恶劣电力线信道中的SOQPSK-MIL调制方法  

SOQPSK-MIL Modulation Method Used in Severe Noise Powerline Channel

作　　者：王永建[1] 许俊峰[1] 周渊[1] 云晓春[1] 

机构地区：[1]国家计算机网络应急技术处理协调中心,北京100029

出　　处：《南京理工大学学报》2012年第1期61-65,共5页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(61001091;60873217)

摘　　要：为了能够更好地在恶劣电力线信道中传输信号,该文提出了一种新的整形偏移四相相移键控-军用(Shaped-offset quadrature phase-shift keying-Military,SOQPSK-MIL)调制方法。该调制算法中调制信号的波形与原有的Simon定义的16个波形相比,在一个符号时间内波形的可能性只有8种。在解调过程中滤波器的个数减少为原来的一半,大大降低解调的复杂度,误码性能没有发生变化。给出了新的SOQPSK-MIL调制方法的解调过程。结合多径干扰条件下的电力线通信环境,可知该调制算法较适合在恶劣信道中使用。In order to transmit signals with better quality in severe noise powerline channel,a new modulation method SOQPSK-MIL（Shaped-offset quadrature phase-shift keying-Military）is proposed here.Compared with the method proposed by Simon which has 16 different waveforms,the new scheme has only half number waveforms.The number is reduced to half for the demodulation of the received signal through the less filter number.This shows that the modulation method is good for powerline channel with the merit of no performance degradation.The demodulation method is given here for the received signal.Compared with the noisy powerline communication environment,this method is fit for severe noisy channel.

关 键 词：电力线信道 整形偏移四相相移键控-军用 网格图 维特比译码 

分 类 号：TN957.51[电子电信—信号与信息处理]