| TDS-OFDM系统的功率调整技术研究 |
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| 引用本文： | 周晓,杨昉,宋健. TDS-OFDM系统的功率调整技术研究[J]. 电视技术, 2011, 35(3): 71-73,80 |
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| 作者姓名： | 周晓 杨昉 宋健 |
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| 作者单位： | 1. 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
2. 清华大学电子工程系,北京,100084 |
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| 摘 要： | 针对频域双PN序列填充的TDS-OFDM系统,提出了通过调整训练序列与帧体数据功率比值来降低系统误符号率的方法,并通过调整两者的功率比值对系统在多径衰落信道下的误符号率性能进行仿真.仿真结果表明选择合适的功率比值会带来信噪比的增益.
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| 关 键 词： | TDS-OFDM 信道估计 训练序列 功率调整 误符号率 |
Research on Power Ratio Adjusting for TDS-OFDM System |
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| ZHOU Xiao,YANG Fang,SONG Jian. Research on Power Ratio Adjusting for TDS-OFDM System[J]. Ideo Engineering, 2011, 35(3): 71-73,80 |
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| Authors: | ZHOU Xiao YANG Fang SONG Jian |
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| Affiliation: | ZHOU Xiao,YANG Fang,SONG Jian(Tsinghua National Laboratory for Information Science and Technology,State Key Lab on Microwave and Digital Communications,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | In this paper,an algorithm of adjusting power ratio between training sequence(TS) and frame body for the time-domain synchronous orthogonal frequency division multiplexing system(TDS-OFDM) with dual PN-sequence in frequency domain as the TS to achieve the minimum symbol error rate is proposed.Simulation shows that an optimal power ratio can achieve SNR gain for the system. |
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| Keywords: | TDS-OFDM |
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