| GMSK数字化调制的FPGA设计与实现 |
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| 引用本文： | 徐立升,周冬冬,张晨光.GMSK数字化调制的FPGA设计与实现[J].无线电通信技术,2014(3):76-78. |
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| 作者姓名： | 徐立升 周冬冬 张晨光 |
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| 作者单位： | 北方信息控制集团有限公司,江苏南京210000 |
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| 摘 要： | 针对GMSK调制的特点,提出了一种数字化的调制方法。使用matlab仿真工具对GMSK调制进行截断和量化,生成GMSK调制查找表,存入FPGA内部的存储器,通过查表实现GMSK调制的数字化,克服了传统GMSK模拟调制方法的相位不够准确,无法进行相干解调的缺点,提高系统设计的灵活性。最后分析了调制信号的频谱特性和接收端信号的基带波形,验证了GMSK数字化调制的正确性和可行性。
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| 关 键 词： | GMSK 数字调制 FPGA |
Design and Implementation of FPGA for Digital GMSK Modulation |
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| XU Li-sheng,ZHOU Dong-dong,ZHANG Chen-guang.Design and Implementation of FPGA for Digital GMSK Modulation[J].Radio Communications Technology,2014(3):76-78. |
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| Authors: | XU Li-sheng ZHOU Dong-dong ZHANG Chen-guang |
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| Affiliation: | (Northern Information Control Group Ltd, Nanjing Jiangsu 210000, China) |
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| Abstract: | Aiming at the characteristics of GMSK modulation,a digital modulation of GMSK is presented.The modulation of GMSK is cut off and quantified by using matlab simulation tool in order to generate a modulation lookup which is stored in FPGA, and the digital modulation is achieved by using lookup. The digital modulation overcomes the shortcoming of analog modulation by which the coherent demodulation can＇t be implemented and the flexibility of system design can＇t be improved.By analyzing the spectral characteris- tic of GMSK modulation signal and the baseband waveform of receiving end signal, the validity and feasibility of digital GMSK modula- tion are proved. |
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| Keywords: | GMSK digital modulation FPGA |
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