CAJ | 학술논문

针对变换域通信系统对随机相位随机性与相关性的要求，提出了一种采用混沌映射m序列控制法的基函数相位映射方法，相比于传统一维m序列产生基函数，该方法所产生基函数的随机性提高了N倍(N为m序列的长度)；同时由于采用混沌映射，产生了大量互相关系数很小的基函数，具有更加良好的相关性。仿真结果表明，采用混沌映射m序列控制法的基函数相位映射方法，提高了基函数的相关性，有效地降低了系统的误码率。
침대변환역통신계통대수궤상위수궤성여상관성적요구，제출료일충채용혼돈영사m서렬공제법적기함수상위영사방법，상비우전통일유m서렬산생기함수，해방법소산생기함수적수궤성제고료N배(N위m서렬적장도)；동시유우채용혼돈영사，산생료대량호상관계수흔소적기함수，구유경가량호적상관성。방진결과표명，채용혼돈영사m서렬공제법적기함수상위영사방법，제고료기함수적상관성，유효지강저료계통적오마솔。
Based on the requirements of the pseudorandom phase vector in transform domain communication system ( TDCS) ,a new method using chaos mapping and m-sequences control to generate the pseudorandom phases of the basis function in TDCS was proposed. The implementation method and the simulation results regarding the correlation performance for the basis function were discussed in detail. Compared with that of the parallel,the basis function's randomicity of the new method is N times by that of one-ary method( the length of m-sequence is N) ,as well the basis functions have better correlation performance for that many basis functions with small cross-correlation coefficients can be generated by chaos mapping. The simulation results show that the correlation performance of the basis function produced by the new method was improved and the performance on BER was better.