Description: 利用Matlab编程模擬phase noise對OFDM signal的影響,希望供大家参考,Error vector magnitude (EVM) -simulation using Matlab programming phase noise of the impact of the OFDM signal hope that for your reference, Error vector magnitude (EVM) Platform: |
Size: 1024 |
Author:蔡宗軒 |
Hits:
Description: 一篇介绍OFDM系统受相位噪声和IQ不平衡影响分析不错的文章，被ICC2008录取-An OFDM system introduced by the phase noise and IQ imbalance impact analysis good articles, have been admitted ICC2008 Platform: |
Size: 239616 |
Author: |
Hits:
Description: Phase noise resulting in Common Phase Error
(CPE) and Inter-Carrier Interference (ICI) is a critical challenge
to the implementation of OFDM systems. Modeling phase noise
as a stationary Gaussian random process with the specified
power spectrum density, different from conventional approaches
which mostly relay on pilots to provide CPE estimation, we
explore the statistical characteristics of the sufficient statistics
then propose a pilot-aided decision-directed approach according
to maximum-likelihood criterion. Numerical results demonstrate
that the proposed algorithm enjoys 2dB gain at moderate SNR
and is quite robust against possible model mismatch Platform: |
Size: 148480 |
Author:xiaobo |
Hits:
Description: Phase noise resulting in Common Phase Error
(CPE) and Inter-Carrier Interference (ICI) is a critical challenge
to the implementation of OFDM systems. Modeling phase noise
as a stationary Gaussian random process with the specified
power spectrum density, different from conventional approaches
which mostly relay on pilots to provide CPE estimation, we
explore the statistical characteristics of the sufficient statistics
then propose a pilot-aided decision-directed approach according
to maximum-likelihood criterion. Numerical results demonstrate
that the proposed algorithm enjoys 2dB gain at Platform: |
Size: 84992 |
Author:xiaobo |
Hits:
Description: Phase noise resulting in Common Phase Error
(CPE) and Inter-Carrier Interference (ICI) is a critical challenge
to the implementation of OFDM systems. Modeling phase noise
as a stationary Gaussian random process with the specified
power spectrum density, different from conventional approaches
which mostly relay on pilots to provide CPE estimation, we
explore the statistical characteristics of the sufficient statistics
then propose a pilot-aided decision-directed approach according
to maximum-likelihood criterion. Numerical results demonstrate
that the proposed algorithm enjoys 2dB gain at moderate SNR
and is quite robust against possible model mismatch Platform: |
Size: 6144 |
Author:xiaobo |
Hits:
Description: 分析了相位噪声对正交频分复用(OFDM)系统的影响,发现相位噪声不仅产生
通用相角错误(CPE),而且还会产生载波间干扰(ICI),这都使OFDM系统的性能急剧恶
化,因此必须对CPE和ICI进行校正.文中给出了基于MSE准则的CPE校正方法,考虑到
ICI干扰主要来源于相邻信道,进而提出了基于LMS法则的自适应相邻信道干扰消除方
法.整个算法简单高效.仿真结果表明,所提出的算法大大改善了OFDM系统的性能-Analysis of phase noise on the orthogonal frequency division multiplexing (OFDM) system, the impact of phase noise was found not only from the general phase angle error (CPE), but also generate inter-carrier interference (ICI), which are so dramatically the performance of OFDM system worse, it is necessary CPE and ICI correction. This paper gives guidelines for CPE-based MSE correction methods, taking into account ICI mainly come from the adjacent channel interference, then presents a rule-based LMS adaptive adjacent channel interference cancellation method. the algorithm is simple and efficient. The simulation results show that the proposed algorithm greatly improved the performance of OFDM systems Platform: |
Size: 44032 |
Author:sunkai |
Hits:
Description: This is a file for Blind frequency offset
estimation for overlap PCC-OFDM systems
in presence of phase noise Platform: |
Size: 681984 |
Author:katha |
Hits:
Description: OFDM中的信道均衡技术对于研究如何消除噪声干扰以及去除相位偏移的有着重要的作用-OFDM channel equalization techniques in the study of how to eliminate noise and to remove the phase offset has an important role in Platform: |
Size: 1368064 |
Author:闫城 |
Hits:
Description: 根据OFDM的时频特性,提出了一种新的空间测距方法.首先在时域对OFDM信号进行相关处
理,得到距离的粗估计,在粗估计的基础上,利用OFDM不同子载波数据之间的相位差,得到距离的精
确估计,根据精确估计的结果对粗估计的结果进行校正,从而得到最终的距离估计值.仿真结果表明,该
方法的测距精度比采用延迟锁定环的伪码测距方法至少提高了4倍,并且在信噪比大于20 dB时,可以
达到厘米级.
