摘要
从抑制错误定时时刻测度函数峰值的角度出发,提出采用加权的方法设计循环前缀,从而获得正确定时时刻测度函数的尖锐峰值。同时,为了最大限度消弱随机脉冲噪声对算法性能影响,采用峰值距离差评估判决。相对于传统的循环前缀添加方法,本文同步算法精度更高。
To reduce the impact of point of measure function when error of timing exists, weighted cyclic prefix was proposed, by which the peak value was obtained only when the accurate timing presents for main path and multi- ple paths. Meanwhile, in order to maximize the weakening of impact by random impulse noise on performance, the ideology of the distance between the peaks from the assessed and judged was suggested to apply in system. In contrast with the traditional cyclic prefix, it was easier to obtain the accurate timing synchronization of symbol.
出处
《科学技术与工程》
北大核心
2013年第16期4552-4555,4578,共5页
Science Technology and Engineering
关键词
低压电力线载波通信
OFDM调制
加权
符号定时同步
low-voltage power-line carrier communication OFDM weighted timing synchronizationof symbol
