Transmitter-Side Multipath Preprocessing for Pulsed UWB Systems Considering Pulse Overlapping and Narrow-Band Interference
Transmitter-Side Multipath Preprocessing for Pulsed UWB Systems Considering Pulse Overlapping and Narrow-Band Interference
复制标题
考虑脉冲重叠和窄带干扰的脉冲 UWB 系统发射机侧多径预处理
DOI：
10.1109/tvt.2007.901061
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发表时间：
2007
影响因子：
6.8
通讯作者：
Huaping Liu
中科院分区：
文献类型：
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作者：
Shiwei Zhao;Huaping Liu
我们分析了脉冲超宽带系统的预瑞克分集组合方案，以将信号处理需求从接收器转移到发射器。我们考虑了一种现实情况，即在基于迫零和特征分析技术优化预瑞克方案时，携带相同发射符号的接收脉冲可能会相互重叠。我们表明，在存在由脉冲重叠引起的脉冲间干扰的情况下，从使用特征分析技术导出的最大化接收信噪比的意义上来说，最佳预瑞克组合方案的性能与具有最大比率组合的传统瑞克相同。我们还分析了存在音调干扰时预瑞克和瑞克方案的不同行为，并提供数值结果以验证存在带内调制干扰时的结论。我们发现，当窄带干扰（NBI）信号数量较少时，预瑞克方案优于瑞克方案；然而，随着 NBI 源数量的增加，这种性能差距会缩小。
We analyze a prerake diversity combining scheme for pulsed ultrawideband systems to shift signal processing needs from the receiver to the transmitter. We consider the realistic case that received pulses carrying the same transmitted symbol could overlap with one another in optimizing the prerake scheme based on zero-forcing and eigenanalysis techniques. We show that in the presence of interpulse interference caused by pulse overlapping, the optimum prerake combining scheme in the sense of maximizing the received signal-to-noise ratio derived by using the eigenanalysis technique performs the same as a conventional rake with maximal ratio combining. We also analyze the different behaviors of prerake and rake schemes in the presence of tone interferers and provide numerical results to validate the conclusions in the presence of in-band-modulated interferers. We find that when the number of narrow-band interference (NBI) signals is small, the prerake scheme outperforms the rake scheme; as the number of NBI sources increases, however, this performance gap reduces.
DOI：
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发表时间：
1999-12
期刊：
--
影响因子：
--
作者：
R. V. Nee;R. Prasad
通讯作者：
R. V. Nee;R. Prasad