SNR ESTIMATION AND BIT ALLOCATION APPLIED IN LOGGING TELEMETRY EQUIPMENT

摘要：

Nowadays many logging communication systems adapt the Orthogonal Frequency Division Multiplexing (OFDM) for the implementation of high transmission rate.In order to realize higher rate,adaptive bit allocation is proposed,which is based on signal-to-noise ratio (SNR).SNR is a significant evaluation parameter for the channel quality in the communication systems.In this paper,we derive a SNR estimation method for the logging cable channel.Simulation results show that the proposed algorithm is available to obtain relatively accurate measurements of SNR.On the basis of measurements,we assign the bits for sub-channels by a simplified bit allocation method.Compared with fixed bit allocation,this method improves the transmission rate.

关键词： OFDM Data transmission Logging cable channel SNR estimation Bit allocation

作者: Lan YANG Hao CHEN Xiu-ming WANG Liang TANG

作者单位: Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, China;University of Chinese Ac Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, China

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 163-166

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）