摘要
本文提出基于低压电力线远程抄表方案,给出了电力线信道模型,建立低压电力线载波OFDM(Orthogonal Frequency Division Multiplexing)通信系统。用自适应OFDM调制方式代替传统的固定调制方式,从而提高传输效率;仿真结果表明:自适应OFDM调制方式提高了OFDM系统整体误比特率性能和信道频谱利用率。
In this paper remote meter reading programme based on the low-voltage power line is proposed, Given the power line channel model, established OFDM communication system of low-voltage power line carrier . Adaptive OFDM modulation was instead of the traditional fixed modulation methods, thereby enhancing the efficiency of transmission; The simulation results show that： adaptive OFDM modulation OFDM system as a whole improved bit error rate performance and channel spectrum utilization.
出处
《微计算机信息》
2009年第7期95-96,共2页
Control & Automation
基金
实时频谱分析方法研究
颁发部门:河南省骨干教师基金资助课题
射频识别技术在烟草仓储管理中应用研究
颁发部门:河南省教育厅(2008B120011)
