CAJ | 학술논문

针对正交频分复用（OFDM）具有较高的峰值平均功率比（PAPR）问题,对常用的几种典型的OFDM峰均比抑制算法进行了简要介绍,通过建立实际的非线性信道仿真模型,在系统频谱辐射模板约束下对几种算法降低峰均比的能力和对功率放大器输出功率回退的改善性能进行了仿真,同时对各算法的误码率性能进行分析。仿真结果表明限幅法的综合性能较好,易于实现,可在实际系统中进行应用。
침대정교빈분복용（OFDM）구유교고적봉치평균공솔비（PAPR）문제,대상용적궤충전형적OFDM봉균비억제산법진행료간요개소,통과건립실제적비선성신도방진모형,재계통빈보복사모판약속하대궤충산법강저봉균비적능력화대공솔방대기수출공솔회퇴적개선성능진행료방진,동시대각산법적오마솔성능진행분석。방진결과표명한폭법적종합성능교호,역우실현,가재실제계통중진행응용。
Aiming at higher PAPR in OFDM, some typical PAPR reduction algorithms in OFDM are introduced briefly. Then a practical non-linear channel model is established. Under the spectrum mission mask, a simulation is done to analyze the PAPR reduction capability of some algorithms, the performance improvement of output backoff of power amplifier, and BER performance of some algorithms. The simulation results show that the clipping method has better performance and easy implementation, and can be used in practical systems.