Proposed a puncturing scheme for finite-length low density parity check code ( LDPC) codes. 提出了一种有限长低密度校验码(LDPC码)的打孔方案。
This paper researches distributed video coding performance based on n-nary Low Density Parity Check ( LDPC) code. 对基于多进制低密度奇偶校验(LDPC)码的分布式视频编码性能进行研究。
To improve the decoding performance of Low Density Parity Check ( LDPC) code, an efficient decoding algorithm based on min-sum algorithm is proposed. 针对低密度奇偶校验(LDPC)译码算法性能低的问题,提出一种基于最小和的高效译码算法。
An encoder architecture of low density parity check ( LDPC) code defined in DVB-S2 standard is proposed. 针对DVB-S2标准中的低密度奇偶校验(LDPC)码,提出了一种LDPC编码器设计结构。
Low-Density Parity Check ( LDPC) code has excellent performance and the complexity of its decoding algorithm is low. 低密度奇偶校验(Low-densityparitycheck)码以其卓越的性能、极低的解码复杂度,在通信领域正得到越来越多的关注。
By synthesizing the parity check and CRC-4, a synthetic error-tolerant technology which can correct 1 code bit and checkout 2 code bits error, 4 code bits error, 2.7% of all 3 code bits error is presented. 通过综合运用奇偶校验和CRC-4校验,提出一种综合容错技术,能够纠错1位和检错2位、检错4位、检错2.7%的3位码元错。
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. 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。
Firstly it is proved by simulation that the Low Density Parity Check ( LDPC) code has sound performance under block fading channel when decoded by general belief-propagation algorithm. 该文首先通过仿真证明了LDPC(LowDensityParityCheckcode)在分组衰落信道下,以通常的Belief-propagation算法译码,具有较好性能。
As to the error control and data correction, the parity check and hamming code check solutions are provided also to guarantee the reliability of data transmission and improve the anti-jamming capability of the system. 在差错控制和数据纠错方式上,也提供了奇偶校验和汉明码校验的解决办法,以保证数据传输的可靠性,提高系统的抗干扰能力。
A multidimensional parity check code for computer network 计算机网络用多维奇偶校验码
In the literary [ 1] held out a new channel estimation base on the non-real-time communication system. This estimator will use the relativity between each symbol, such as the parity check code construction. 在文献[1]中提出一种在非实时通信系统充分利用消息之间相关特性的新信道估计方法,这种方法中接收方需知道消息之间的结构,比如说纠错码结构。
Concerning the simplified method, this chapter analyzes the fixed-point error and gives the simulation result. The fifth chapter mostly concerns the decoding algorithm of Low-Density Parity Check code ( LDPC). 第五章则是针对低密度极性校验码(LDPC)的译码模块,给出了目前使用较多的四种译码算法,然后针对每一种译码算法分析了其定点误差,相应地给出了仿真性能曲线。
Based on rank distance codes, rank distance BCH codes are proposed, the form of parity check matrices of them are given and the condition that roots of generator polynomial must satisfy are discussed when the given rank distance BCH code is maximum rank distance BCH code. 本文基于秩距离码提出了秩距离BCH码,给出了其校验矩阵的形式,并讨论了所给秩距离BCH码为最大秩距离BCH码时,码的生成多项式的根应满足的条件。
Low density parity check ( LDPC) codes are shown to be one class of Shannon limit approaching codes. With advantages of high encoding gain, low decoding complexity and flexible code rates, etc. 低密度校验码(LDPC)性能接近香农限,具有编码增益高、译码简单快捷、码率灵活等优点,是当前编码界的研究热点。
Low density parity check ( LDPC) code is one of the best kinds of such codes, it is a block code with very excellent performance. 低密度奇偶校验(LDPC)码就是这些优秀码型中的一种,它是一种分组码,具有非常优异的性能。
Both Quadrature Amplitude Modulation ( QAM) and Low Density Parity Check Code ( LDPC) are widely used in such fields as wireless communication, wired television transmission and satellite communication. 正交幅度调制(QAM)和低密度奇偶校验码(LDPC)技术应用于很广泛的领域,如无线通信、有线电视传输、卫星通信等领域。
This paper focuses on the performance of LDPC ( Low Density Parity Check) code mainly, and a comprehensive comparative analysis with RS ( Reed-Solomon) codes is made. 本文重点对LDPC码的性能进行了深入的研究,并与RS(Reed-Solomon)码进行了全面的比较分析。
The contributions of this dissertation are summarized as follows: First, two kinds of measurement matrix based on low density parity check code ( LDPC) are proposed. 论文主要贡献有以下几个方面:第一,给出了基于低密度奇偶校验矩阵的确定性测量矩阵。
The watermark information is composed of authentication watermark bit, parity check code and watermark recovery. Watermark recovery is the chroma average value of subblocks of the corresponding mapping image. 水印信息由认证水印比特、奇偶校验码及恢复水印组成,恢复水印为对应映射图像块子块色度平均值。
Low Density Parity Check ( LDPC) code is a kind of channel coding scheme with strong error correction ability, whose performance is very close to Shannon Limit. LDPC码是一种性能非常接近shannon极限的信道编码方案,具有很强的纠错抗干扰能力。
LDPC ( Low Density Parity Check Code) was initially proposed by Gallager in his doctoral dissertation in 1962, and it is also called Gallager code. It is a kind of linear block error-correcting code that is represented by very sparse matrix. 低密度奇偶校验(LowDensityParityCheckcode,LDPC)码是Gallager于1962年在他的博士论文中首次提出的一种可以用非常稀疏的校验矩阵表示的线性分组纠错码,亦称Gallager码。
With the invention and successful of turbo code, Low Density Parity Check ( LDPC) code was rediscovered. Turbo码的发明并成功的应用使得低密度奇偶校验(LDPC)码重新被发现。