信道估计是正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术数据解调与均衡的基础,文章在分析电力线信道特性的基础上,分析了采用离散导频技术的信道估计算法的性能,针对其抗噪声干扰能力弱的特点,提出了通过截短...信道估计是正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术数据解调与均衡的基础,文章在分析电力线信道特性的基础上,分析了采用离散导频技术的信道估计算法的性能,针对其抗噪声干扰能力弱的特点,提出了通过截短时域冲击响应长度来提高估计精度的算法。在电力线信道环境下的仿真计算证明了该算法具有良好的估计性能。展开更多
With the deepened transformation of China's power system, the stability and reliability of power utilization have been dramatically improved, but meter reading data acquisition does not keep pace with the times. With...With the deepened transformation of China's power system, the stability and reliability of power utilization have been dramatically improved, but meter reading data acquisition does not keep pace with the times. With the continuous maturity of low-voltage power line communication (PLC), this leads us to see hopes of using PLC technology to realize remote meter reading. In this paper, based on current PLC technology and combining domestic and foreign successful cases, a beneficial exploration and research is conducted from the composition and establishment of software and the design of software and protocol.展开更多
文摘信道估计是正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术数据解调与均衡的基础,文章在分析电力线信道特性的基础上,分析了采用离散导频技术的信道估计算法的性能,针对其抗噪声干扰能力弱的特点,提出了通过截短时域冲击响应长度来提高估计精度的算法。在电力线信道环境下的仿真计算证明了该算法具有良好的估计性能。
文摘With the deepened transformation of China's power system, the stability and reliability of power utilization have been dramatically improved, but meter reading data acquisition does not keep pace with the times. With the continuous maturity of low-voltage power line communication (PLC), this leads us to see hopes of using PLC technology to realize remote meter reading. In this paper, based on current PLC technology and combining domestic and foreign successful cases, a beneficial exploration and research is conducted from the composition and establishment of software and the design of software and protocol.