A Novel FFT/IFFT Based Peak-to-Average Power Reduction Method for OFDM Communication Systems Using Tone Reservation

摘要：

One of the main drawbacks of OFDM systems is the high Peak-to-Average Power ratio, which could limit transmission efficiency and efficient use of HPA. In this paper we present a modified tone reservation scheme for PAPR reduction using FFT iterations to generate the tones. In this Scheme, the reserve tones are designed to both cancel peaks and slightly increase the average power to induce a better PAPR reduction..The tones are generated by means of 2 FFT operations and the process is sometimes iterated to achieve better PAPR reductions. This scheme achieves a significant PAPR reduction of at least 4.6dB when about 4％ of the carriers are used as reserve tones and with even lesser iterations when simulated in an OFDM system.

关键词： High Power Amplifier (HPA), Orthogonal Frequency Division Multiplexing (OFDM) Peak-to-Average Power Ratio (PAPR) Inverse Fast Fourier Transform (1FFT) Tone Reservation (TR), Tone Injection (TI)

作者: Samuel Oru Besong Xiaoyou Yu Bin Li Weibing Hou Xiaochun Wang

作者单位: Department of Communication Engineering Hunan University Changsha, China Research Institute of Tsinghua University of Shenzhen, Shenzhen, China The 3rd Research Institute Academy of Air Force Equipments Beijing,China

会议类型: 国际会议

会议名称: 2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)

会议地点: 长沙

会议语种:英文

页码: 1-4

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）