摘要
测量仪表的发展方向是实现移动互联,而其每个通信结点所接收的信号和干扰均是多方向的,而且有时往往受到诸如电机脉冲之类的强干扰。针对此类电磁环境下的无线通信可靠性问题,本研究采用基于功率倒置法的波束形成技术,较好地解决了该问题。仿真结果表明,在三路正交相移键控(QPSK)扩频信号和两路电机脉冲干扰场景下,输入信干比为-40dB时,噪声抑制度达近100dB。
The development trend of measurement meters is realization of mobile interconnectivity,to which the signals and interferences are in multiple and variant directions.Aimed at the reliability of wireless communication in such a complex environment as internet of things(IOT),a space domain filter is designed based on beam forming technique turning this problem to be well solved.The simulation result indicates that in the scenario of two-way QPSK signals and two-way interferences,this filter achieves a significant gain of SNR(signal to noise)under the BER(bit error rate)-SNR curve.
出处
《信息化研究》
2015年第3期43-46,共4页
INFORMATIZATION RESEARCH
基金
江苏省高等学校2013年大学生实践创新创业训练计划项目资助(No.201313112013Y)
江苏省产业化推广项目(No.JH10-23)
南京信息职业技术学院科研项目(No.YK20140102
YKJ10-001)
关键词
仪表
互联
物联网
抗干扰
波束形成
meters
interconnection
IOT
anti-interference
beam forming
