摘要
针对多指数连续相位调制信号的调制指数同步困难且算法复杂的问题,提出一种实现结构相对简单的低复杂度的Multi-h CPM调制指数同步算法。基于最大似然准则获得Multi-h CPM信号的调制指数同步误差和残留定时误差的联合估计,分别利用残留定时误差近似为零的性质与滤波器冲击响应量化函数来降低算法的复杂度,并进行性能仿真验证。仿真结果表明:该算法调制指数同步误差估计的性能良好,适用于全响应和部分响应的Multi-h CPM信号。
To solve the difficulty and complexity of modulation index problem of Multi-h CPM, a low complexity modulation index synchronization algorithm for Multi-h CPM was proposed, whose implementation structure is relatively simple. Joint estimation of modulation index synchronization error and residual timing error was obtained using maximum likelihood principles. Then, computational complexity was reduced through quantification the filter impulse response and residual timing error being approximately equal to zero. Simulation analysis show that, the proposed algorithm is suitable for full response and partial response Multi-h CPM. Meanwhile, it has a good performance.
出处
《兵工自动化》
2015年第9期45-50,共6页
Ordnance Industry Automation
