摘要
欲实现测井电缆通信系统的高速数据传输,可以采用正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术。测井数据由于具有很大相关性,因此在OFDM系统进行IFFT运算时,会形成很大峰均功率比(Peak-to-Average Power Ratio,PAPR),影响系统性能。文中主要采用部分传输序列(Partial Transmit Sequences,PTS)算法的改进算法对高相关性测井数据的PAPR进行处理,兼顾算法性能和运算复杂度。通过MATLAB软件仿真,仿真证明,改进PTS技术能有效抑制系统高PAPR,同时降低运算复杂度,为测井电缆高速数据传输系统的优化提供了理论依据。
OFDM technology can realize high-speed data transmission of logging cable communication system. Due to the significant correlation, the logging data can form a large peak to average power ratio in the IFFT operation of the OFDM system, which has a great impact on the performance of the system. This paper is based on PTS algorithm to restrain the high PAPR and improve the PTS from multi angle, taking into account the performance of the algorithm and computational complexity, the improved method performance is simulated by MATLAB. The simulation results show that the improved IriS can effectively restrain the system PAPR and reduce the computational complexity, which provides a theoretical basis for the optimization of the well-logging cable system.
出处
《电子设计工程》
2017年第6期105-108,113,共5页
Electronic Design Engineering
