[1]褚鹏鸿,仲文.一种改进的使用数字相位扫描技术的空时频码[J].东南大学学报(自然科学版),2009,39(2):197-202.[doi:10.3969/j.issn.1001-0505.2009.02.002]
 Chu Penghong,Zhong Wen.Modified space-time-frequency coding scheme using digital phase sweeping[J].Journal of Southeast University (Natural Science Edition),2009,39(2):197-202.[doi:10.3969/j.issn.1001-0505.2009.02.002]
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一种改进的使用数字相位扫描技术的空时频码()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第2期
页码:
197-202
栏目:
信息与通信工程
出版日期:
2009-03-20

文章信息/Info

Title:
Modified space-time-frequency coding scheme using digital phase sweeping
作者:
褚鹏鸿 仲文
东南大学移动通信国家重点实验室,南京 210096
Author(s):
Chu Penghong Zhong Wen
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
关键词:
数字相位扫描 空时频码 译码复杂度 优化的子载波交织间距
Keywords:
digital phase sweeping space-time-frequency coding decoding complexity optimal subcarrier interleaving
分类号:
TN929.5
DOI:
10.3969/j.issn.1001-0505.2009.02.002
摘要:
提出一种改进的使用数字相位扫描技术的空时频码,用于多输入多输出正交频分复用系统.该空时频码首先将原多输入多输出信道等效为具有2根发送天线的信道,再与Alamouti正交空时码的构造形式相结合,并在频率维上进行编码.详尽推导了该空时频码的误码性能,表明它可以获得全部的分集增益——空间分集以及频率分集,并且在发送端已知信道的空间相关特性以及时延谱时可以找出优化的子载波交织间距来增大码增益.此外,该空时频码可以达到速率为1的传输,而译码复杂度近似降低为某些空频码的1/8,且仿真结果表明该空时频码比一些空(时)频码具有更好的误码性能.
Abstract:
A modified space-time-frequency coding scheme using digital phase sweeping for MIMO-OFDM(multiple input multiple output-orthogonal frequency division multiplexing)system is proposed.It transforms the original MIMO channel into an equivalent channel with two transmit-antennas and combines with the structures of Alamouti orthogonal space-time codes while coding across frequency dimension. The error performance of the proposed scheme is derived, which shows that full diversity—frequency and space diversity can be obtained and optimal subcarrier interleaving separation can be searched to obtain larger coding gain if the transmitter has the knowledge of space correlation and delay profile of the channel. Moreover, the rate of the proposed scheme is 1,the decoding complexity is nearly 1/8 of some known codes and simulation results show that it has better error performance than some codes.

参考文献/References:

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相似文献/References:

[1]麻清华,杨绿溪,何振亚.相关信道下宽带MIMO-OFDM系统中空时频码的分集度分析[J].东南大学学报(自然科学版),2007,37(4):549.[doi:10.3969/j.issn.1001-0505.2007.04.001]
 Ma Qinghua,Yang Luxi,He Zhenya.Diversity analysis of space-time-frequency coded broadband MIMO-OFDM system with correlation across space time and frequency[J].Journal of Southeast University (Natural Science Edition),2007,37(2):549.[doi:10.3969/j.issn.1001-0505.2007.04.001]

备注/Memo

备注/Memo:
作者简介: 褚鹏鸿(1984—),男,硕士生; 仲文(联系人),女,博士,副教授,wenzhong@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(60572072).
引文格式: 褚鹏鸿,仲文.一种改进的使用数字相位扫描技术的空时频码[J].东南大学学报:自然科学版,2009,39(2):197-202.
更新日期/Last Update: 2009-03-20