浏览全部资源
扫码关注微信
宽带SC-FDE系统低复杂度二维信道估计算法
Low Complexity Two-Dimensional Channel Estimation Algorithm for Broadband SC-FDE System
- 电信科学 2014年30卷第8期 页码：93-98
- 作者机构：
- 作者简介：
[ "邹奇峰，男，哈尔滨工业大学电子与信息工程学院博士生，主要研究方向为宽带无线通信、信道估计与均衡。" ]
[ "谭学治，男，哈尔滨工业大学电子与信息工程学院通信技术研究所副所长、教授、博士生导师，主要研究方向为移动通信系统、无线网络及传输、专用无线通信系统、认知无线电。" ]
[ "刘梅，女，哈尔滨工业大学电子与信息工程学院教授、博士生导师，主要研究方向为阵列信号处理、多传感器数据融合、空间通信技术。" ]
[ "迟永刚，男，哈尔滨工业大学电子与信息工程学院副教授、硕士生导师，主要研究方向为扩展频谱通信理论、通信对抗理论、卫星导航定位理论与应用。" ]
- 基金信息：国家自然科学基金委员会与中国民用航空局联合资助项目(61071104);国家科技重大专项“宽带多媒体集群系统技术验证（中速模式）”基金资助项目(2011ZX03004-004);通信网信息传输与分发技术重点实验室开放课题(ITD-U10006)
DOI：10.3969/j.issn.1000-0801.2014.08.015
中图分类号：-
网络出版日期：2014-08，
纸质出版日期：2014-08-15
- 稿件说明：
移动端阅览
邹奇峰, 谭学治, 刘梅, 等. 宽带SC-FDE系统低复杂度二维信道估计算法[J]. 电信科学, 2014,30(8):93-98.
Qifeng Zou, Xuezhi Tan, Mei Liu, et al. Low Complexity Two-Dimensional Channel Estimation Algorithm for Broadband SC-FDE System[J]. Telecommunications science, 2014, 30(8): 93-98.
邹奇峰, 谭学治, 刘梅, 等. 宽带SC-FDE系统低复杂度二维信道估计算法[J]. 电信科学, 2014,30(8):93-98. DOI： 10.3969/j.issn.1000-0801.2014.08.015.
Qifeng Zou, Xuezhi Tan, Mei Liu, et al. Low Complexity Two-Dimensional Channel Estimation Algorithm for Broadband SC-FDE System[J]. Telecommunications science, 2014, 30(8): 93-98. DOI： 10.3969/j.issn.1000-0801.2014.08.015.
摘要
单载波频域均衡系统因具有峰均比低、适用于高速率传输的优势，具有广泛的应用前景，同时对其信道估计性能也提出了一定的要求。针对传统一维MMSE估计算法性能较差，而二维算法运算复杂度又较高的问题，依据信道的时频分离特性提出了一种低复杂度二维MMSE信道估计算法。将二维估计转化为两个一维估计，再通过改进的SVD 算法减小一维估计的复杂度，并通过在帧结构插入特殊字（UW）序列作为循环前缀来减小系统开销，进行噪声方差估计。理论分析及仿真结果表明，本文算法比传统的LS及MMSE信道估计算法在未编码系统及编码系统中的性能都更好，且运算复杂度比传统一维MMSE算法更低。
Abstract
Single carrier frequency domain equalization（SC-FDE）is widely recognized as an very promising technique for its lower peak-to-average power ratio
but it also needs more accurate channel estimation method. A low complexity two-dimensional MMSE channel estimation algorithm based on time-frequency domain separation feature of channel was proposed in order to improve estimation performance and predigest the complexity. The two-dimensional MMSE estimation can be simplified as two one-dimensional MMSE and the SVD algorithm was used to reduce the complexity of one-dimensional estimation. The UW as the cyclic prefix could reduce the overhead of system. Noise variance was also estimated at the UW. The simulation results show that the proposed algorithm has better performance than the conventional LS algorithm and MMSE algorithm. The complexity of the proposed algorithm was also lower than the conventional one-dimensional MMSE method.
关键词
Keywords
references
Falconer D , Ariyavisitakul S L , Seeyar B , et al . Frequency domain equalization for single-carrier broadband wireless systems . IEEE Communications Magazine , 2002 , 40 ( 4 ): 58 ～ 66
Mehana A H , Nosratinia A . Single-carrier frequency-domain equalizer with multi-antenna transmit diversity . IEEE Transactions on Wireless Communications , 2013 , 12 ( 1 ): 388 ～ 397
Li J , Du Y , Liu Y . Comparison of spectral efficiency for OFDM and SC-FDE under IEEE 802.16 scenarios . Proceedings of the 11th IEEE Symposium on Computers and Communications ， Cagliari, Italy ， 2006 : 467 ～ 471
Hasegawa F , Okazaki A , Kubo H . Novel PAPR reduction scheme for SC-OFDM with frequency domain multiplexed pilots . IEEE Communications Letters , 2012 , 16 ( 9 ): 1345 ～ 1348
Silva J , Dinis R , Souto N . Single-carrier frequency domain equalisation with hierarchical constellations: an efficient transmission technique for broadcast and multicast systems . IEEE Communications Letters , 2012 , 6 ( 6 ): 2065 ～ 2073
Dinis R , Lam C T , Falconer D . Joint frequency-domain equalization and channel estimation using superimposed pilots . IEEE Wireless Communications ＆ ； Networking Conference ， Las Vegas, Nevada, USA ， 2008 ： 447 ～ 452
Lam C T , Falconer D , Danilo-Lemoine F , et al . Channel estimation for SC-FDE systems using frequency domain multiplexed pilots . Proceedings of IEEE 64th Vehicular Technology Conference ， Montreal ， 2006 : 1438 ～ 1442
Zheng Y R , Xiao C . Channel estimation for frequency-domain equalization of single-carrier broadband wireless communications . IEEE Transactions on Vehicular Technology , 2009 , 58 ( 2 ): 815 ～ 823
Hoeher P , Kaiser S , Robertson P . Pilot-symbol-aided channel estimation in time and frequency.IEEE Global Telecommunications Conference , Communication Theory Mini Conference ， USA ， 1997 : 90 ～ 96
Morelli M , Sanguinetti L , Mengali U . Channel estimation for adaptive frequency-domain equalization . IEEE Transactions on Wireless Communications , 2005 , 4 ( 9 ): 2508 ～ 2518
Edfors O , Sandell M , Beek J J . OFDM channel estimation by singual value decomposition . IEEE Transactions on Wireless Communications , 1998 , 46 ( 7 ): 931 ～ 939
Todros K , Tabrikian J . Fast approximate joint diagonalization of positive definite Hermitian matrices . Acoustics, Speech and Signal Process , 2007 , 3 ( 4 ): 1373 ～ 1376
Baig S . Frequency domain channel equalization using circulant channel matrix diagonalization . Proceedings of the 2005 International Multitopic Conference ， Hong Kong, China ， 2005 : 1 ～ 5
0
浏览量
724
下载量
0
CSCD
- 网络PDF下载
- XML下载
- Meta-XML下载
- BibTeX下载
- Endnote下载
- RefMan 下载
- NoteExpress下载
- NoteFirst下载
关联资源
相关文章
相关作者
相关机构
- 技术支持由北京北大方正电子有限公司提供 京ICP备09064830号-19
京公网安备11010802024621 - 本系统建议在Chrome、 IE9+ 以上版本浏览器阅读本站内容，360浏览器请切换至极速模式
- Cookies帮助我们提供服务并提供个性化体验。使用本网站，即表示您同意我们使用Cookies
- 总访问量：69943 今日访问量：173