| 一种基于多载波的空时频扩频编码算法及其性能分析 |
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| 引用本文： | 邹颖,刘宏立,李颖.一种基于多载波的空时频扩频编码算法及其性能分析[J].桂林电子科技大学学报,2005,25(6):10-13. |
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| 作者姓名： | 邹颖 刘宏立 李颖 |
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| 作者单位： | 湖南大学,电气与信息工程学院,湖南,长沙,410082;湖南大学,电气与信息工程学院,湖南,长沙,410082;湖南大学,电气与信息工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金资助项目(60272051) |
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| 摘 要： | 通过一种空时频扩频(STFS)的编码算法,将单载波的空时扩频扩展到多载波,进行空间、时间 和频率的联合编码,这种编码在相同符号率下比空时扩频具有更大的分集度和更高的编码增益,用线性 合并最大似然检测法检测和仿真结果都显示这种空时频扩频比空时扩频具有更好的性能。
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| 关 键 词： | 空时扩频 空时频扩频 多载波 分集度 编码增益 |
| 文章编号： | 1001-7437(2005)06-10-04 |
| 修稿时间： | 2005年8月23日 |
An Analysis into STFS Coding Arithmetic Based on Multi-carrier and Its Performance |
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| ZOU Ying,LIU Hong-li,LI Ying.An Analysis into STFS Coding Arithmetic Based on Multi-carrier and Its Performance[J].Journal of Guilin Institute of Electronic Technology,2005,25(6):10-13. |
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| Authors: | ZOU Ying LIU Hong-li LI Ying |
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| Abstract: | Space-time spreading (STS) scheme is a transmit diversity scheme for cdma2000 . It has been widely adopted in 3G wireless communication systems. The symbol of STS are first spread by multi-walsh code and then transmitted through one carrier and multi-antenna simultaneously. STS is expanded from a single carrier to multi-carrier when space, time and frequency are coded, which results in a space-time-frequency spreading(STFS) coding arithmetic. STFS has higher diversity order and encoding gain than STS at the same symbol rate. Both linear combination maximum likelihood and simulation result show that STFS arithmetic has better performance than STS. |
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| Keywords: | space-time spreading space-time-frequency spreading multi-carrier diversity order encoding gain |
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