OFDM基于子载波相移的低复杂度PTS方法Subcarrier phase shift based low complexity PTS method for OFDM
刘鹏成,徐湛
摘要(Abstract):
正交频分复用(OFDM)是一种多载波技术,但其信号存在较高的峰均比(PAPR)问题,通过发送端功率放大器时需要较高的线性工作范围。研究一种新的低复杂度部分传输序列(PTS)峰均比抑制方法,该方法在时域对不同分组子载波相移,寻找低PAPR的OFDM信号传输。通过传递少量相移信息,可以在接收端对基带信号逆向移位操作恢复原始基带信号。仿真结果表明,所提方法在低复杂度下可以有效降低PAPR,同时保持较好的误比特率性能。
关键词(KeyWords): OFDM;多载波技术;PAPR;PTS;峰均比抑制;子载波相移
基金项目(Foundation):
作者(Author): 刘鹏成,徐湛
DOI: 10.16652/j.issn.1004-373x.2018.17.004
参考文献(References):
- [1]郝喜国.正交频分复用系统中降低PAPR的算法研究[D].太原:太原理工大学,2016.HAO Xiguo.Research on PAPR reduction algorithm in orthogonal frequency division multiplexing system[D].Taiyuan:Taiyuan University of Technology,2016.
- [2]张春蕾,张亮,马志程,等.联合改进法降低OFDM-PON系统的峰均比[J].光通信技术,2015,39(1):8-10.ZHANG Chunlei,ZHANG Liang,MA Zhicheng,et al.Joint improvement method to reduce peak-to-average ratio of OFDMPON system[J].Optical communication technology,2015,39(1):8-10.
- [3]QU Daiming,LI Li,JIANG Tao,et al.Invertible subset LDPC code for PAPR reduction in OFDM systems with low complexity[J].IEEE transactions on wireless communications,2014,13(4):2204-2213.
- [4]HASAN M M.A new PAPR reduction technique in OFDM systems using linear predictive coding[J].International journal of wireless personal communications,2014,75(1):707-721.
- [5]DUANMU Chunjiang,CHEN Hongtao.Reduction of the PAPR in OFDM systems by intelligently applying both PTS and SLM algorithms[J].International journal of wireless personal communications,2014,74(2):849-863.
- [6]WOO J Y,JOO H S,KIM K H,et al.PAPR analysis of classIII SLM scheme based on variance of correlation of alternative OFDM signal sequences[J].IEEE communications letters,2015,19(6):989-992.
- [7]JI Jinwei,REN Guangliang,ZHANG Huining,et al.A semiblind SLM scheme for PAPR reduction in OFDM systems with low-complexity transceiver[J].IEEE transactions on vehicular technology,2015,64(6):2698-2703.
- [8]EL-MAHALLAWY M S,HAGRAS E A A,FATHY S A.Genetic algorithm for PAPR reduction in SLM wavelet-OFDM systems[C]//2014 IEEE International Conference on Computer,Control,Informatics and Its Applications.Bandung:IEEE,2014:136-140.
- [9]LUO Renze,LI Rui,DANG Yupu,et al.Two improved SLM methods for PAPR and BER reduction in OFDM-ROF systems[J].Optical fiber technology,2015,21(1):26-33.
- [10]LIANG H Y.Integrating CE and modified SLM to reduce the PAPR of OFDM systems[J].International journal of wireless personal communications,2015,80(2):709-722.
- [11]PYLA S,PADMA R K,BALASUBRAHMANYAM N.Improvement of PAPR in OFDM systems using SLM technique and digital modulation schemes[M].India:Springer,2014.
- [12]KU S J.Low-complexity PTS-based schemes for PAPR reduction in SFBC MIMO-OFDM systems[J].IEEE transactions on broadcasting,2014,60(4):650-658.
- [13]IBRAHEEM Z T,RAHMAN M M,YAAKOB S N,et al.Effect of partition length variability on the performance of adjacent partitioing PTS in PAPR reduction of OFDM systems[C]//2014 IEEE International Symposium on Computer Applications and Industrial Electronics.Penang:IEEE,2014:24-28.
- [14]WANG Zhongpeng,CHEN Shoufa.Reduction PAPR of OFDM signals by combining grouped DCT precoding with PTS[J].Journal of signal and information processing,2014,5(4):135-142.
- [15]何向东,杨霖.OFDM系统中基于时域信号部分循环移位的低复杂度PTS算法[J].系统工程与电子技术,2015,37(9):2135-2140.HE Xiangdong,YANG Lin.Low complexity PTS algorithm based on partial cyclic shift of time domain signals in OFDM system[J].Systems engineering and electronics,2015,37(9):2135-2140.