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首页> 外文会议>2010 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB 2010) >Geometric capacity studies for DTV transmitter identification using Kasami sequences
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Geometric capacity studies for DTV transmitter identification using Kasami sequences

机译：使用Kasami序列进行DTV发射机识别的几何容量研究

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摘要

The transmitter identification of the DTV systems becomes crucial nowadays. Transmitter identification (TxID, or transmitter fingerprinting) technique is used to detect, diagnose and classify the operating status of any radio transmitter of interest. A pseudo random sequence was proposed to be embedded into the DTV signal before transmission. Thus, the transmitter identification can be realized by invoking the cross-correlation functions between the received signal and the possible candidates of the pseudo random sequences. Gold sequences and Kasami sequences are two excellent candidates for the transmitter ID sequences as they provide a large family of nearly-orthogonal codes. In order to investigate the sensitivity of the transmitter identification in different topologies and Kasami sequences with different length, we present the analysis here for four different geometric layouts, namely circular distribution, doubly concentric and circular distribution, square array and hexagonal tessellation under the ENG (electronic news gathering) crews' working environment. The covered area and the lowest received signal-to-interference ratio are considered as two essential parameters for the multiple-transmitter identification. It turns out to be that the larger the Kasami sequence length, the larger the received signal-to-interference ratio. Our new analysis can be used to determine the required Kasami sequence length for a specific broadcasting coverage.
机译：如今，DTV系统的发射机识别变得至关重要。发射机标识（TxID或发射机指纹）技术用于检测，诊断和分类任何感兴趣的无线电发射机的工作状态。建议在传输之前将伪随机序列嵌入DTV信号中。因此，可以通过调用接收信号与伪随机序列的可能候选之间的互相关函数来实现发射机识别。 Gold序列和Kasami序列是发送器ID序列的两个极好的候选者，因为它们提供了大范围的近乎正交的代码。为了研究发射机识别在不同拓扑结构和具有不同长度的Kasami序列中的敏感性，我们在ENG下对四种不同的几何布局进行分析，即圆形分布，双同心和圆形分布，正方形阵列和六边形镶嵌（电子新闻采集）工作人员的工作环境。覆盖区域和最低的接收信号干扰比被认为是多发射机识别的两个基本参数。事实证明，Kasami序列长度越大，接收到的信号干扰比就越大。我们的新分析可用于确定特定广播覆盖范围所需的Kasami序列长度。

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