Description: 此为频偏校正程序,通过TD_GG算法得到的频偏值还存在几赫兹的残余频偏，这里，我们可以通过反馈算法进行校正，以得到更加精确的频偏值。-for this frequency offset correction procedure for the adoption of the algorithm TD_GG Frequency values still exist remnants of a few hertz frequency offset, here, we can pass feedback correction algorithm, to be more precise frequency offset value. Platform: |
Size: 8870 |
Author:张凯飞 |
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Description: The implementation of estimation and correction of carrier frequency offset of COFDM system in DAB receiver IC ASIC03 Platform: |
Size: 186637 |
Author:Aries |
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Description: This paper is\" a technique for orthogonal frequency division multiplexing frequency offset correction which wrote by H.Moose Platform: |
Size: 621016 |
Author:Tony |
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Description: 此为频偏校正程序,通过TD_GG算法得到的频偏值还存在几赫兹的残余频偏，这里，我们可以通过反馈算法进行校正，以得到更加精确的频偏值。-for this frequency offset correction procedure for the adoption of the algorithm TD_GG Frequency values still exist remnants of a few hertz frequency offset, here, we can pass feedback correction algorithm, to be more precise frequency offset value. Platform: |
Size: 8192 |
Author:张凯飞 |
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Description: OFDM信号的频偏校正程序，用于估计子带上的频率偏移。-OFDM signals in frequency offset correction procedure used to estimate the sub-band frequency deviation. Platform: |
Size: 7168 |
Author:dengyongma |
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Description: The implementation of estimation and correction of carrier frequency offset of COFDM system in DAB receiver IC ASIC03 Platform: |
Size: 186368 |
Author:Aries |
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Description: This paper is" a technique for orthogonal frequency division multiplexing frequency offset correction which wrote by H.Moose Platform: |
Size: 620544 |
Author:Tony |
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Description: 本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method. Platform: |
Size: 268288 |
Author:dajinyu |
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Description: Script for performance measurements for Carrier and Sampling Frequency
Offset Correction in OFDM Systems Platform: |
Size: 1024 |
Author:Ali |
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Description: In this paper, a novel demodulation structure in
high-frequency (HF) channel is introduced and studied.Frequency-offset estimation, ractionally spaced adaptive equalization and carrier recovery techniques are involved.Frequency-offset correction is carried out based on channel impulse response estimation. ractionally spaced adaptive equalization and carrier recovery are combined with nonlinear decision feedback loop structure and the initial value
of tap coefficients of equalization are obtained from the previous channel estimation. Simulation is conducted under channel parameters with respect to MIL-STD-188-110B using a Monte Carlo technique. The results show this novel demodulation structure is feasible and efficient in HF channel, the symbol error ratio can reach to 10− 3 in 12dB SNR.-In this paper, a novel demodulation structure in
high-frequency (HF) channel is introduced and studied.Frequency-offset estimation, ractionally spaced adaptive equalization and carrier recovery techniques are involved.Frequency-offset correction is carried out based on channel impulse response estimation. ractionally spaced adaptive equalization and carrier recovery are combined with nonlinear decision feedback loop structure and the initial value
of tap coefficients of equalization are obtained from the previous channel estimation. Simulation is conducted under channel parameters with respect to MIL-STD-188-110B using a Monte Carlo technique. The results show this novel demodulation structure is feasible and efficient in HF channel, the symbol error ratio can reach to 10− 3 in 12dB SNR. Platform: |
Size: 186368 |
Author:Lin |
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Description: it is IEEE research paper on "The Implementation of Estimation and
