CAJ | 학술논문

在应用脉冲整形( PS )技术降低 OFDM 系统 PAPR 的基础上，提出一种新颖的参数化的Nyquist脉冲称之为参数化正切脉冲，此脉冲包含的设计参数k可以根据系统滚降系数β自由调整，从而尽量降低系统的PAPR。仿真结果表明，相比于常见的升余弦脉冲和反转指数脉冲，新提出的脉冲在降低PAPR性能和保证BER性能方面优势明显，是一种灵活低复杂度的降低OFDM系统PA-PR的脉冲整形方案。
재응용맥충정형( PS )기술강저 OFDM 계통 PAPR 적기출상，제출일충신영적삼수화적Nyquist맥충칭지위삼수화정절맥충，차맥충포함적설계삼수k가이근거계통곤강계수β자유조정，종이진량강저계통적PAPR。방진결과표명，상비우상견적승여현맥충화반전지수맥충，신제출적맥충재강저PAPR성능화보증BER성능방면우세명현，시일충령활저복잡도적강저OFDM계통PA-PR적맥충정형방안。
A new and parametric Nyquist pulse named as parametric tangent pulse is proposed for peak-to-average power ratio ( PAPR ) reduction in orthogonal frequency division multiplexing ( OFDM ) systems using pulse shaping . The proposed pulse contains a new design parameter, k, giving an additional degree of freedom to minimize PAPR for a given roll-off factor, β . Simulation results indicate that the proposed pulse can achieve better performance in terms of PAPR reduction and bit error rate ( BER) , as compared with the traditional raised cosine pulse and flipped-exponential pulse. It is an effective scheme with low complexity and high flexibility to reduce the PAPR of OFDM system by pulse shaping with the proposed parametric tangent Nyquist pulse.