Synchronization of WCDMA TDD Node B using Better Security Sequences

2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI:10.1109/ICICS.2005.1689199

K. Yok-Khiong, X.J.H. Yap, Lim Woo Lip

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引用次数: 3

Abstract

In order to prevent inter-slot interference and enhance the system capacity in wideband code division multiple access (WCDMA) time division duplex (TDD) mode of communication, synchronization between node Bs (NBs) are necessary. Although the most straightforward way of achieving synchronization is by using the Global Positioning System (GPS), 3GPP hopes to achieve a completely independent and self-reliant communication system. Therefore 3GPP proposed using concatenated sequences for synchronizing time division duplex (TDD) Node Bs in order to compensate the timing difference among Node Bs. 3GPP suggested using the concatenated extended complementary (CEC) sequences and CEC sequences with multiple code offsets for this synchronization purpose. In this paper, we propose using cyclically extended sequences using integer numbers (mod 4) for NB synchronization. The proposed sequences have comparable autocorrelation and cross correlation properties than the CEC sequences. The purpose of using better security sequences is to prevent intentional sabotage

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基于更好安全序列的WCDMA TDD节点B同步

在宽带码分多址(WCDMA)时分双工(TDD)通信方式中，为了防止隙间干扰和提高系统容量，需要在节点b (nb)之间进行同步。虽然实现同步最直接的方式是使用全球定位系统(GPS)，但3GPP希望实现一个完全独立和自力更生的通信系统。因此，3GPP建议使用串联序列来同步时分双工(TDD)节点b，以补偿节点b之间的时间差。3GPP建议使用串联扩展互补(CEC)序列和具有多个码偏移的CEC序列来实现同步。在本文中，我们提出了使用整数(mod 4)的循环扩展序列进行NB同步。与CEC序列相比，所提出的序列具有相当的自相关和互相关特性。使用更好的安全序列的目的是防止蓄意破坏

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2005 5th International Conference on Information Communications & Signal Processing

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