Data Embedding, the Method of Types, and Universal Receivers

数据嵌入、类型方法和通用接收器

基本信息

批准号：
0093859
负责人：
Jerry Gibson
金额：
$ 4.72万
依托单位：
Southern Methodist University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2000
资助国家：
美国
起止时间：
2000-09-01 至 2002-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0093859&HistoricalAwards=false
关键词：
Data Embedding Method Types Universal

项目摘要

The field of information hiding includes steganography, where a message is concealed in another data stream, and watermarking, where ownership data is included in a digital object to be protected. A third field of information hiding is the field of data embedding, wherein additional information is incorporated in the transmitted data stream by using a key and distorting (slightly) the original object. The embedded information cannot be reconstructed without the key. We propose an entirely new approach to data embedding based upon the method of types and universal receiver design. In our approach, a new data sequence is embedded in the original data stream using the method of types, and the embedded data is extracted using a type-based universal receiver. The choice of type and rate for the embedded data is based upon an analysis of portions of the original data stream. The universal receiver learns the type from the received data alone, and hence, there is no side information as in previous data embedding techniques. The embedding process and the receiver are both data adaptive, so the original data stream can be reconstructed without error.We investigate the fundamental limits of this approach to data embedding by analyzing the characteristics of the original data stream that facilitate data embedding, by studying which techniques allow the highest data rates to be embedded, and by examining the tradeoffs between embedded data rate and errors in the embedded data. This approach to data embedding offers the possibility of expanding the delivered data rate of many existing telecommunications links, both wired and wireless, without changing allocated bandwidths.

信息隐藏的领域包括隐身，其中隐藏在另一个数据流中的消息以及水印，其中所有权数据包含在要保护的数字对象中。信息隐藏的第三个字段是数据嵌入的字段，其中通过键并扭曲（稍微）将原始对象扭曲（稍微）将其他信息纳入传输数据流中。没有密钥，就无法重建嵌入式信息。我们根据类型和通用接收器设计的方法提出了一种全新的数据嵌入方法。在我们的方法中，使用类型方法将新的数据序列嵌入原始数据流中，并使用基于类型的通用接收器提取嵌入式数据。嵌入式数据的类型和速率选择是基于对原始数据流的部分的分析。通用接收器仅从接收到的数据中学习类型，因此，没有像以前的数据嵌入技术那样的侧面信息。嵌入过程和接收器均为数据自适应，因此可以在没有错误的情况下重建原始数据流。我们通过分析嵌入数据嵌入的基本限制，通过分析原始数据流的特征，通过研究嵌入数据的特征，通过研究哪些技术允许嵌入最高数据速率，并在嵌入数据速率和嵌入数据速率之间进行嵌入数据率，并确定数据速率和杂货。这种数据嵌入方法提供了扩大许多现有电信链接的数据速率，无论是有线和无线的，而无需更改分配的带宽。