-According to the properties of OFDM in the time and frequency domains, a novel ranging
method in space is proposed. The coarse estimation of range can be obtained from the correlation of the
waveforms of OFDM signals in the time domain, and the fine estimation is obtained from the phase
differences between the sub-carriers in the frequency domain. The fine estimation is then adopted to
correct the coarse estimation, and the final estimation of range is achieved. Simulation results show that
the ranging accuracy of the proposed method is more than 4 times better than that of pseudo-code
ranging. Furthermore, the ranging accuracy is close to the centimeter level when the signal-to-noise ratio
is beyond 20 dB.
Platform: |
Size: 56320 |
Author:wangmingxiao |
Hits:
Description: WIMAX_WZ_withencoding:信道估计，相位噪声补偿，频偏估计，编解码都有
WIMAX_WZ_withoutencoding：在上面的工程基础上，去掉编解码部分
WIMAX_WZ_withoutprocessing：在上面的工程基础上，再去掉相位噪声补偿，频偏估计
WIMAX_WZ_withoutprocessing2：在上面的工程基础上，改用新的前导和导频联合信道估计方案,参考文档《基于802_16d标准的OFDM信道估计技术的研究与实现.kdh》
因为白噪声信道仿真只能体现QPSK调制和RS-CC编码的性能，需要仿真SNR可控的SUI信道，来估计信道均衡的性能。
在多普勒频偏fd>100Hz时，联合信道估计性能才比前导估计强，否则前导估计性能更优。对于600MHz中心频率，要求收发机相对运动速度大于180km/h，这种情况出现的概率不大-WIMAX_WZ_withencoding: channel estimation, phase noise compensation, frequency estimation, the codec has WIMAX_WZ_withoutencoding: the project on the basis of the above, remove the codec section WIMAX_WZ_withoutprocessing: the project on the basis of the above, then remove the phase noise compensation, offset estimation WIMAX_WZ_withoutprocessing2: In the project on the basis of the above, use the new leader and pilot joint channel estimation scheme, the document " Standards-based 802_16d OFDM channel estimation and implementation of technology .kdh" because white noise channel simulation only reflects the QPSK modulation and RS-CC coding performance requires simulation SNR controllable SUI channel, to estimate the performance of channel equalization. When Doppler shift fd> 100Hz, joint channel estimation performance was stronger than the leading estimate, otherwise better estimation performance leader. For 600MHz center frequency transceiver requirements relative velocity Platform: |
Size: 40960 |
Author:陈茂 |
Hits:
Description: LTE论文（Channel Estimation, Carrier Recovery, and Data Detection in the Presence of Phase Noise in OFDM Relay Systems）-Channel Estimation, Carrier Recovery, and Data Detection in the Presence of Phase Noise in OFDM Relay Systems Platform: |
Size: 490496 |
Author:xiaozhang |
Hits:
Description: < Channel, Phase Noise, and Frequency Offset in OFDM Systems Joint Estimation, Data Detection, and Hybrid Cramer-Rao Lower Bound>>-Channel, Phase Noise, and Frequency Offset in OFDM Systems Joint Estimation, Data Detection, and Hybrid Cramer-Rao Lower Bound Platform: |
Size: 479232 |
Author:wang |
Hits:
Description: 三相光伏逆变并网的仿真，自己编的5种调制信号，现代信号处理中谱估计在matlab中的使用，MIMO OFDM matlab仿真,一个很有用的程序，旋转机械二维全息谱计算，包括调制，解调，信噪比计算，是机器学习的例程。- Three-phase photovoltaic inverter and network simulation, Own five modulation signal, Modern signal processing used in the spectral estimation in matlab, MIMO OFDM matlab simulation, A very useful program, Rotating machinery 2-d holographic spectrum calculation, Includes the modulation, demodulation, signal to noise ratio calculation, Machine learning routines. Platform: |
Size: 7168 |
Author:hagnasduc |
Hits:
Description: Phase Noise Influence in Optical OFDM Systems employing RF Pilot Tone for Phase Noise Cancellation Platform: |
Size: 90112 |
Author:wang |
Hits:
Description: 程序包含调制解调两部分，需结合optisystem软件运行，是基于数据反馈的相位噪声估计算法，适用于光OFDM系统。(The program consists of two parts, modulation and demodulation. It needs to run in conjunction with optisystem software. It is a phase noise estimation algorithm based on data feedback, and it is suitable for optical OFDM system.) Platform: |
Size: 3072 |
Author:adspvg |
Hits:
Search - phase noise in ofdm