【摘要】 针对平衡度函数只能考察二值序列平衡性的问题,提出了可以考察多值序列平衡性的序列最大平衡差函数,利用该函数分析了四相OSCM序列平衡性分别与序列长度和过抽样参数p的关系。仿真和分析表明:通过优选可以得到平衡性优异的OSCM序列,该序列可作为第三代移动通信CDMA系统扩频序列的一种待选方案。更多还原

【Abstract】 In order to solve the problem that the degree of balance function can only indicate the binary sequence balance,a maximum balance difference function of the sequence for the consideration of multi-value sequences was proposed.The analysis for the relationship between the balance of quadricphase over-sampled chaotic map(OSCM) sequence and sequence length and over-sampled parameter p was given by using this function.Both simulation results and the analysis show that through optical selection the good balanced performance OSCM sequence can be obtained and it could be used as one of the spreading spectrum sequence candidates for 3G mobile communication CDMA systems.更多还原