| 空频发射分集技术在TDS-OFDM中的实现 |
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| 引用本文： | 竺旭东,王劲涛.空频发射分集技术在TDS-OFDM中的实现[J].电视技术,2012,36(21):1-3,7. |
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| 作者姓名： | 竺旭东 王劲涛 |
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| 作者单位： | 清华大学电子工程系,清华信息科学与技术国家实验室,微波与数字通信技术国家重点实验室,北京100084 |
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| 摘 要： | 为提高在衰落信道中数字电视地面广播(DTTB)系统的传输性能,设计了在时域同步正交频分复用(TDS-OFDM)系统中发射分集技术的应用方案,并在FPGA上实现了TDS-OFDM传输系统双天线发射分集的硬件系统。为了能够快速且实时处理,发射端和接收端硬件实现均采用了流水线结构,并对硬件中的核心模块进行了多次复用以节省硬件资源。仿真结果和硬件测试表明,这种发射分集应用方案能够有效提高系统的接收性能,增加信号传输的可靠性。
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| 关 键 词： | 发射分集 空频编码 时城同步正交频分复用 现场可编程门阵列 数字电视地面广播 |
| 收稿时间： | 5/8/2012 9:57:37 AM |
| 修稿时间： | 2012/5/24 0:00:00 |
Implementation of Transmit Diversity Based on TDS-OFDM System |
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| ZHU Xudong and WANG Jintao.Implementation of Transmit Diversity Based on TDS-OFDM System[J].Tv Engineering,2012,36(21):1-3,7. |
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| Authors: | ZHU Xudong and WANG Jintao |
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| Affiliation: | Department of Electronic Engineering, Tsinghua University,Department of Electronic Engineering, Tsinghua University |
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| Abstract: | In this paper, a design of transmit diversity based on TDS-OFDM system is introduced to improve the performance in fading channels and has an implementation on FPGA with double antenna emission. The pipeline structure is used here to meet the real-time processing requirement and core modules are also reuse to save hardware resources. Both computer simulation and hardware test show than the design can effectively improve the receiver performance and increase the reliability of the signal transmission. |
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| Keywords: | Transmit diversity Space frequency coding TDS-OFDM FPGA |
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