CAJ | 학술논문

基于室内多径衰落信道统计模型,分析并仿真了直扩二相相移键控多用户超宽带无线通信系统的比特误码率性能.通过理论分析,推导出了系统比特误码率性能的解析表达式,该表达式表示为脉冲宽度、脉冲重复周期、用户数以及脉冲波形等信道参数和系统参数的函数,从而可以方便、统一地分析这些参数对系统性能的影响.仿真结果与基于理论分析的数值计算结果相当吻合,表明直扩二相相移键控超宽带系统的多址干扰为正态分布.
기우실내다경쇠락신도통계모형,분석병방진료직확이상상이건공다용호초관대무선통신계통적비특오마솔성능.통과이론분석,추도출료계통비특오마솔성능적해석표체식,해표체식표시위맥충관도、맥충중복주기、용호수이급맥충파형등신도삼수화계통삼수적함수,종이가이방편、통일지분석저사삼수대계통성능적영향.방진결과여기우이론분석적수치계산결과상당문합,표명직확이상상이건공초관대계통적다지간우위정태분포.
The bit error rate (BER) performance of multi-user direct spreading bi-phase shift keying (DS-BPSK) direct impulse ultra wideband (UWB) systems is analyzed and simulated based on a statistical indoor multi-path fading channel model. The BER of the system is theoretically derived and given in closed form,which is expressed in terms of channel parameters and system parameters such as pulse width parameter, pulse repeat period, user number and pulse waveform. With this BER expression, the effect of these parameters on the system performance can be evaluated in a uniform way. Simulation results well match the theory numerical results, and prove that the multi-access interference (MAI) of DS-BPSK UWB is a normal distribution.