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In this paper, we propose an optimized schedule called IRMP (Improved Row Message Passing) schedule, based on analysis of the existing message passing schedules. This type of schedule has changed the message updating order between variable and check nodes. In accordance with this schedule, an improved BP-Based decoding algorithm is proposed. Simulations show that, this algorithm has beaten the performance...
Generally, a complete process of Dot and Box game contains three section, including former stage, middle stage and later stage. According to an analysis result based on chains' data which is gotten from a reasonable calculation method, the state of victory or defeat can be judged during the transition from former stage to middle stage. In addition, profit in the process can be gotten simultaneously...
The singular values are important invariant features in singular value decomposition (SVD) method for autonomous star identification. This paper theoretically analyzes the inherent relationship between the star vectors in field of view (FOV) and the eigenvalues of the Hermitian matrix formed by star vectors, which is performed as an equivalent study on singular values of the star vector matrix. Firstly,...
A star identification algorithm Based on finite automata is proposed in this paper. Firstly, each star is characterized by a well-defined pattern that can be determined by its surrounding stars and generated with a virtual circle. Then, the star pattern is coded into strings and a guide catalog is also constructed according to the generating process of the star pattern. Finally, a string matching...
This paper gives a channel coding solution which meets the national standards of mobile multimedia broadcasting, the result of simulation shows that QC-LDPC has a good performance while the signals with a extremely low SNR transmitted in AWGN channel. According to the standards, it analyzes the method of implementing the QC-LDPC with FPGA. For the specialty of the quasi-cycle coding matrix, it adopt...
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