一种基于FPGA的通信信号调制方法及装置
By using a modulation method to generate complex signals in an FPGA, the problem of not being able to output complex signals in existing technologies is solved, achieving more efficient signal processing and stability.
CN121173424BActive Publication Date: 2026-07-17YANGZHOU YUAN ELECTRONICS TECH CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YANGZHOU YUAN ELECTRONICS TECH CO LTD
- Filing Date
- 2025-10-17
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing FPGA communication signal modulation schemes cannot achieve modulated signal output in complex signal form, resulting in poor noise immunity, low transmission efficiency, and susceptibility to multipath interference and frequency offset.
Method used
In the FPGA, the modulation rate is used as the read clock to read the modulation signal in the RAM. The real and imaginary parts are determined according to the modulation type, and then multiplied with the carrier frequency signal in complex signal form to generate and output a complex signal.
Benefits of technology
The generated modulated signal is a complex signal, which has the advantages of anti-aliasing and high frequency utilization, thus improving the flexibility and stability of signal processing.
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Abstract
本发明属于信号调制技术领域，提供了一种基于FPGA的通信信号调制方法及装置，其中方法包括：获取调制速率，控制以调制速率作为读时钟，读取RAM中调制信号m(t)；根据输入的调制类型，确定调制信号m(t)参与复乘的实部和虚部；将调制信号m(t)参与复乘的实部和虚部与复信号形式的载频信号进行复乘，得到完成调制的复信号；完成调制的复信号按照调制速率进行输出。本发明调制后得到的已调信号为复信号，复信号相较于实信号具有抗混叠、频率利用率高等优点，有利于之后对已调信号进行各种处理；同时本发明在FPGA中可通过控制以调制速率输出已调信号，实现信号输出速率的控制。
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