| FH-OFDM系统同步算法研究与FPGA实现 |
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| 引用本文： | 程永茂,赵峰民,曲晖,司记伟.FH-OFDM系统同步算法研究与FPGA实现[J].电视技术,2012,36(9):33-36. |
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| 作者姓名： | 程永茂 赵峰民 曲晖 司记伟 |
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| 作者单位： | 海军航空工程学院科研部,山东烟台,264001 |
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| 基金项目： | 国防科技预研基金 51307050302 |
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| 摘 要： | 研究了FH-OFDM系统的跳频同步方法和定时同步方法。跳频同步中利用GPS同步脉冲保证了接收机的时间基准。定时同步中使用了基于最小均方差的判决方法,对匹配滤波器进行了改进,有效地减少了载波频偏的干扰,并针对FPGA应用对算法进行了简化。对FH-OFDM同步系统进行了FPGA实现,性能测试结果表明该同步实现方法可以快速准确地检测到信号帧以及各个符号的起始位置。
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| 关 键 词： | 跳频 正交频分复用 同步 FPGA |
| 收稿时间： | 2011/8/22 0:00:00 |
| 修稿时间： | 2011/11/6 0:00:00 |
Synchronization research and FPGA implementation for FH-OFDM system |
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| Cheng yongmao,zhao feng min,qu hui and si ji wei.Synchronization research and FPGA implementation for FH-OFDM system[J].Tv Engineering,2012,36(9):33-36. |
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| Authors: | Cheng yongmao zhao feng min qu hui and si ji wei |
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| Affiliation: | Naval Aeronautical and Astronautical University,Department of Scientific Research, Naval Aeronautical and Astronautical University,Department of Scientific Research, Naval Aeronautical and Astronautical University,Department of Scientific Research, Naval Aeronautical and Astronautical University |
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| Abstract: | Synchronization algorithms for timing and frequency hopping in FH-OFDM system are discussed. Sync pulse is exploited as timing reference in frequency hopping synchronization. Minimum mean square error (MMSE) algorithm and improved matched filter are presented for timing synchronization and simplified for FPGA, improving anti-interference performance for frequency offset. FH-OFDM synchronization system is implemented by FPGA. Performance test results shows that our algorithm and implementation can detect the start of each frame and symbol accurately. |
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| Keywords: | frequency hop OFDM synchronization FPGA |
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