A Novel PTS Architecture for PAPR Reduction of OFDM Signals
Orthogonal frequency division multiplexing (OFDM) is an attractive technique for modern wireless communication. However, high peak-to-average power ratio (PAPR) of the transmitted signal is a major disadvantage of OFDM. So far, numerous approaches have focused on the PAPR reduction. As one of these approaches, partial transmit sequence (PTS) is effective and uncomplicated. This paper presents a novel PTS architecture for PAPR reduction of OFDM Signals, and the architecture can implement FFT/IFFT operation and control the PAPR of the transmit signal. Because of the delay feedback and the data scheduling approaches in IFFT architecture, the hardware costs of the memories, complex multipliers, complex adders, and ROM respectively are reduced by 75.6％, 44.0％, 28.6％, and 75.0％ compared to the R2(3)SDF multiple processor approach. Moreover, the operation time of IFFT is reduced by 75％ compared to the grouping approach by reordering the frequency-domain sequences. Additionally, the number of operated candidates can be reduced from 64 to 16 through searching effective phase factors.
orthogonal frequency division multiplexing(OFDM) peak-to-average power ratio (PAPR) partial transmit sequence (PTS) fast Fourier transform (FFT)
Xin-chun Wu Jin-xiang Wang Zhi-gang Mao
Div.of Microelectronics Harbin Institute of Technology Harbin,China
国际会议
广州
英文
2008-11-19（万方平台首次上网日期，不代表论文的发表时间）