| 一种基于空时分组编码的MIMO-OFDM系统接收空间分集方案 |
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| 引用本文： | 徐信,蔡跃明,徐友云.一种基于空时分组编码的MIMO-OFDM系统接收空间分集方案[J].信号处理,2007,23(1):36-40. |
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| 作者姓名： | 徐信 蔡跃明 徐友云 |
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| 作者单位： | 解放军理工大学通信工程学院,江苏南京,210007 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 文献1]提出了一种使用正交设计的单输入多输出正交频分复用(SIMO-OFDM)系统的空间分集接收结构,目的是为了减少接收端DFT块的数目以降低系统复杂度和减少功率消耗。由于在线性处理过程中噪声叠加的影响,造成了一定的性能损失。本文提出了一种基于空时分组编码的多输入多输出OFDM(MIMO-OFDM)系统空间分集接收方案,通过在文献1]提出的分集结构中引入使用空时分组编码的发射分集,弥补了因减少DFT块数目而造成的性能损失。本文对使用空时分组编码后的处理过程进行了推导,并对使用空时编码前后的系统性能进行了仿真和比较。
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| 关 键 词： | 正交频分复用 空时分组编码 发射分集 单输入多输出 多输入多输出 |
| 修稿时间： | 2005年1月11日 |
A Receive Space Diversity Scheme for MIMO-OFDM Systems Based on Space-Time Block Coding |
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| Xu Xin,Cai Yueming,Xu Youyun.A Receive Space Diversity Scheme for MIMO-OFDM Systems Based on Space-Time Block Coding[J].Signal Processing,2007,23(1):36-40. |
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| Authors: | Xu Xin Cai Yueming Xu Youyun |
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| Abstract: | In order to reduce system complexity and power consumption in OFDM systems with single transmitter antenna and multiple receiver antennas by reducing the number of DFT blocks,a receive space diversity architecture for OFDM systems using orthog- onal designs is proposed in reference paper1],but system performance is degraded by the effect of noise superposition in the linear pro- cessing.In this paper,transmitter diversity techniques based on space-time block coding is used in the top architecture and compensate for the system performance degradation.We give a process for OFDM systems using space-time block code and compare the performance between the proposed new systems and the original systems,effective benefits can be shown in our simulations. |
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| Keywords: | OFDM Space-time block code Transmitter diversity Single input multiple output Multiple input multiple output |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
