基于循环谱包络的BPSK码元速率估计算法研究

Research on chip-rate estimation for BPSK based on cyclic spectrum amplitude

针对采用频域平滑周期图法估计循环谱,提出了一种改进的基于循环谱包络BPSK信号的码元速率估计算法。该算法选用较高的循环频率来进行参数估计,可获得较高的处理信噪比。通过在循环频率域的一维搜索即可获得码元速率参数的估计。给出了信号参数估计的具体步骤,并分析了估计算法的性能,进行了计算机仿真实验。仿真结果验证了该算法的有效性。

An innovatory chip-rate estimation based on the cyclic spectrum amplitude is presented. The algorithm chooses higher cyclic frequency to estimate signal parameter, which can get high processing signal-to-noise ratio. The chip rate can be estimated by reducing multi-dimensional search to one single dimensional search. The algorithm procedure is given and the algorithm performance is analyzed. Then the compute simulations are offered. The computer simulations show that this algorithm is efficient.