CAJ | 학술논문

　　为了能够获得较精确的快时变信道估计，利用模糊模型拟合快时变信道，提出了一种新的信道估计算法。算法采用自适应技术进行导频子载波频域传输函数模型参数的识别，然后通过插值拟合全部信道的频域传输函数。仿真结果表明，在系统多普勒频移小于0．1的情况下，信道估计的MSE性能得到改善。
　　위료능구획득교정학적쾌시변신도고계，이용모호모형의합쾌시변신도，제출료일충신적신도고계산법。산법채용자괄응기술진행도빈자재파빈역전수함수모형삼수적식별，연후통과삽치의합전부신도적빈역전수함수。방진결과표명，재계통다보륵빈이소우0．1적정황하，신도고계적MSE성능득도개선。
In order to obtain accurate channel estimation in fast time-varying channels,a novel channel estima-tion algorithm is proposed by using the fuzzy model to track the fast time-varying channels. Based on the adap-tive technique,the identification for the frequency transmission function model of pilot subcarriers is carried out. The fitting for the frequency channel transmission function of all subcarriers can be obtained by interpolation. According to the simulation results,when the Doppler shift of the systems is less than 0.1,the algorithm effec-tively improves the MSE of the channel estimation.