LINK11_SLEW信号的非协同解调  

Non-cooperative Demodulation of LINK11_SLEW

作　　者：陈铸[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2014年第10期1378-1384,共7页Telecommunication Engineering

摘　　要：根据LINK11_SLEW信号的波形协议和帧结构,先对复杂信道下的LINK11_SLEW信号进行一次模拟解调,再采用相关同步算法、重构前导序列测频算法、平均自适应滤波的信道均衡(AFA)算法和最佳采样点鉴相解扰算法进行二次解调,理论推导和计算仿真表明,复杂信道下采用常规解调方式无法有效解调的LINK11_SLEW信号,采用新算法解调星座图在10符号之内达到收敛,在Eb/N0高于12 dB的情况下,解调误码率小于10-3。According to the waveform protocol and frame structure of LINK11_SLEW, an analog demodula-tion of LINK11_SLEW in complex channel is proceeded at first, then the correlation synchronization, fre-quency measurements with restructuring the preamble data, channel equalization with adaptive filtering with averaging algorithm and descrambling with phase discriminator are adopted to the secondary demodula-tion. Theory and simulation both indicate that the new way can lead the constellation map of the LINK11_SLEW which can not be effectively demodulated with normal method to convergence in 10 symbols, and the demodulation bit error rate is under 10-3 when the Eb/N0 is above 12 dB.

关 键 词：战术数据链 LINK11_SLEW 非协同解调 相关同步 信道均衡 

分 类 号：TN911[电子电信—通信与信息系统]