Correction of Carrier Frequency Offset of
COFDM system in DAB Receiver"-it is IEEE research paper on "The Implementation of Estimation and
Correction of Carrier Frequency Offset of
COFDM system in DAB Receiver",, Platform: |
Size: 186368 |
Author:ashish |
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Description: Altem公司quartus
II 8．1开发环境下，完成了中频全数字解调器的FPGA实现，并对数
字下变频、载波同步、位同步等解调器的核心模块设计进行了详细的分析和说明，给出
了实现框图和仿真波形。同时在本设计中应用了Altera公司的NiosII软核处理器技术，
用于载波的大频偏校正和解调器各个部分的监测和控制。最后给出了QPSK中频全数字
解调器关键性能指标的测试方法和测试结果，测试结果表明本设计达到了预期的性能指
标要求。-The Algorithm is converted to HDL description for FPGA realization．The designs of the core Modules of demodulator, including digital down-conversion，carrier ring，bit synchronization loop design, are described in detail．And a block diagram and simulated waveforms are provide in the latter part．Also the soft-core processor technology of Altera’s NiosII is applied in the design for carrier frequency offset correction and the monitoring and control of the separate parts of demodulator．Finally, the test methods and results of key performance indicators of the IF Demodulator QPSK are given to show that the design given in this paper can reach the performance requirements expected. Platform: |
Size: 4328448 |
Author:zhuimeng |
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Description: 频率同步是宽带OFDM系统中的关键技术，IEEE 802.11a 采用OFDM技术，利用其前导序列的重复结构，提出了一种分步的粗细频偏捕获与校正算法，同时为了补偿时域同步后的残余相差和适应信道的时变特性，还提出了一种基于频域导频的相位跟踪方案-Frequency synchronization is a key technology in the broadband OFDM systems, IEEE 802.11a uses OFDM technology, the use of the repetitive structure of the leader sequence, the thickness of a step frequency offset capture and correction algorithm, when the order to compensate at the same time domain synchronous residualthe difference between and adapt to the time-varying characteristics of the channel is also proposed based on frequency domain pilot phase tracking scheme Platform: |
Size: 858112 |
Author:Chaos |
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Description: 假设截获了一段短波数字通信的信号，要求解调出最终的信息，每组解调出来后，将10组信息组合起来，恢复最终的信源输出数据。
先验信息：两组数据文件，编号为1、2，每组I、Q两路存放，格式为“int16”，采样率为9600Sa/s，其中第一组为单径情况，第二组为多径情况。
参数符合MIL-STD-188-110A标准；
同步序列为syn=seq.dat，BPSK调制；
接收机频率稳定度高于1e-6。
文件中有效信息总长度为333.75s，其中同步头长为5/12s，每时隙1/6s，训练序列占10 ，在数据之前；
交织方式为全交织，矩阵交织，列为1000，在比特级进行；
纠错码码率为1/2；
调制方式为BPSK、QPSK和8PSK中的一种，映射方式为二进制，BPSK相位偏移为0，其余两种为 。
-Suppose intercepted signal for a period of short-wave digital communications requires final demodulated information after each demodulated, combining 10 group information, to restore the final output data source.
Priori information: two sets of data file, numbered 1, 2, each I, Q two-way storage, the format is int16 , sampling rate 9600Sa/s, where the first group is a single path, the second group multipath situation.
Parameters meet MIL-STD-188-110A standard
Synchronization sequence syn = seq.dat, BPSK modulation
The frequency stability of the receiver is higher than 1e-6.
File payload total length of 333.75s, wherein the synchronization header length is 5/12s, each time slot 1/6s, accounting for 10 of the training sequence, before the data
Interleaving for the whole interleaving matrix interleaving, as 1000, carried out at the bit level
Error correction code rate of 1/2
The modulation scheme is BPSK, QPSK and 8PSK one, a binary mapping, the BPSK phase offset is 0, the Platform: |
Size: 4096 |
Author:suxiaogua |
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Description: 此为频偏校正程序,通过TD_GG算法得到的频偏值还存在几赫兹的残余频偏-The program for the deviation correction, deviation value is obtained by TD_GG algorithm also has a few Hertz residual frequency offset Platform: |
Size: 4096 |
Author:ilgjph |
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Description: 此为频偏校正程序,通过TD_GG算法得到的频偏值还存在几赫兹的残余频偏(The program for the deviation correction, deviation value is obtained by TD_GG algorithm also has a few Hertz residual frequency offset) Platform: |
Size: 4096 |
Author:PHE%26075521
|
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