| 引用本文： |
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蒋云昊,刘思琪,丁稳房,等.自适应干扰抵消系统的双边带调幅干扰抵消特性[J].电讯技术，2018，58（4）： - . [点击复制]
- JIANG Yunhao,LIU Siqi,DING Wenfang,et al.Cancellation performance of double sideband interference for adaptive interference cancellation systems[J].，2018，58（4）： - . [点击复制]
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| 摘要: |
| 根据系统模型给出了自适应干扰抵消系统针对双边带调幅制干扰时的稳态权值表达式，推导出干扰抵消比计算式，分析了影响干扰抵消效果的因素及其作用规律，并给出了提高干扰抵消比的设计思路和方法。对于双边带调幅制信号，通过提高系统增益来提高干扰抵消比，将受到信号带宽和等效传输延迟距离的制约。信号带宽越宽或等效传输延迟距离越大，通过增大增益所能实现的干扰抵消比提高越有限。对于一定的信号带宽，可以通过增益和等效传输延迟距离的联合设计来提高干扰抵消比。仿真结果验证了理论分析的正确性和可行性。 |
| 关键词: 自适应干扰抵消 双边带调幅 干扰抵消比 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61771187）；湖北省自然科学基金资助项目（2016CFB396）；湖北工业大学高层次人才基金项目（BSQD2015021） |
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| Cancellation performance of double sideband interference for adaptive interference cancellation systems |
| JIANG Yunhao,LIU Siqi,DING Wenfang,XI Ziqiang |
| (Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy;Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System,Hubei University of Technology,Wuhan 430068,China) |
| Abstract: |
| The steady state weights of adaptive interference cancellation system(AICS) for Double Sideband(DSB) interference are given according to the system model.The calculation formulas of interference cancellation ration(ICR) are deduced by time-domain analysis.The influence factors of the ICR and their action rules are analyzed and the design thinking and methods are obtained.For DSB signal,the improvement of the ICR by increasing the system gain is limited by the signal bandwidth and the equivalent transmission delay distant(ETDD).The wider the signal bandwidth is or the bigger the ETDD is,the limiter of the improvement of the ICR can be achieved.For a certain signal bandwidth,the ICR can be improved by joint design of gain and ETDD.The correctness and feasibility of the theoretical analysis are verified by simulation. |
| Key words: adaptive interference cancellation double sideband amplitude modulation interference cancellation ratio(ICR) |
《电讯技术》编辑部 