Description: 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 Platform: |
Size: 239616 |
Author:romman |
Hits:
Description: 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. Platform: |
Size: 23552 |
Author:weiwei |
Hits:
Description: 文章Decoding by Linear Programming实现源代码-Article Decoding by Linear Programming implementation source code Platform: |
Size: 14427136 |
Author:yjj |
Hits:
Description: 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. Platform: |
Size: 423936 |
Author:liyajuan |
Hits:
Description: 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 Platform: |
Size: 1024 |
Author:douer |
Hits:
Search - Linear programming decoding