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认知NC-OFDM系统一种改进的信道估计 被引量：1

Improved Channel Estimation in NC-OFDM System Model of Cognitive Radio
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摘要 介绍了认知无线电NC-OFDM系统中的信道估计技术,着重分析了随机插入导频模式和迭代IDFT变换域降噪方法。通过引入转换分解算法,对迭代IDFT变换域降噪方法进行改进,改进的信道估计算法与迭代IDFT变换域降噪方法有相同的估计性能,但改进的信道估计算法运算量少,估计器复杂度低,提高了硬件资源的利用,具有实用性。 In this paper, the NC-OFDM systems of cognitive radio is introduced, design of random pilot models and iterative IDFT transform domain noise reduction method are analyzed. Pull in the transformation decomposition algorithms, the iterative IDFT transform domain noise reduction method is improved. Compares the improved channel estimation algorithm and iterative IDFT transform domain noise reduction method, they have the same per- formance of estimation, but it is very less computation, reduces the complexity of the estimator, improves the utilization of hardware resources, and provided with more practical.
作者 李校林 楚高峰 李君锋 张祖凡
机构地区 重庆邮电大学通信新技术应用研究所 重庆信科设计有限公司 郑州电力职业技术学院
出处 《电视技术》 北大核心 2012年第1期94-97,132,共5页 Video Engineering
基金 重庆市科技攻关计划项目(CSTC 2010AC2143)
关键词 认知无线电 NC-OFDM 信道估计 随机插入导频 IDFT cognitive radio NC-OFDM channel estimation random pilot models IDFT
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献10

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二级参考文献12

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共引文献16

同被引文献9

  • 1WEI Weijiang,CUl Hongyan,CHEN Jianya. Spectrum-aware cluster-based muting protocol for multiple-hop cognitive wireless network [ C ]//Prec. IEEE Int. Conf. an Conununications Technology. and Applications ( ICCTA 2009). Beijing:lEEE Press ,2009 :16-18.
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  • 3SHIH C F, LIAO W J. Exploiting route robustness in joint routing and spectrum alleeation in multi -hop cognitive radio networks [ C ]//Proc. IEEE Wireless Communications and Networking Conf. (WCNC 2010). Sydney, Australia : [ s. n. ] ,2010 : 18-21.
  • 4GAO Cunhao, YI Shi, THOMAS Y. Multicast communications in multi- hop cognitive radio networks [ J ]. IEEE Journal on .Selected Areas in Communieations ,2011,29(4) :784-793.
  • 5CHU Fengseng,CHEN K C. Radio resource allocation in OFDMA cogni- tive radio systems[ C]//Proc. the 18th Annual IEEE International Sym- posium on Personal, Indoor and Mobile Radio Communications. [ S. 1. ] : 1EEE Press ,2007 : 1-5.
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  • 7覃凤谢,杜杨,张欣.认知无线电路由信道选择研究[J].数字通信,2010,37(4):82-83. 被引量：1
  • 8唐宏,鲁玉芳,黄秋宴.基于认知无线电的WiMAX系统共存方案研究[J].电视技术,2011,35(3):81-84. 被引量：3
  • 9向碧群,张正华,覃凤谢,宋华,王小平.基于信道容量估计的一种认知无线电路由算法[J].重庆邮电大学学报（自然科学版）,2011,23(4):406-410. 被引量：3

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2012年 第1期

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