Description: 这是篇一种利用PN序列的OFDM频率同步，觉得很有用，与大家共同享用。-this chapter is a use of the PN sequence OFDM frequency synchronization, feel useful, and we enjoyment. Platform: |
Size: 153772 |
Author:Tony |
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Description: It s a IEEE paper.In this paper,the author proposed two new frequency synchronization unsing PN sequences for OFDM system. Platform: |
Size: 189840 |
Author:fisher |
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Description: 以pn码为信源，通过定时同步和载波恢复。在收端得到正确的信息。-Pn in the source code for the letter, through the timing synchronization and carrier recovery. Client in the admission to be correct information. Platform: |
Size: 10240 |
Author:wupengcheng |
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Description: 用matlab进行直序扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真-Using matlab for Direct Sequence Spread Spectrum Communication System Simulation and Analysis of bit error rate PN code synchronization methods and simulation Platform: |
Size: 12288 |
Author:吴胜军 |
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Description: 直接序列扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真-Direct Sequence Spread Spectrum Communication System Simulation and Analysis of BER PN Code Synchronization Methods and Simulation Platform: |
Size: 14336 |
Author:frozen |
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Description: 介绍了MATLAB下如何实现直接扩频序列的PN伪随机码如何实现同步 并给出结果-Describes how MATLAB directly under the PN spreading sequence PN code to achieve synchronization and gives the results Platform: |
Size: 724992 |
Author:贾杨 |
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Description: 完成直接序列扩频系统的伪码精确同步，并用FPGA进行实现-Complete the direct sequence spread spectrum system PN precise synchronization, and implementation with FPGA for Platform: |
Size: 31744 |
Author:jiajia |
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Description: 直接序列扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真-Direct sequence spread spectrum communication system of the simulation analysis of PN Code Synchronization Comparison and Simulation Platform: |
Size: 12288 |
Author:hannah |
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Description: 一种基于PN训练序列的OFDM时频同步的新算法。通过构造倒序结构的同步训练序列-PN training sequence based on the OFDM time and frequency synchronization of the new algorithm. Structure by constructing a reverse synchronization of training sequences Platform: |
Size: 4096 |
Author:tianyu |
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Description: A 16-QAM signal X, whose power is normalized as unity, is transmitted with OFDM over the discrete-time channel model h which has been used in Homework #2 and #3. As depicted in the below figure, the transmitter (TX) is now equipped with an N-point IDFT and the receiver (RX) with an N-point DFT, along with adding cyclic prefix (CP) and removing CP removal, respectively. The complex AWGN n is set with 20 dB SNR. Suppose that N=256 and the length of CP is 64. Assuming the OFDM system works with perfect synchronization. -Generate two pseudo random (PN) sequences for X, each with a length of 256 samples which are taken {+1,-1}, and add them before the 16-QAM data with a proper CP. The OFDM frame is depicted in the following figure. PN1 and PN2 are used for channel estimation now. Suppose the PN patterns are known at RX. Use the least squares (LS) method to estimate the channel by averaging the results obtained individually PN1 and PN2. (When perfoming the DFT window for the received signal at RX, you need to notice that the channel results in a delay of 22 samples.) Platform: |
Size: 210944 |
Author:淘爱57 |
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Description: ofdm 传输与接受的各项例子
-OFDM Receiver
1. Initalize the USRP setting the RX parameters and moving the LO outside the transmission band.
2. Generate random data bits (PN Sequence) (125 bits)
3. Use the Van De Beek algorithm to detect the cyclic prefix locatoins for synchronization and estimate frequency offset
4. Remove the cyclic prefix
5. Remove the frequency offset the incoming signal
6. Compute the FFT convertin the time domain OFDM symbol to the frequency domain
7. Separate data bits, reference bits, and remove zero padding
8.Compute equalization coefficients using a linear fit for both I and Q based on reference symbols
9. Apply the equalization to the data symbols
10. Convert data symbol mapping back to data bits Platform: |
Size: 460800 |
Author:kai |
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Description: 基于PN序列的同步仿真链路,收端算法为接受序列与本地序列求滑动相关,-Simulation based on PN sequence synchronization of link, and receiving algorithm for sequence related to the local sequence and sliding, Platform: |
Size: 21504 |
Author:partkhej |
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Description: 直接序列扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真-Bit error rate of direct sequence spread spectrum communication system simulation analysis of the comparison of PN code synchronization method and simulation Platform: |
Size: 3072 |
Author:oicm@7074 |
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Description: 基于PN序列的同步仿真链路,收端算法为接受序列与本地序列求滑动相关,-Simulation based on PN sequence synchronization of link, and receiving algorithm for sequence related to the local sequence and sliding, Platform: |
Size: 21504 |
Author:menher |
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