CAJ | 학술논문

在隐藏导频信道估计系统中,导频和数据叠加同时发送,造成接收端分离的导频信息中掺杂着数据成分,从而严重干扰信道估计,目前尚无针对这方面的解决方案,因此提出双边阈值补偿算法,该算法应用于发送端.发送数据经过双边阈值补偿算法处理后迫使数据均值为零,然后叠加导频信息并发送出去,接收端用传统的导频数据分离方法就可以得到高质量的导频信息,从而提高信道估计精度.仿真结果表明:和传统隐藏导频信道估计系统相比,在最小二乘和最小均方误差算法下信道估计精度和误码率方面均有明显改善.
재은장도빈신도고계계통중,도빈화수거첩가동시발송,조성접수단분리적도빈신식중참잡착수거성분,종이엄중간우신도고계,목전상무침대저방면적해결방안,인차제출쌍변역치보상산법,해산법응용우발송단.발송수거경과쌍변역치보상산법처리후박사수거균치위령,연후첩가도빈신식병발송출거,접수단용전통적도빈수거분리방법취가이득도고질량적도빈신식,종이제고신도고계정도.방진결과표명:화전통은장도빈신도고계계통상비,재최소이승화최소균방오차산법하신도고계정도화오마솔방면균유명현개선.
In the hidden pilot channel estimation system,the pilot and data are superimposed and simultaneously transmitted,the pilot information which has caused the receiver end separated,is mixed with data components so as to induce the channel estimation accuracy difference,now there is no solution for this regard,so the bilateral threshold compensation algorithm is proposed. This algorithm is applied in the sender data,the send data after bilateral threshold compensation algorithm processing force data with zero mean,then superimpose the pilot infor-mation and send out,the receiver end uses the traditional pilot data separation method to obtain high quality pi-lot information. Simulation results show that,compared with the traditional hidden pilot channel estimation sys-tem,the proposed method significantly improves the channel estimation,in the Least Squares(LS)algorithm and Minimum Mean Square Error(MMSE)algorithm,channel estimation accuracy and error rate have significantly been improved.