| 循环迭代信道补偿算法 |
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| 引用本文： | 刘虎,欧冬秀,宋文涛.循环迭代信道补偿算法[J].上海交通大学学报,2006,40(5):752-757. |
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| 作者姓名： | 刘虎 欧冬秀 宋文涛 |
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| 作者单位： | 1. 上海交通大学,电子工程系,上海,200240
2. 同济大学,交通运输学院,上海,200092 |
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| 摘 要： | 在移动通信系统中,由于信道的时变特性,从训练序列得到的信道估计直接应用于数据解扩上,会带来较大的误差.为了降低这种误差,提出了循环迭代的算法,通过对数据域信道估计进行补偿,提高了单个时隙信道估计精度.仿真结果表明:该算法性能良好,特别是在单时隙业务下,由于每个时隙的信道估计独立计算和修正,可以提供准确的信道估计,对数据解扩性能有较大的提高;当用户在高速运动情况下,由于不受用户运动速度和信道衰落的限制,该算法性能明显优于其他方法.
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| 关 键 词： | 时分双工 信道估计 迭代算法 补偿 |
| 文章编号： | 1006-2467(2006)05-0752-06 |
| 收稿时间： | 2005-05-16 |
| 修稿时间： | 2005年5月16日 |
The Recursive Channel Estimation Algorithm |
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| LIU Hu,OU Dong-xiu,SONG Wen-tao.The Recursive Channel Estimation Algorithm[J].Journal of Shanghai Jiaotong University,2006,40(5):752-757. |
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| Authors: | LIU Hu OU Dong-xiu SONG Wen-tao |
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| Institution: | 1. Inst. of Electronic Eng. , Shanghai Jiaotong Univ. , Shanghai 200240, China; 2. Inst. of Traffic and Transportation, Tongji Univ. , Shanghai 200092 |
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| Abstract: | In wireless communication system,it will bring on error,when the channel estimation get from training sequence is directly used in data de-spread,because of the time varying of wireless channel.To reduce this error,a recursive channel estimation algorithm was proposed to compensate the channel estimation of data field to increase the precision of the channel estimation of single timeslot.The simulation results present that this algorithm has good performance.Especially in single time slot,the calculation and correction of channel estimation in every time slot are independent,the precision and performance of data despread are improved.While the UE(User Equipment) is in high speed,this algorithm is not limited by speed and channel fading,the performance of this algorithm is better than that of others. |
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| Keywords: | time division duplex(TDD) channel estimation recursive method compensation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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