| SFBC-OFDM系统中联合迭代信道估计与空频解码算法 |
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| 引用本文： | 周 鹏,赵春明,杨宜进,许 威.SFBC-OFDM系统中联合迭代信道估计与空频解码算法[J].通信学报,2007,28(2):1-8. |
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| 作者姓名： | 周 鹏 赵春明 杨宜进 许 威 |
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| 作者单位： | 东南大学,移动通信国家重点实验室,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划) |
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| 摘 要： | 提出了一种基于SFBC-OFDM系统的联合迭代信道估计与空频解码算法。首先为提高初始信道估计器的性能,提出了一种基于时频变换(TFT)的信道估计算法;其次提出了利用信道估计值与解码符号进行联合迭代信道估计与空频解码算法。分析与仿真结果显示,在准静态、快时变以及相关信道条件下,新的联合迭代信道估计与空频解码算法都有效地提高了系统性能。
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| 关 键 词： | 信道估计 空频解码 时频变换 迭代 |
| 文章编号： | 1000-436X（2007）02-0001-08 |
| 修稿时间： | 2006-07-13 |
Novel joint iterative channel estimation and space-frequency decoding algorithm for SFBC-OFDM systems |
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| ZHOU Peng,ZHAO Chun-ming,YANG Yi-jin,XU Wei.Novel joint iterative channel estimation and space-frequency decoding algorithm for SFBC-OFDM systems[J].Journal on Communications,2007,28(2):1-8. |
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| Authors: | ZHOU Peng ZHAO Chun-ming YANG Yi-jin XU Wei |
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| Affiliation: | National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China |
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| Abstract: | A novel joint iterative channel estimation and space-frequency decoding algorithm was proposed for SFBC-OFDM systems.At first,a new channel estimation algorithm based on time-frequency transforms(TFT) was de-veloped to improve the performance of the initial channel estimator,and then,by exploiting the channel estimated values and the decoded symbols,the joint iterative channel estimation and space-frequency decoding algorithm was advanced.Analyses and simulation results show that the novel joint iterative algorithm improves performance remarkably for the quasi-static,fast time-varying and correlated channels. |
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| Keywords: | SFBC-OFDM |
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