CAJ | 학술논문

为提高第四代OFDM移动通信系统性能,有效降低OFDM系统的PAPR,运用MAT-LAB软件对限幅滤波法、选择映射法（SLM）、部分传输序列法（PTS）和动态星座扩展法（ACE）四种PAPR抑制算法进行仿真分析。结果表明：限幅滤波法、SLM、PTS三种算法的误码率高、复杂度高、计算量大;动态星座扩展法可以较好地降低OFDM系统的PAPR,明显改善系统性能,且误码率低,运算量小,与SLM和PTS算法相比较,具有较强的实用性。
위제고제사대OFDM이동통신계통성능,유효강저OFDM계통적PAPR,운용MAT-LAB연건대한폭려파법、선택영사법（SLM）、부분전수서렬법（PTS）화동태성좌확전법（ACE）사충PAPR억제산법진행방진분석。결과표명：한폭려파법、SLM、PTS삼충산법적오마솔고、복잡도고、계산량대;동태성좌확전법가이교호지강저OFDM계통적PAPR,명현개선계통성능,차오마솔저,운산량소,여SLM화PTS산법상비교,구유교강적실용성。
Aimed at improving the performance of the fourth-generation OFDM mobile communication system,and reducing the PAPR of OFDM system effectively,this paper describes a simulation and analysis of four kinds of PAPR suppression algorithm,consisting of clipping and filtering,selective mapping(SLM),partial transmit sequences(PTS),and active constellation extension(ACE) by using MATLAB.The simulation shows that,as opposed to the three algorithms,such as,clipping and filtering,and SLM,PTS suffering a higher bit error rate,a greater complexity,and larger calculation,active constellation extension algorithm demonstrates advantages,such as a greater decrease in the PAPR of OFDM system,a significant improvement in the system performance,and a lower bit error rate,and smaller computation.It follows that(ACE) boasts a stronger practicability than SLM and PTS algorithm.