火力与指挥控制
火力與指揮控製
화력여지휘공제
FIRE CONTROL & COMMAND CONTROL
2014年
12期
20-22,26
,共4页
多载波信号%峰值平均功率比%相位优化法%预留子载波
多載波信號%峰值平均功率比%相位優化法%預留子載波
다재파신호%봉치평균공솔비%상위우화법%예류자재파
multicarrier signals%peak-to-average power ratio%phase optimization method%Tone Reservation
为了解决多载波信号峰值平均功率比（PAPR）较高的问题，从多载波信号的初始相位出发，结合预留子载波（TR）降低PAPR的方法，提出了Newman-TR联合算法，经理论分析和仿真表明，该算法能有效降低系统的PA-PR，且不会产生误码率。针对所提算法复杂度较高的问题，提出一种次优搜索来代替全局搜索，降低了计算的复杂度，提高了该算法的实际可行性。
為瞭解決多載波信號峰值平均功率比（PAPR）較高的問題，從多載波信號的初始相位齣髮，結閤預留子載波（TR）降低PAPR的方法，提齣瞭Newman-TR聯閤算法，經理論分析和倣真錶明，該算法能有效降低繫統的PA-PR，且不會產生誤碼率。針對所提算法複雜度較高的問題，提齣一種次優搜索來代替全跼搜索，降低瞭計算的複雜度，提高瞭該算法的實際可行性。
위료해결다재파신호봉치평균공솔비（PAPR）교고적문제，종다재파신호적초시상위출발，결합예류자재파（TR）강저PAPR적방법，제출료Newman-TR연합산법，경이론분석화방진표명，해산법능유효강저계통적PA-PR，차불회산생오마솔。침대소제산법복잡도교고적문제，제출일충차우수색래대체전국수색，강저료계산적복잡도，제고료해산법적실제가행성。
To overcome the shortcoming of high Peak-to-Average Power Ratio(PAPR)in multicarrier signal system,combining the traditional Tone Reservation (TR)algorithm with the initial phase of the multicarrier signal,a Newman-TR method is proposed to reduce PAPR. Simulation shows that the Newman-TR method algorithm can achieve good PAPR reduction and bit errror rate is not increased in the process. However,it has a high computational cost. Aimiling at this problem,a local optimal search method which is instead of the global optimal search is proposed in this paper. The new method can reduce the computational complexity much more effectively and improve the practical feasibility of the improved algorithm.
