机构地区: 哈尔滨工业大学电子与信息工程学院通信技术研究所
出 处: 《哈尔滨工业大学学报》 2008年第1期28-30,38,共4页
摘 要: 针对在密集多径的室内环境中的高速脉冲超宽带(I-UWB)系统码间干扰(Inter Chip Interference ICI)问题,首先推导了I-UWB的码间干扰估算公式.结合公式计算以及仿真结果,研究了脉冲重复周期、跳时步长以及脉冲波形对码间干扰的影响.研究结果表明,码间干扰只受脉冲重复周期和脉冲波形这两个因素的影响.提出了一种通过组合高斯波形构造优化脉冲波形方案.仿真结果表明,采用这种优化波形可以很好地抑制码间干扰. To restrain inter chip interference (ICI) for high-speed I-UWB systems working in the dense multipath indoor circumstance, the estimated formula of ICI for I - UWB was derived. Then the impact of the pulse repetition period, time-hopping slot time and pulse waveform on ICI was studied. The mathematical and simulated results show that only pulse repetition period and pulse affect ICI. And an optimal waveform scheme constructed by combination of Gauss pulses was promoted. The simulated result shows that this optimal waveform can effectively restrain ICI.