CAJ | 학술논문

电力线载波通信（PLC, Power Line Communication）技术被广泛地应用在电力数据采集系统中，大部分采用正交频分复用（OFDM, Orthogonal Frequency Division Multiplexing）技术，而电力线中的异步脉冲噪声和周期脉冲噪声对OFDM电力线系统的性能影响很大，特别是对系统的可靠性影响最大，造成系统的误比特率上升。针对此问题，利用OFDM信号的时域稀疏性，在接收端对发送信号进行消除脉冲噪声处理，减小接收端计算量，提高系统的可靠性。通过仿真结果可以表明，所提的均衡方案有效消除了脉冲噪声的影响，同时降低了误码率。
전력선재파통신（PLC, Power Line Communication）기술피엄범지응용재전력수거채집계통중，대부분채용정교빈분복용（OFDM, Orthogonal Frequency Division Multiplexing）기술，이전력선중적이보맥충조성화주기맥충조성대OFDM전력선계통적성능영향흔대，특별시대계통적가고성영향최대，조성계통적오비특솔상승。침대차문제，이용OFDM신호적시역희소성，재접수단대발송신호진행소제맥충조성처리，감소접수단계산량，제고계통적가고성。통과방진결과가이표명，소제적균형방안유효소제료맥충조성적영향，동시강저료오마솔。
Power Line carrier Communication (PLC) technology is widely used in electric power data acquisition system, most of them adopt Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology, and the asynchronous pulse noise and periodic impulse noise in the power line have a great influence on the performance of OFDM power system, especially the greatest influence on the reliability of the system, due to the bit error rate of the system. Aiming at this problem, this paper uses OFDM signal sparse time-domain, eliminates impulse noise on the sending signal in the receiving terminal, and reduces the the calculation amount of the receiver, which improves the reliability of the system. The simulation results show that the proposed equalizing scheme eliminates the influence of impulse noise effectively and reduces the bit error rate.