HU Xing-hua, SHI Ming-jie. Construction of sparse measurement matrix via tent chaotic sequence[J]. 2017, 36(7): 50-52+56. DOI: 10.13873/j.1000-9787(2017)07-0050-03.
Construction of measurement matrix is one of the important research content in compressed sensing( CS). Using characteristic of pseudo randomness
ergodicity of chaotic systems
propose a method for construction of the sparse measurement matrix based on tent chaotic sequence. The method for deterministic chaotic sequence generated by the system will be interval sampling
so that the sampled sequence meet statistical independence
by symbol function mapping generate pseudo-random sequence having sparsity
thereby construct measurement matrix of chaotic sparse. Simulation experiments results show that compared with Gaussian random matrices
sparse random matrix and Bernoulli random matrix
this proposed matrix has a similar reconstruction performance. The proposed measurement matrix is deterministic when parameter of chaotic system and initial value are fixed
its computation complexity is small and it is easy to be realized by hardware.