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基于搜索者优化算法(SOA,Seeker Optimization Algorithm),首次将启发式搜索优化的理念引入到调频差分混沌键控超宽带接收机的积分时间最优化问题中。分析了积分时间对系统性能的影响,在IEEE 802.15.4a室内信道下得到给定信噪比的最优积分时间及其分布,同时也给出了最优积分时间并随信噪比变化的趋势。仿真结果表明,采用SOA较之传统方法更能高效地找到最优值。结论给该系统实现中的参数选择提供了有力依据,新理念的引入也将对难以用闭合数学模型表示的系统优化提供有益指导。
Based on Seeker Optimization Algorithm (SOA), the concept of heuristic search optimization is introduced for the first time into the integration time optimization problem of FMDCH receiver. The influence of integration time on system performance is analyzed. The optimal integration time and its distribution for a given signal-to-noise ratio are obtained under IEEE 802.15.4a indoor channel. At the same time, the optimal integration time . Simulation results show that using SOA is more efficient than the traditional method to find the optimal value. The conclusion provides a strong basis for the parameter selection in the realization of the system. The introduction of new concepts will also provide useful guidance for system optimization which is difficult to be expressed by the closed mathematical model.