| 基于正交循环码的M-ary扩频解扩新算法及FPGA实现 |
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| 引用本文： | 文霄杰,张彦仲,邵定蓉,李署坚,宋伟宁. 基于正交循环码的M-ary扩频解扩新算法及FPGA实现[J]. 遥测遥控, 2011, 0(1): 52-56 |
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| 作者姓名： | 文霄杰 张彦仲 邵定蓉 李署坚 宋伟宁 |
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| 作者单位： | 北京航空航天大学电子信息工程学院; |
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| 摘 要： | 针对基于正交循环码M-ary扩频解扩算法消耗硬件资源较多的问题,提出一种以折叠匹配滤波器为基础的算法及FPGA实现方案。选择合适的计算时钟,算法使用6个加法器和4个乘法器即可实现非相干解扩,比传统相关解扩算法节省资源,两者消耗资源之比随进制数M的增加而降低。实验结果证明了算法的正确性和有效性。
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| 关 键 词： | M-ary正交扩频 解扩 折叠匹配滤波器 FPGA |
De-spreading Scheme and Its FPGA Implementation of M-ary Spread Spectrum Signals Based on Orthogonal Cyclic Codes |
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| Wen Xiaojie,Zhang Yanzhong,Shao Dingrong,Li Shujian,Song Weining. De-spreading Scheme and Its FPGA Implementation of M-ary Spread Spectrum Signals Based on Orthogonal Cyclic Codes[J]. Telemetry & Telecontrol, 2011, 0(1): 52-56 |
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| Authors: | Wen Xiaojie Zhang Yanzhong Shao Dingrong Li Shujian Song Weining |
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| Affiliation: | Wen Xiaojie,Zhang Yanzhong,Shao Dingrong,Li Shujian,Song Weining |
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| Abstract: | To reduce the hardware resource of de-spreading algorithm of M-ary spread spectrum signals based on orthogonal cyclic codes,a new scheme using folded digital matched filter and its FPGA implementation are presented.Compared with the traditional algorithm using correlators,the de-spreading is achieved with six adders and four multipliers applying the new algorithm while the performance is better as M increases.The experiment results verify the validity of the proposed scheme. |
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| Keywords: | M-ary orthogonal spread spectrum De-spreading Folded DMF FPGA |
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