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首页> 外文会议>International Conference on Signal Processing(ICSP'06); 20061116-20; Guilin(CN) >A Modified Orthogonal Sequence for Spread Spectrum Communication and Distance Estimation Multiplex System
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A Modified Orthogonal Sequence for Spread Spectrum Communication and Distance Estimation Multiplex System

机译：扩频通信和距离估计复用系统的改进正交序列

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摘要

In spread spectrum communication and distance estimation multiplex system, a unique compound sequence (inner sequence compound with outer sequence) enable the system to achieve the mission of double precision range and have capacity of high efficient communication. However, the improvement of the system performance increases the probability of inner sequence interfering with each other which results in declining anti-noise performance of the system; therefore we must select a pseudonoise (PN) random sequence with good correlation property as inner sequence for solving the above problem. In this paper, we propose a modified orthogonal sequence which is structured by compounding Walsh sequence with specific selected m sequence. The modified sequence has a similar or better correlation property compared with some other existed orthogonal sequences, especially in code balance and flexible construction method. From performance analysis and computer statistics, we can conclude that the new sequence has a good performance which is fit for the multiplex system.
机译：在扩频通信和距离估计复用系统中，独特的复合序列（内部序列与外部序列复合）使系统能够实现双精度范围的任务，并具有高效通信的能力。但是，系统性能的提高会增加内部序列相互干扰的可能性，从而导致系统的抗噪性能下降；因此，为了解决上述问题，必须选择具有良好相关性的伪噪声（PN）随机序列作为内部序列。在本文中，我们提出了一种经过修改的正交序列，该序列是通过将Walsh序列与特定的选定m序列混合而构成的。与其他已存在的正交序列相比，修改后的序列具有相似或更好的相关性，尤其是在代码平衡和灵活构造方法上。从性能分析和计算机统计数据可以得出结论，新序列具有良好的性能，适合多路传输系统。

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