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GMSK调制器的FPGA实现
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格式:rar |
大小:269 |
2009-08-13
吴湛
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GMSK（高斯最小移频键控）信号优良的频谱特性在跳频通信中有广阔的应用前景。本文分析了GMSK 调制器的设计理论，给出了一种全数字实现结构并在FPGA 上加以实现。仿真结果表明，这种数字实现结构产生的GMSK 基带信号具有良好的功率谱及眼图，同时能够有效避免I /Q两条支路信号幅度及正交载波相位失衡。
【关键词】GMSK；数字调制；数字实现；FPGA
【Abstract】GMSK is a spectrum-efficient modulation signal used widely in the FH communication system. In this paper, the design theory of GMSK modulator is analyzed and an improved digital implementation structure is obtained. Then this structure is implemented on FPGA. Simulation result show that GMSK signal generated by the digital implementation structure has nice PSD and eye pattern. Also, the effect of quadrature phase error and amplitude imbalance is avoided.
【Keywords】GMSK；Digital Modulation；Digital Implementation；FPGA
【关键词】GMSK；数字调制；数字实现；FPGA
【Abstract】GMSK is a spectrum-efficient modulation signal used widely in the FH communication system. In this paper, the design theory of GMSK modulator is analyzed and an improved digital implementation structure is obtained. Then this structure is implemented on FPGA. Simulation result show that GMSK signal generated by the digital implementation structure has nice PSD and eye pattern. Also, the effect of quadrature phase error and amplitude imbalance is avoided.
【Keywords】GMSK；Digital Modulation；Digital Implementation；FPGA
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