scholarly journals Common phase error estimation in coherent optical OFDM systems using best-fit bounding box

2016 ◽  
Vol 24 (21) ◽  
pp. 23707 ◽  
Author(s):  
Tianwai Bo ◽  
Chun-Kit Chan
Keyword(s):  
Error Estimation ◽  
Phase Error ◽  
Ofdm Systems ◽  
Bounding Box ◽  
Optical Ofdm ◽  
Best Fit

scholarly journals Projection Histogram-Assisted Estimation of Common Phase Error in Coherent Optical OFDM Systems

2019 ◽  
Vol 11 (3) ◽  
pp. 1-9 ◽  
Author(s):  
Zhengxuan Li ◽  
Yun Li ◽  
Junjie Ma ◽  
Jian Chen ◽  
Yingxiong Song ◽  
...  
Keyword(s):  
Phase Error ◽  
Ofdm Systems ◽  
Optical Ofdm

Error estimation and bias correction in phase-improvement calculations

1999 ◽  
Vol 55 (9) ◽  
pp. 1555-1567 ◽  
Author(s):  
Kevin Cowtan
Keyword(s):  
Error Estimates ◽  
Error Estimation ◽  
Bayesian Methods ◽  
Bias Correction ◽  
Phase Error ◽  
Acta Cryst

With the rise of Bayesian methods in crystallography, the error estimates attached to estimated phases are becoming as important as the phase estimates themselves. Phase improvement by density modification can cause problems in this environment because the quality of the resulting phases is usually overestimated. This problem is addressed by an extension of the γ correction [Abrahams (1997). Acta Cryst. D53, 371–376] to arbitrary density-modification techniques. The degree to which the improved phases are biased by the features of the initial map is investigated in order to determine the limits of the resulting procedure and the quality of the phase-error estimates.

An Adaptive Phase Tracking Scheme of OFDM Wireless Communication System

2013 ◽  
Vol 336-338 ◽  
pp. 1798-1803
Author(s):  
Qian Du ◽  
Wen Wu Xie
Keyword(s):  
Kalman Filter ◽  
Wireless Communication ◽  
Channel Estimation ◽  
Error Estimation ◽  
Communication System ◽  
Phase Error ◽  
Basic Structure ◽  
Adaptive Kalman Filter ◽  
Phase Tracking ◽  
New Phase

This paper proposes a new phase tracking algorithm for the 802.11a system. Since this system illuminates the basic structure of 802.11a system, and introduces the OFDM frame generation principle based the transmitter, phase error estimation and channel estimation. On the basis of this, this paper presents a phase tracking scheme based on adaptive Kalman filter, and then simulates the process based on 802.11a system. The result indicates that the BER has been improved because of this adaptive phase tracking scheme.

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