水印鲁棒性:纠错编码有效吗?。
Robustness of Watermarking: Is Error Correcting Coding Effective?
第四章介绍了水印的纠错编码和随机置乱技术。
In chapter four, I introduced the technology of ECC and random permutation.
当采用前向纠错编码时,扩频系统多址容量会明显提高。
The multiple access capacity increases greatly when coded systems are used.
纠错编码方法和装置,数据传输方法,接收方法和接收机。
Error correction encoding method and apparatus, data transmission method, receiving method and receiver.
针对石油测井中可靠性的要求,本文提出了一种纠错编码的设计方案。
To satisfy the requirement of reliability in petroleum well logging, this paper proposes an error-correcting coding scheme based on product codes.
在介绍纠错编码原理的基础上,着重介绍了用软件实现汉明码的基本思想。
At the foundation of correct error code principle, thought of realizing Hamming code with software is introduced emphatically.
LDPC码是一种特殊的具有稀疏校验矩阵的纠错编码,其性能逼近香农限。
Low density parity check (LDPC) code, which is a special case of error correction code with sparse parity-check matrix, has the performance very close to the Shannon Limit.
由于在现代通信中,RS码作为外码成为标准的纠错编码单元,用途十分广泛。
In modern communication, RS code has turned into standard error correcting and coding unit as outer code, and become widely used.
分析了隐写系统和隐写分析的基本原理,提出了一种新的隐写载体—纠错编码。
In this paper, basic principle of steganographic systems was analyzed, then a new steganographic cover -error -correction code was presented.
这个算法是用了纠错编码技术和排序处理技术,提高了鲁棒性,改进了检测方法。
It USES error correction code and sort processing technique, which enhance the robustness and advance detection method.
通过实际测试数据,验证了纠错编码的有效性,为提高数据传输的质量奠定了基础。
The validity of the error correcting the encoding is testified by practical testing data, which take a foundation for improving the quality of data transmitting.
根据小波域量化噪声自适应地确定嵌入强度,并结合纠错编码,提高了抗攻击能力。
The strength of the embedded watermark is image-adaptive according to the wavelets quantization noise, and combined with the error-correct code, it improved the characteristic to anti-attack.
量子纠错编码作为其中的一种量子编码方案,是量子通信和量子计算实用化的基础。
As a kind of quantum coding scheme, quantum error-correction coding is the foundation of realization of quantum communication and quantum computation.
为了保证视频质量,可以采用前向纠错编码(FEC)来提高视频数据传输的可靠性。
For guaranteeing video quality, FEC (Forward Error Correction) can be adopted to improve the reliability of video data transmission.
为进一步增强算法的鲁棒性,还使用了BCH纠错编码技术、冗余嵌入和数组重组技术。
To further enhance the robustness, BCH error correction coding techniques, redundant embedding, and an array of recombinant techniques are used.
为了实现实时可靠通信,LTE的纠错编码要求具有:复杂度低、码字随机性好等特点。
Such high data rate makes it challenging for channel coding design. The error correction coding for LTE should involve both the characteristics of low decoding complexity and good performance.
ALC协议采用发送方分多个组播通道发送数据,通过前向纠错编码来保证数据的可靠性。
ALC protocol sends data through many multicast tunnels and undertakes data reliable by forward error correction (FEC).
为了满足多种业务和高数据率的需求,“B3G”系统方案采用了LDPC码作为纠错编码。
In order to satisfy the need in a variety of services and the high data rate, LDPC code is used for channel code in the B3G-system.
采用SP交织算法、纠错编码,给出了一种基于图像的抗突发误码的大容量数据嵌入隐秘传输方法。
By using SP algorithm and error correction code technology, a combating burst error and large capacity data hiding method for secret transmission was proposed based on images.
目前量子纠错编码理论已日趋完善,许多经典的编码技术在量子领域中都可以找到相应的编码方法。
So far, the theory of quantum error-correction coding has become more and more perfect. Many corresponding methods of classical coding techniques have been found in quantum field.
纠错编码技术可以提高光码分多址系统的频谱效率,并可以抑制频谱效率随码长的增加而减小的特性。
Error correction coding is used to increase the spectral efficiency, and it can avoid the spectral decrease with the increase of the length.
最后,对误比特率的数值结果进行了分析,并提出了采用纠错编码的方法来改善AJES系统的可靠性。
Finally, numerical results of BER are analysed and implementation of error correcting coding is presented to improve the reliability of the AJES system.
该模型依照资源预定协议,并采用混合差错控制方式,将前向纠错编码技术加以完善,增加了重传机制。
This transport model improves forward error correction-coding technology with adding a retransmission function in it. This model bases on both resource reservation protocol and hybrid error control.
利用这一模型,分析了包长、纠错编码方式的选取以及竞争窗口长度等重要参数的选取对系统性能的影响。
Using this model, we analyzed the influence of some important parameters, such as packet size, forward error correction coding scheme and contention window size, to the system performance.
BCH纠错编码是线性分组码的一种,有较好的纠错能力,信息隐藏是近年来信息安全领域出现的新技术。
BCH codes are a subset of the class of linear block codes that have good error correction capability. Information hiding is a new technique in information security field.
提出了一种在图像小波域中嵌入文字的新型鲁棒水印算法,并对嵌入的文字进行混沌加密和BCH纠错编码。
This paper brings forward a text embedding digital watermarking method based on image's DWT domain, meanwhile, using the chaotic sequences to encrypt the text data and BCH code to correct them.
在现代通信中,常常使用纠错编码技术来提高系统性能,其中卷积码由于其出色的纠错性能而得到了广泛使用。
In modern communication, Error-Correcting Codes are often used to improve the system performance, among which the convolutional code is adopted widely because of its excellent capability.
结合激光唱片记录信息形成过程,对音频数字处理系统。音频纠错编码及EFM调制技术等原理做了分析、探讨。
According to the formed CD recording information, the principle of digital processing system, audio error correcting code and EFM technology is analyzed and explored.
提出了一种改进的复合型水印嵌入方法,引入了通信中的纠错编码技术,在很大程度上增强了鲁棒水印的鲁棒性。
Then error correction coding method is presented and discussed in detail to overcome the disadvantage, so the performance of the communication system is greatly improved.
分析了铁路调车系统中存在的各种干扰以及干扰产生的原因,并提出了解决外界干扰的方法和采用的纠错编码方式。
The paper analyzes the disturbs and causes exist in railway shunting system. The solutions of external disturbance and error correcting codes are proposed.
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