一种基于过完备字典对的高码率信号获取方法

• Format: Patent
• Language: Chinese
• Published: 14.04.2020
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

本发明涉及信号处理领域，具体涉及一种基于过完备字典对的高码率信号获取方法，通过训练信号集来学习用于高码率信号获取的过完备字典对，该字典对包括低码率部分和高码率部分，根据训练得到的过完备字典对中的低码率部分对待处理的信号进行分解，从而得到一组稀疏表示向量，再根据得到的稀疏表示向量，结合过完备字典对中的高码率部分，计算得到与待处理的低码率信号相对应的高码率信号。本发明的技术方案新颖，结构明确，容易实施。 The present invention belongs to the signal processing field and relates to a method for acquiring high-bit-rate signals based on an over-complete dictionary pair. According to the method, an over-complete dictionary pair used for high-bit-rate signal acquisition is learnt through a training signal set; the dictionary pair includes a low-bit-rate part and a high bit-rate part; signals to be processed are decomposed through the low-bit-rate part in the over-complete dictionary pair which is obtained through training, so that a group of sparse representation vectors can be obtained; and calculation is performed according to the obtained sparse representation vectors and on the basis of the high bit-rate part in the dictionary pair, so that high-bit-rate signals corresponding to the low-bit-rate signals to be proc