CAJ | 학술논문

为了提高电力线载波通信的可靠性和有效性，提出一种在发送设备端进行的信号处理方法，即相位调整预编码方法。利用了发送多个载波信号相位改变的不同，可以改变多个载波信号叠加功率和，从而减少电力线载波通信的峰均比。分析了峰均比形成的原因，提出了以最小化发送功率为目标函数，求解每个载波发送相位的优化问题。仿真结果表明，该预编码方法能够有效抑制电力线载波通信中过高的峰均比问题，在不增加复杂度的前提下，有效提高了通信的可靠性，证明了该方法的正确性和有效性。
위료제고전력선재파통신적가고성화유효성，제출일충재발송설비단진행적신호처리방법，즉상위조정예편마방법。이용료발송다개재파신호상위개변적불동，가이개변다개재파신호첩가공솔화，종이감소전력선재파통신적봉균비。분석료봉균비형성적원인，제출료이최소화발송공솔위목표함수，구해매개재파발송상위적우화문제。방진결과표명，해예편마방법능구유효억제전력선재파통신중과고적봉균비문제，재불증가복잡도적전제하，유효제고료통신적가고성，증명료해방법적정학성화유효성。
In-order-to-improve-the-reliability-and-effectiveness-of-the-power-line-carrier-communication,-this-paper-proposes-a-signal-processing-method-conducted-at-sending-device-terminal,-i.e.-phase-adjustment-precoding-method.-By-using-that-the-phase-change-of-sending-multiple-carrier-signal-is-different,-it-can-change-the-superposition-power-of-multiple-carrier-signal,-thus-reduce-the-peak-to-average-ratio-(PAR)-of-power-line-carrier-communication.-It-analyzes-the-causes-of-the-formation-of-PAR,-and-puts-forward-an-optimization-problem-to-solve-each-carrier-sending-phase-by-minimizing-sending-power-as-the-objective-function.-Simulation-results-show-that-the-precoding-method-can-effectively-restrain-the-high-PAR-problem-of-power-line-carrier-communication-and-improve-the-reliability-of-the-communication-without-any-increase-of-complexity,-which-proves-the-correctness-and-effectiveness-of-the-proposed-method.