In order to improve the performance of parallel transmission delay compensation in wireless sensor networks,a Kalman filter based parallel transmission delay compensation algorithm for wireless sensor networks is proposed.Time delay error compensation control method is used to balance and control the wireless sensor network channel.Based on this,wavelet transform is used to transform the wireless sensor network information spectrum into the wavelet domain.The constant false alarm probability method in the wavelet do-main is used to identify the wavelet coefficients of inter symbol interference during parallel information transmission,a constant false alarm detector for inter symbol interference wavelet coefficients is constructed to remove inter symbol interference exceeding the detec-tion threshold,and the suppression of inter symbol interference during parallel information transmission is completed.In order to ensure the timeliness of data transmission,the Kalman filtering method is used to compensate for the parallel transmission delay of information in wireless sensor networks.The simulation results show that the average parallel transmission arrival rate of the wireless sensor network information using the proposed algorithm is over 98%,and it has good transmission delay compensation effect.
关键词
无线传感器网络/传输延迟补偿/卡尔曼滤波/码间干扰/网络信息并行传输
Key words
wireless sensor network/transmission delay compensation/Kalman filtering/inter code interference/parallel transmission of network information
维普
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