CAJ | 학술논문

针对OFDM系统中存在高峰值平均功率比（PAPR）影响系统性能,而传统的选择性映射（SLM）解决方法具有高复杂度且不能完全避免系统中高峰值信号出现的缺点,在研究映射和限幅算法的基础上,提出了一种S L M-C联合算法,该算法利用选择性映射方法和限幅方法在性能上互补的特性来降低P A P R。Matlab仿真结果表明,该联合算法有效地降低了OFDM系统的峰均比,且具有复杂度低,易实现等优点。
침대OFDM계통중존재고봉치평균공솔비（PAPR）영향계통성능,이전통적선택성영사（SLM）해결방법구유고복잡도차불능완전피면계통중고봉치신호출현적결점,재연구영사화한폭산법적기출상,제출료일충S L M-C연합산법,해산법이용선택성영사방법화한폭방법재성능상호보적특성래강저P A P R。Matlab방진결과표명,해연합산법유효지강저료OFDM계통적봉균비,차구유복잡도저,역실현등우점。
Aiming at the shortcomings of the OFDM system existing high peak average power ratio（PAPR） and traditional selective mapping（SLM） having high complexity and unable to avoid completely the appearance of peak signal,proposes a new SLM-C combination algorithm based on the SLM algorithm and clipping algorithms to reduce PAPR.The Matlab simulation results show that the proposed method can effectively reduce the PAPR of OFDM system,has low complexity and is easy to achieve.