Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Liang Xuwen is active.

Publication


Featured researches published by Liang Xuwen.


ieee international symposium on microwave, antenna, propagation and emc technologies for wireless communications | 2007

QPSK/OQPSK Signal Detection with IF AGC on LEO Satellite

Chen Xiaoting; Zhao Guodong; Jin Ping; Gong Wenbin; Liu Huijie; Liang Xuwen

The effect of IF (intermediate frequency) analog AGC on QPSK/OQPSK signal detection is evaluated for LEO satellite system where Doppler drift, large dynamic range of signal power and low Eb/No condition are difficult to deal with. The way of setting reference value of logarithmic power based AGC is discussed. Coherent accumulation and non-coherent accumulation are used for detecting, while signals PDF and performance vs. accumulation times are derived mathematically. Experiment shows that with 60 KHz Doppler offset, Eb/No=0dB under QPSK/OQPSK, only 16 bits was consumed to detect the signal with 99.9% detection probability and 0.1% false alarm probability.


international conference on wireless communications, networking and mobile computing | 2008

An Improved Frequency Estimator for Synchronization of PSK Signals with Large Frequency Offset

Shuai Tao; Liu Huijie; Chen Xiaoting; Liang Xuwen; Zhao Guodong


Archive | 2015

Pilot frequency information and satellite ephemeris joint Doppler frequency shift estimation and compensation method

Hou Huiling; Liang Xuwen; Ding Sheng; Chen Yijun; Wu Kang


Chinese Journal of Aeronautics | 2016

Orbital reference frame estimation with power spectral density constraints for drag-free satellites

Yonghe Zhang; Yamin Wang; Mao Qingyun; Liang Xuwen


Archive | 2015

Accurate uplink quasi-synchronization time measurement method for low-earth-orbit satellite communication

Chen Yijun; Liang Xuwen; Ding Sheng; Wu Kang; Hou Huiling


Archive | 2015

Earth synchronous orbit satellite communication access system

Liang Xuwen; Ding Sheng; Zhang Chuansheng; Wang Yang; Ma Lu; Hu Weisheng


Journal of Astronautics | 2010

An Frequency Estimator for Large Frequency Offset and Low SNR Signals

Liang Xuwen


international conference on wireless communications, networking and mobile computing | 2008

LEO Satellite Scheduler Model and Simulation

Zeng Yuan; Gong Wenbin; Liu Huijie; Liang Xuwen


Zhongguo Hangkong Xuebao(Yingwenban) | 2016

抗力のない人工衛星のためのパワースペクトル密度制約のある軌道参照フレーム推定【Powered by NICT】

Zhang Yonghe; Wang Yamin; Mao Qingyun; Liang Xuwen


Archive | 2015

Geosynchronous orbit satellite communication access system and access method

Liang Xuwen; Ding Sheng; Zhang Chuansheng; Wang Yang; Ma Lu; Hu Weisheng

Collaboration


Dive into the Liang Xuwen's collaboration.

Top Co-Authors

Avatar

Ding Sheng

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Liu Huijie

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Gong Wenbin

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Chen Xiaoting

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Zhao Guodong

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Jin Ping

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Shuai Tao

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Yonghe Zhang

Chinese Academy of Sciences

View shared research outputs
Top Co-Authors

Avatar

Zeng Yuan

Chinese Academy of Sciences

View shared research outputs
Researchain Logo
Decentralizing Knowledge