可以自由修改!是您做仿真的有力帮助.c语言运行速度快!-complete OFDM system model, including channel parameters, multi-path model, doppler frequency shift and so are free to modify! is your help to make a powerful simulation. c language fast! Platform: |
Size: 518144 |
Author:Li Ming |
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Description: ofdm仿真程序有关信道传输中的多径效应，多普勒频移，时延扩展-OFDM simulation program on the transmission channel of multi-path effects, Doppler frequency shift, delay spread Platform: |
Size: 1024 |
Author:时光 |
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Description: 掌握梳状导频和信道估计算法，实现MATLAB仿真；建立简单的系统结构和信道模型；在含多普勒频移的瑞利衰落信道下，进行含信道估计算法的OFDM系统仿真，并进行性能分析。
-Comb master and pilot channel estimation algorithm, the realization of MATLAB simulation the establishment of a simple system structure and channel model with Doppler frequency shift in the Rayleigh fading channel, the channel estimation algorithm with the OFDM system simulation and performance analysis. Platform: |
Size: 10240 |
Author:林杉 |
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Description: OFDM整个系统结构，包括上下变频，多普勒频移，以及星座图调制和系统参数计算。-OFDM structure of the entire system, including upper and lower frequency, Doppler frequency shift, as well as the modulation constellation diagram and system parameters. Platform: |
Size: 2048 |
Author:罗西基 |
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Description: 在OFDM系统中，针对多普勒频偏采用多种算法进行校正，该文总结了这些算法。-In OFDM system, for the use of a wide range of Doppler shift correction algorithm, the text summary of the algorithm. Platform: |
Size: 344064 |
Author:brady.zhou |
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Description: 离散分数阶傅里叶变换，可以处理非平稳信号，也可以很好的对抗多普勒频移，用在OFDM系统中尤为重要。-Discrete fractional Fourier transform, can handle non-stationary signal can also be very good against the Doppler frequency shift, used in the OFDM system is particularly important. Platform: |
Size: 1024 |
Author:suokun |
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Description: OFDM水声通信中最大多普勒频偏估计算法研究-OFDM underwater acoustic communication in the largest Doppler shift estimation algorithm Platform: |
Size: 692224 |
Author:王凯 |
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Description: OFDM系统的最大似然同步（ML）算法的程序，信道模型为带有多普勒频移的瑞利衰落信道。-OFDM system maximum likelihood synchronization procedures (ML) algorithm, the channel model with the Doppler shift of the Rayleigh fading channel. Platform: |
Size: 1024 |
Author:zhangwei |
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Description: 进行OFDM系统的matlab仿真，其中采用的子载波数为8个。并且仿真了多普勒频移对OFDM的影响。基带调制采用QPSK-Matlab simulation for OFDM system, which USES the subcarrier number is eight.And simulation of the doppler shift effect on OFDM.Baseband using QPSK modulation Platform: |
Size: 2048 |
Author:zxyxiaoyuer |
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Description: 在研究了超高速OFDM系统传输模型的基础上，对OFDM系统的传输信号结构进行了分析，结合传统的多普勒频移算法，用OFDM信号循环前缀所包含的相对频偏信息设计了实时性较好的多普勒频移估计方法，并分析了多径效应对于循环前缀数据的“污染”效应，对该算法进行了优化，提高了算法的频移估计性能，并对该算法进行了性能验证。-Based on the study ultra-high-speed transmission of OFDM system model, the OFDM signal structure for the transmission system is analyzed, combined with traditional Doppler shift method, the relative deviation OFDM signal with cyclic prefix information contained in the real-time design Doppler shift better estimation methods, and analyzes the " pollution" effect of multipath effects for cyclic prefix data, the algorithm has been optimized to improve the frequency estimation algorithm performance and the performance of the algorithm verification. Platform: |
Size: 22528 |
Author:但的东 |
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Description: 简化的OFDM系统仿真，其中暂未考虑扰码和卷积码，物理层参数采用802.11a参数，1个长训练符号与6个OFDM数据符号构成1帧，信道为单径rayleigh衰落信道，其中最大多普勒频移为100Hz，信噪比0-30dB，调制方式为QPSK和16-QAM。-Simplified OFDM system simulation, which yet consider scrambling and convolution codes, physical layer parameters using 802.11a parameters, a long training symbols and six OFDM data symbols constitute a channel for single-path rayleigh fading channel, one of the largest Doppler shift is 100Hz, the SNR 0-30dB, the modulation scheme is QPSK and 16-QAM. Platform: |
Size: 3072 |
Author:PengJ |
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Description: Application of spread spectrum for satellite land mobile systems is difficult in satellite link because of synchronization and
providing code or considerable Doppler shift. This is particularly high for LEO satellites. So that, a Doppler shift carrying a
frequency in band S can reach to several tens of kHz. To estimate and compensate Doppler, a CW pilot carrier is used. The
aim of this study is simulate Doppler frequency estimation using MIMO-OFDM technique. Finally, the proposed algorithm is
compared to MMSE algorithm in order to insure its performance. Platform: |
Size: 136192 |
Author:Neo Matrix |
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Description: OFDM信号在无线通信中会受到多普勒频移的影响，从而影响了OFDM信号的正交性，引起载波间的干扰和OFDM信号符号间的干扰，本代码先形成含有N个二进制码元的信号，而这个信号的前半部分和后半部分的信号是一样的，然后根据把这个信号调制成OFDM信号，最后接收端根据这个OFDM信号估计出多普勒因子-OFDM signal in a wireless communication will be subject to Doppler shift of influence, thus affecting the OFDM signal orthogonality, causing interference and interference between the OFDM signal symbol between carriers, the code first formed comprising N binary symbols signal, and the first and second halves of this signal is the same signal, and then the OFDM signal according to the estimated Doppler factor modulates the signal to the OFDM signal received, the last side Platform: |
Size: 8192 |
Author:hero |
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Description: 基于传统信道估计LS，MMSE，和不同多普勒频移下的误码率等(Based on the traditional channel estimation ls, MMSE, and different Doppler frequency shift bit error rate) Platform: |
Size: 110592 |
Author:阿珂珂珂 |
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