摘要
单通道全双工系统是一种在同时同频发送和接收信号的通信系统,因此本地接收机需要进行自干扰消除。文章对数字自干扰消除进行了研究,通过分析量化位数对误码率的影响得到ADC量化前的最大干信比;分析了解调后自干扰信号对期望信号的影响,得到自干扰消除需要达到的消除量;最后给出了自干扰信道估计的模型,为数字自干扰消除的实现提供了理论依据。
Single channel full-duplex system is a communication system which can transmit and receive signal in a single time/frequency channel,thus self-interference cancellation will exist in the local receiver.In this paper,digital self-interference cancellation was studied,the maximal Interference-to-Signal Ratio（ISR）was gained by analyzing the impact of digitalizing bit on the symbol error rate;the impact of self-interference signal on desired signal was analyzed,and the desired cancellation amount of self-interference cancellation was gained.At last,the model selfinterference channel estimation was given,providing evidence for the realization of digital selfinterference cancellation.
出处
《半导体光电》
CAS
北大核心
2016年第3期404-407,共4页
Semiconductor Optoelectronics
基金
陕西省自然科学基金项目(2014JM2-6106)
关键词
单通道全双工
数字自干扰消除
模数转换
信道估计
频移键控
single channel full-duplex
digital self-interference cancellation
ADC
channel estimation
FSK
