浏览全部资源
扫码关注微信
1. 青海民族大学物理与电子信息工程学院 西宁 810007
2. 中国科学院上海微系统与信息技术研究所 上海 201899
[ "贾国庆,男,博士,青海民族大学物理与电子信息工程学院院长助理、副教授,主要研究方向为MIMO-OFDM系统物理层关键技术、算法以及3GPP标准化研究。" ]
[ "陈善继,男,青海民族大学物理与电子信息工程学院院长、教授,主要研究方向为智能信号处理、物联网研究及应用。" ]
[ "陈超,男,青海民族大学物理与电子信息工程学院副教授,主要研究方向为信号处理与物联网技术。" ]
[ "纪小红,女,青海民族大学物理与电子信息工程学院助教,主要研究方向为 3GPP标准化。" ]
[ "房卫东,男,博士,中国科学院上海微系统与信息技术研究所高级工程师,主要研究方向为无线传感器网络可信传输、无线传输性能测试。" ]
网络出版日期:2015-08,
纸质出版日期:2015-08-20
移动端阅览
贾国庆, 陈善继, 陈超, 等. 一种LTE-Advanced系统频偏估计中的极性翻转消除方法[J]. 电信科学, 2015,31(8):58-62.
Guoqing Jia, Shanji Chen, Chao Chen, et al. A Polarity Reversion Elimination Method for LTE-Advanced Frequency Offset Estimation[J]. Telecommunications science, 2015, 31(8): 58-62.
贾国庆, 陈善继, 陈超, 等. 一种LTE-Advanced系统频偏估计中的极性翻转消除方法[J]. 电信科学, 2015,31(8):58-62. DOI: 10.11959/j.issn.1000-0801.2015204.
Guoqing Jia, Shanji Chen, Chao Chen, et al. A Polarity Reversion Elimination Method for LTE-Advanced Frequency Offset Estimation[J]. Telecommunications science, 2015, 31(8): 58-62. DOI: 10.11959/j.issn.1000-0801.2015204.
在分数倍频偏(fractional frequency offset,FFO)估计中,噪声和信道衰落的影响可能会导致FFO估计结果的极性翻转,使得FFO估计精度大大降低,OFDM系统的同步性能不可避免地恶化。针对LTE-Advanced系统,设计了一种有效的利用主同步信号(primary synchronization signal,PSS)的镜像对称特性的FFO 极性估计算法,联合基于CP的FFO绝对值估计方法,给出了一种高精度的FFO估计方法。仿真结果表明,所提方法能有效地降低FFO估计精度翻转的问题,保证了同步性能。
Traditional fractional frequency offset(FFO)estimation algorithm pay less attention to FFO polarity estimation.Noise and channel fading induced FFO estimation polarity reversion degrades the frequency synchronization performance inevitably.An efficient FFO polarity detection method was proposed in LTE-Advanced system to solve the problem,which utilized the mirror symmetry property of time-domain primary synchronization signal(PSS).Numerical results show that the proposed method can depress FFO polarity reversion efficiently.
Woseyila A B , Kasparis C , Evans B G . Robust time-domain timing and frequency synchronization for OFDM systems . IEEE Transactions on Consumer Electronics , 2009 , 55 ( 2 ): 391 ~ 399
Myung J S . A frequency synchronization method for 3GPP LTE OFDMA system in TDD mode . Proceedings of the 9th International Conference on Communications and Information Technologies , Incheon,Korea , 2009
Qi W , Chritian M . Carrier frequency synchronization in the downlink of 3GPP LTE . Proceedings of the 21st Annual International Symposium on Personal,Indoor and Mobile Radio Communications , Istanbul,Turkey , 2010
Konstantinos M , David M G E , Volker J . A closed concept for synchronization and cell search in 3GPP LTE systems . Proceedings of Wireless Communications and Networking Conference , Budapest,Spain , 2009
Tsai Y M , Zhang G D . Estimation of integer carrier frequency offset in OFDM systems based on the maximum likelihood principle . IEEE Transactions on Broadcasting , 2009 , 55 ( 1 ): 95 ~ 108
Wang Q , Mehlfuhrer C , Rupp M . SNR optimized residual frequency offset compensation for WiMAX with throughput evaluation . Proceedings of the 17th European Signal Processing Conference , Glasgow,Scotland , 2009
Athaudage C R N , Sathananthan K . Cramer-rao lower bound on frequency offset estimation error in OFDM systems with timing error feedback compensation . Proceedings of the 5th International Conference on Information,Communications and Signal Processing , Bangkok,Thailand , 2005
Minn H , Bhargava V K , Letaief K B . A robust timing and frequency synchronization for OFDM systems . IEEE Transactions on Wireless Communications , 2004 , 2 ( 4 ): 822 ~ 829
Minn H , Bhargava V K , Letaief K B . A combined timing and frequency synchronization and channel estimation for OFDM . IEEE Transactions on Communications , 2006 , 54 ( 3 ): 416 ~ 422
Tsai Y M , Zhang G D . Time and frequency synchronization for 3GPP long term evolution systems . Proceedings of the IEEE 65th Vehicular Technology Conference , Dublin,Ireland , 2007
3GPP TS36-211(v10.1.0).Physical Channels and Modulation , 2011
0
浏览量
486
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构