| 基于迹准则的空频格码的设计 |
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| 引用本文： | 耿嘉,曹秀英,毕光国. 基于迹准则的空频格码的设计[J]. 应用科学学报, 2006, 24(5): 463-468 |
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| 作者姓名： | 耿嘉 曹秀英 毕光国 |
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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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| 摘 要： | 通过对空时格码与空频格码内在联系的理论分析,提出原本用于设计空时格码的迹准则也可以用于空频格码的设计,且仿真表明用迹准则设计出的空频格码性能明显优于已知的其他空频格码.文中还通过对迹准则的改进,使其设计出的空频格码性能进一步提高.径时延、交织以及编码器状态数对码性能的影响也在文中进行了分析.
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| 关 键 词： | 空时格码 迹准则 空频格码 正交频分复用 |
| 文章编号： | 0255-8297（2006）05-0463-06 |
| 收稿时间： | 2005-07-28 |
| 修稿时间： | 2005-07-282005-11-23 |
Design of Space-Frequency Trellis Codes Based on Trace Criterion |
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| GENG Jia,CAO Xiu-ying,BI Guang-guo. Design of Space-Frequency Trellis Codes Based on Trace Criterion[J]. Journal of Applied Sciences, 2006, 24(5): 463-468 |
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| Authors: | GENG Jia CAO Xiu-ying BI Guang-guo |
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| Affiliation: | National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China |
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| Abstract: | By analyzing the relation between space-frequency trellis codes(SFTC) and space-time trellis codes(STTC),it is demonstrated that the trace criterion can be used in the design of SFTCs although this criterion is originally proposed for STTCs.Simulation results show that the codes designed by the trace criterion outperform other known SFTCs.In addition,the code performance can be further improved by enhancement of the trace criterion.Effects of path delay,interleaving and encoder states on the code performance are analyzed. |
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| Keywords: | space-frequency trellis codes trace criterion space-time trellis codes OFDM |
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