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This project aim was to build wireless software modem for data communication
between two computers using an acoustic interface in the voice frequency range (20Hz–
20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz –
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OFDM同步算法分析比较，用于个人学习使用 -Analysis and comparison of OFDM synchronization algorithm, used for personal learning
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Physique for synchronization OFDM
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Part II presents the fundamental concepts andMATLAB programs for simulation ofOFDM
transmission techniques including OFDM basics, synchronization, channel estimation,
peak-to-average power ratio reduction, and intercell interference mitigation
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ofdm最大似然估计 加入循环前缀 进行信道估计同步算法-ofdm Maximum Likelihood Estimation of cyclic prefix for channel estimation synchronization algorithm
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OFDM,802.11的残余相位补偿算法，用于分析非理想同步的情况-OFDM, 802.11 residual phase compensation algorithm for the analysis of non-ideal synchronization
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此程序为采样频率同步，专门用于OFDM接收部分，用于定时同步-This procedure for the sampling frequency synchronization, specifically for the OFDM receiving section is used for timing synchronization
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ofdm基本原理及同步技术的研究，利用CP相关性，对ML算法和迭代ML算法进行了仿真，通过误码率的变化观察频偏估计对于系统的影响。-The basic principles and research ofdm synchronization technology, the use of CP correlation algorithm for ML and ML iterative algorithm for the simulation, the estimated impact of the
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基于802.11a标准的相对完整的OFDM收发系统，包含了频率同步、符号同步、信道估计等关键模块，对初学者很有帮助-Based on the 802.11a standard OFDM transceiver relatively complete system, including the frequency synchronization, symbol synchronization, channel estimation and other key modules, useful for
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ofdm同步算法,用于多载波ofdm通信中提取相应的同步信息，便于以后的均衡处理。-ofdm synchronization algorithm for multi-carrier communication ofdm synchronization information extracted corresponding to facilitate subsequent equalization.
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Frequency Synchronization in OFDM System
An accurate frequency synchronization method using the zadoff-chu (ZC) constant envelop preamble is analyzed, and a new preamble weighted by pseudo-noise sequence is used for orthogonal frequency division mu
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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 carr
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In this letter, we propose a simple orthogonal
frequency-division multiplexing (OFDM) scheme for an asynchronous cooperative system, where OFDM is implemented at the source node, and time-reversion and complex conjugation are implemented at the rel
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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 ID
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this a simulation for OFDM synchronization
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主同步信号PSS在时域上的相关仿真，搭建OFDM通信系统的框架，到达过程是的泊松过程，外文资料里面的源代码，主要为数据分析和统计，MIMO OFDM matlab仿真。- PSS primary synchronization signal in the time domain simulation related, Build a framework OFDM communication system, Arrival process is a Poisson process, Foreign
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基于OFDM调制解调通信系统的频偏估计技术matlab程序，对于研究者具有非常重要的参考价值。-QPSK modulation and demodulation literature, including modulation and demodulation, shaping filter, matched filtering, carrier synchronization, bit synchronization and other key technologies. For engine
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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
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正交频分复用(OFDM)技术是一种可以有效对抗符号间干扰(ISI)的高速数据传输技术。OFDM是一种特殊的多载波调制方式，它的基本思想是将高速传输的数据流通过串/并转换，变成在若干个正交的窄带子信道上并行传输的低速数据流。OFDM接收机有三个关键技术：信道估计技术，降低峰均比(PAPR)技术和同步技术。OFDM技术能有效的对抗多径衰落等，有着诸多的优点，但是OFDM有一个发展瓶颈，即OFDM信号的峰均功率比很大，很容易导致OFDM信号的交调失真和系统性能的下降。因而如何降低OFDM信号的峰均功率
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6. 在三条径的瑞利信道中，对于OFDM：
(1) 请设计一种具体的导引辅助的信道估计方法，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) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，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。(6. In
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