节点文献
直扩O-QPSK在ZigBee技术中仿真分析
DSSS O-QPSK Simulation and Analysis in Technology of ZigBee
【Author】 ZHANG TongXing,QIU ShuBo,GU Shuai Institute of Automation,Shandong Institute of Light Industry,JiNan 250353,P.R.China
【机构】 山东轻工业学院自动化研究所;
【摘要】 ZigBee通信在传输系统中存在噪声干扰和多径衰落影响,导致系统误比特率高的问题。本文提出了信号和直接序列扩频码相乘的方法,增强ZigBee通信抗干扰能力,并建立O-QPSK系统的通信模型。通过比较直扩O-QPSK和未扩频O-QPSK通信系统模型,可知直扩O-QPSK通信能够减小误比特率,提高ZigBee通信的可靠性。通过Simulink仿真,仿真结果表明直扩O-QPSK的通信系统能够满足IEEE802.15.4协议的要求。
【Abstract】 ZigBee communication exists noise interference and multipath fading effects in the transmission system,caused the system bit error rate problems.The paper uses signal multiplying direct sequence spread spectrum code method,enhanced ZigBee communication interference capability and established O-QPSK communication system mode.By comparing the DSSS O-QPSK and no DSSS O-QPSK,the DSSS O-QPSK communication can reduce the bit error rate and improve the reliability of ZigBee communications.BySimulink simulation,simulation results show that DSSS O-QPSK communication system can meet the requirements of IEEE802.15.4 agreement.
【Key words】 Zigbee; O-QPSK; Simulink Simulation; SNR; Signal-to-noise Ratio; Direct Sequence Spread Spectrum;
- 【会议录名称】 第二十九届中国控制会议论文集
- 【会议名称】第二十九届中国控制会议
- 【会议时间】2010-07-29
- 【会议地点】中国北京
- 【分类号】TN914.42
- 【主办单位】中国自动化学会控制理论专业委员会(Technical Committee on Control Theory,Chinese Association of Automation)