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An efficient multi-rate encoder for IEEE 802.16e LDPC codes which outperforms current single rate encoders with acceptable hardware consumption and efficient memory consumption is proposed. This design utilizes the common dual-diagonal structure in parity matrices to avoid the inverse matrix operation which requires extensive computations. Parallel Matrix-vector multiplication (MVM) units, bidirectional...
A passive chipless Radio-frequency identification (RFID) tag is proposed based on the tailorable band-rejection property of the log-periodic (LP) antennas. The proposed tag principle is successfully demonstrated using full-wave simulations, where the absence and presence of the band-rejection in VSWR and thus radiation gain, is shown to carry the bit information. Due to the large number of dipole...
In this paper, we propose a new method to transmit one more information bit by using orthogonal Space-Time Block Codes (STBC) for 4 antennas. Using two different STBCs matrices transmit one additional bit to achieve high rate-9/8. To maintain full rank and full diversity for the coding gain matrix, a new STBC code with full rate and full diversity is proposed in this letter. In order to implement...
In this work, we propose a novel algorithm to combat We propose a novel transmission scheme, which divides a MPSK constellation into two labeled constellations to transmit one bit more information without requiring any additional system resource (power or bandwidth) by using orthogonal space-time block code (STBC). These two labeled constellations represent the information of this additional bit....
To solve the problem that it is difficult to construct an exact mathematic model for the electro-hydraulic position servo system of a pump-controlled cylinder with nonlinearity and time-varying property, HHGA-RBFNN is proposed. Each chromosome only contains three parameters including the number of hidden nodes, center and width of radial basis function; so that the complexity of proposed algorithm...
A discrete particle swarm optimization (DPSO) algorithm is presented for the assembly line balancing problem of type 1, ALBP-I. A new permutation encoding method is developed to make the particle correspond to a feasible operation sequence (FOS) which satisfies the precedence constrains of assembly tasks. A position based crossover operator for permutation encoding is unitized to update the particle...
In this paper, satellite imaging scheduling of cooperative multiple centers, an example of multi-agent systems, is discussed with a proposal of a novel Cooperative CoEvolutionary Planning Algorithm (CCEPA). Considering the numbers of the multi-center and the characteristics of targets to be observed, CCEPA decomposes the tasks into smaller components and evolves multiple solutions in the form of cooperative...
The paper has improved the coding system and analysis techniques of the FIAS which a typical quantitative analysis tool for classroom teaching by the modern information technology. It is also to indicate that the improved system would display various deeds and behaviors in teaching practice at a very clear, objective, comprehensive and quantitative level. The results of the research and the practice...
In this study, time and space efficiency of the double-array structure for large English & Chinese lexicons are comprehensively analyzed. Some important observations include: (1) both time and space efficiency are dependent of the different order of inserting the keys for Chinese lexicons, but neither for English ones; (2) on the condition that the order of inserting the keys is by characters’...
We present a SAX implementation of the statistical embedding associated with XML data, introduced in [1], [2], which allows to efficiently decide eps-validity to any DTD or Schema, for the Edit Distance with Moves. It associates a generalized k-gram to unranked labelled trees (with k = 1/epsiv) from which any regular property can be approximately decided. We show how to exactly compute the k-gram...
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