摘要
当前国内电力线信道普遍存在噪声特性恶劣、复杂多变的特点,严重影响了电力线通信正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术的可靠性。文章针对该问题,提出了一种基于子载波集的自适应分配算法,该算法定义了子载波集的数学模型,能够根据信道噪声情况调整子载波分配,以提高通信可靠性。对基于子载波集的OFDM系统自适应分配算法进行仿真,仿真结果验证了该算法能有效保证OFDM电力线通信的可靠性,实现频带资源优化分配。
The communication reliability of OFDM based on power line communication（PLC） is affected seriously by noise environment. To solve this problem, this paper proposes a sub-carrier set based adaptive allocation algorithm of OFDM system in PLC. The theory model of sub-carrier set is defi ned in this paper, which is able to adjust the frequency-band allocation according to the channel noise situation. Finally, simulation results verify that the proposed algorithm can effectively guarantee the reliability of OFDM power line communication, and achieve bandwidth resource allocation optimization.
出处
《电力信息与通信技术》
2016年第2期62-65,共4页
Electric Power Information and Communication Technology
关键词
电力线载波通信
OFDM
自适应分配
power line carrier communication
OFDM
adaptive allocation
