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压缩传感是一个从2006年左右开始兴起的研究领域,它关注于如何采样信号,也就是信号的采样方式或者压缩方式。通过设计一种特殊的采样方案,可以使得采样频率降低为信号的“信息率”,而不是传统的奈奎斯特采样率,于是,实际的采样率可以大大低于奈奎斯特频率,却只损失很少的信息量,依然保持了充足的信息量足以恢复出采样前的原始信号。这个研究思想挑战了奈奎斯特频率的理论极限,会对整个信号处理领域产生极其深远的影响,同时,信号处理的许多应用领域也会随之发生根本性的发展和变化。 -Compressive sensing (CS) is an emerging fi eld based on the revelation that a small collection of linear projections of a sparse signal contains enough information for sta- ble, sub-Nyquist signal acquisition. When a statistical characterization of the signal is available, Bayesian inference can complement conventional CS methods based on linear programming or greedy algorithms. We perform approximate Bayesian infer- ence using belief propagation (BP) decoding, which represents the CS encoding matrix as a graphical model. Fast encoding and decoding is provided using sparse encoding matrices, which also improve BP convergence by reducing the presence of loops in the graph. To decode a length-N signal containing K large coeffi cients, our CS-BP decoding algorithm uses O(K log(N)) measurements and O(N log2 (N)) computation. Finally, sparse encoding matrices and the CS-BP decoding algorithm can be modifi ed to support a variety of signal models and measurement noi
Date : 2025-07-11 Size : 234kb User : romman

在选定的数字基带通信系统中,设计应用分组线性纠错编码,提高系统的可靠性。在发送端利用单片机编程,产生n级(n建议取3) m序列,作为汉明码编码器的输入;同样,在发送端单片机中,编程实现对m序列的纠错编码;接收端利用单片机,编程实现汉明码译码,并还原输出m序列。-The selected digital baseband communication systems, the design application packet linear error-correcting codes, to improve system reliability. In the sending end the use of microcontroller programming, producing n-(n recommended to take 3) m sequence, as the Hamming code encoder input Similarly, in the sending end microcontroller, the programming sequence of the m error-correcting codes the receiving end the use of microcontroller, Programming hamming decoding, and to restore the output of m sequences.
Date : 2025-07-11 Size : 23kb User : weiwei

文章Decoding by Linear Programming实现源代码-Article Decoding by Linear Programming implementation source code
Date : 2025-07-11 Size : 13.76mb User : yjj

LP的构造,通过线性规划译码来构造一个码字,使用线性规划译码算法进行译码。-The structure of the LP, decoding by linear programming to construct a code word, using linear programming decoding algorithm to decode.
Date : 2025-07-11 Size : 414kb User : liyajuan

MIMO系统线性规划的 译码算法,其中译码运用软判决方式进行-MIMO decoding algorithm for linear programming system, including the use of soft-decision decoding way
Date : 2025-07-11 Size : 1kb User : douer

Linear Programming Decoding
Date : 2025-07-11 Size : 272kb User : LSK
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