Performance analysis of DS-UWB multiple access under imperfect power control
Performance analysis of DS-UWB multiple access under imperfect power control
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DOI：
10.1109/tcomm.2004.833204
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发表时间：
2004-09
影响因子：
8.3
通讯作者：
N. Boubaker;K. Letaief
中科院分区：
文献类型：
--
作者：
N. Boubaker;K. Letaief
超宽带（UWB）技术的特征在于传输极短持续时间的无线电脉冲。为了提高其多址接入能力，UWB技术可以与传统的扩频技术相结合。到目前为止，大部分的研究集中在完美的功率控制条件，并采用跳时扩频与脉冲无线电使用脉冲位置调制信号。在这封信中，我们概述了有吸引力的功能的直接序列（DS）UWB MA系统采用对映信令和跳时比较。在理想和非理想功率控制条件下，对DS-UWB通信系统的MA能力和误比特率性能进行了评估。上界的总组合比特传输速率的推导。
Ultra-wideband (UWB) technology is characterized by transmitting extremely short duration radio impulses. To improve its multiple-access (MA) capability, UWB technology can be combined with traditional spread-spectrum techniques. So far, much of the research has focused on perfect power-control conditions and on employing time-hopping spread-spectrum with impulse radio using pulse-position modulated signals. In this letter, we outline the attractive features of direct-sequence (DS) UWB MA systems employing antipodal signaling and compare it with time hopping. Performance of DS-UWB communication systems, in terms of MA capability and bit-error rate performance, are evaluated under both perfect and imperfect power-control conditions. An upper bound on the total combined bit-transmission rate is derived.