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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)
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Size: 1024 |
Author: 蔡宗軒 |
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Description: A system simulation environment in Matlab/Simulink of RFID is constructed in this paper.
Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system
model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment,
AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by
changing the coding method,parameters of building blocks,and operation distance.Finally,some
simulation results are presented in this paper.
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Size: 2099200 |
Author: liulang |
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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
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Size: 239616 |
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Description: 小数分频技术解决了锁相环频率合成器中的频率分辨率和转换时间的矛盾, 但是却引入了严重的相位噪声,
传统的相位补偿方法由于对Aö D 等数字器件的要求很高并具有滞后性实现难度较大。$2 调制器对噪声具有整形的功
能, 因而将多阶的$2 调制器用于小数分频合成器中可以很好地解决他的相位噪声的问题, 大大促进了小数分频技术的
发展和应用。文章最后给出了在GHz 量级上实现的这种新型小数分频合成器的应用电路, 并测得良好的相噪性能。-Fractional-N technology to solve the PLL frequency synthesizer in the frequency resolution and conversion time of contradictions, but the introduction of a serious phase noise, the traditional method of phase compensation A? D because of the number of devices, such as demanding and have the lag is more difficult to achieve. $ 2 modulator with noise shaping function, and thus will be more than the $ 2-order modulator for fractional-N synthesizer can be a good solution to his problem of phase noise, contributed significantly to the fractional-N technology development and applications. Finally, the article in the GHz order to achieve this new fractional-N synthesizer of the application circuit, and measured a good phase noise performance.
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Size: 286720 |
Author: 朱成发 |
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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
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Size: 148480 |
Author: xiaobo |
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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
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Size: 84992 |
Author: xiaobo |
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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
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Size: 6144 |
Author: xiaobo |
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Description: 增加相噪的程序，可以把测量结果转化为相为噪声，使用非常方便。-The program to add phase noise, the measurement results can be translated into phase noise, very convenient to use.
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Size: 3072 |
Author: shan |
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Description: matlab对PLL环路相位噪声的仿真m文件-simulation of PLL loop phase noise
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Size: 1024 |
Author: chenmy |
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Description: PLL相位噪声仿真方法总结,用来说明对各个模块相位噪声仿真的方法-PLL phase noise simulation document
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Size: 52224 |
Author: chenmy |
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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
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Size: 44032 |
Author: sunkai |
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Description: phase noise effect in matlab simulink
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Size: 8192 |
Author: Shahid Manzoor |
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Description: 三篇经典的关于ofdm相位噪声抑制的外文资料，是大师的作品，很有参考价值，我考过好几次，受益匪浅。-Three classical phase noise suppression on ofdm foreign materials, is the master work, a good reference, I test several times and benefit.
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Size: 624640 |
Author: lizongwei |
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Description: 通过信号星座图来比较PSK和PAM对相位噪声的敏感程度-By PSK signal constellation diagram to compare and PAM on the sensitivity of phase noise
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Size: 429056 |
Author: 王晓东 |
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Description: 相噪对EVM等指标的影响研究，用于设计系统指标和射频参数。-Phase noise on the EVM and other indicators of impact studies, indicators and radio frequency used to design the system parameters.
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Size: 69632 |
Author: 曹艳平 |
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Description: An inductive feedback technique increases the speed
of resonant circuits by 62 , allowing operation near the of
transistors. The technique leads to a fundamental oscillator operating
at 128 GHz with a power dissipation of 9 mW and a phase
noise of 105 dBc/Hz at 10-MHz offset. A divide-by-two circuit
based on the idea and incorporating a sampling mixer achieves a
maximum speed of 125 GHz while consuming 10.5 mW. The prototypes
have been fabricated in 90-nm CMOS technology.-An inductive feedback technique increases the speed of resonant circuits by 62 , allowing operation near the of transistors. The technique leads to a fundamental oscillator operating at 128 GHz with a power dissipation of 9 mW and a phase noise of 105 dBc/Hz at 10-MHz offset. A divide-by-two circuit based on the idea and incorporating a sampling mixer achieves a maximum speed of 125 GHz while consuming 10.5 mW. The prototypes have been fabricated in 90-nm CMOS technology.
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Size: 1960960 |
Author: 吕凌 |
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Description: 该程序是一个振荡相位噪声模型。相位噪声是衡量频率标准源(高稳晶振、原子频标等)频稳质量的重要指标，随着频标源性能的不断改善，相应噪声量值越来越小，因而对相位噪声谱的测量要求也越来越高。-The program is a model of phase noise oscillator. Phase noise is a measure of frequency standard source (high stability crystal oscillator, atomic frequency standard, etc.) an important indicator of the quality of the frequency stability, with the frequency standard source performance continues to improve, the corresponding noise value smaller, and thus the phase noise spectrum of the measurement requirements higher and higher.
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Size: 3072 |
Author: 小一 |
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Description: 能够完成低相噪、低杂波数字锁相环路滤波器-Low phase noise, low clutter digital phase-locked loop filter design
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Size: 774144 |
Author: 郑晔桦 |
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Description: 相位噪声的维纳建模，这是一个添加相位噪声的子程序-Wiener phase noise model, which is a subroutine to adding phase noise
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Size: 1024 |
Author: |
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Description: 专业的分析锁相环相位噪声，射频电路或相关专业人士使用。-phase noise
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Size: 5076992 |
Author: liyy |
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