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In generalised spatial modulation (GenSM) systems, the total number of active antenna groups is always not a power of two, which leaves room for designing an active antenna group (AAG) selection algorithm to achieve the constellation shaping gain and to improve the symbol error rate (SER). In this paper, based on uniform-cost search, a novel iterative AAG selection algorithm for GenSM systems is proposed...
The power transfer efficiency and coil offset degree are two key indicators in wireless charging system of electric vehicles. In order to achieve the maximum offset degree under the premise of meeting a certain transfer efficiency, an optimal design method of resonator is proposed based on real value genetic algorithm (GA). According to the Biot-Savart theorem, an algebraic mutual inductance expression...
Towards to the utilization optimization problem of a flexible flow shop equipment with time window constraints, this paper proposed an information entropy-based adaptive CGA algorithm to solve the problem, and constructed the flexible flow shop production scheduling model with time window constraints. Global optimization procedure used adaptive CGA optimization algorithm, and simultaneously optimized...
This paper presents a FPGA (Field Programmable Gate Array)-based remotely sensed imagery denoising method, named FPGA-based median filtering. The proposed method is capable of processing large volume data since it takes full advantages of FPGA hardware and abundant logic units. This paper first overviews the traditional median filtering algorithm, and then highlights the FPGA-based filtering, including...
A data fusion approach based on eigenvalues and eigenvectors of relation matrix of multi-sensor is proposed. Features of relation matrix are extracted and the information of relation matrix is fully utilized by eigenvalues and eigenvectors of relation matrix. This approach overcomes the problem of influenced by expert experience in threshold settings by the optimal sensor group selected through fusion...
We propose a new transmission scheme for MEMO Y channel by combining the antenna selection algorithm with signal space alignment and network coding strategy. This strategy works with more relaxed constraint between M and N. The average symbol error rate of the transmission scheme is analyzed for the multiple-access phase and the broadcast phase respectively. We show that the proposed scheme can provide...
In order to improve the security of chaotic encryption algorithm, a modified chaotic map, which is based on the Logistic map, is proposed in this paper. Compared with original logistic map, the proposed map makes it always be chaotic, and expands the iteration range from original (0, 1) to (0, 4?) (??0.25). We designed an encryption scheme based on the proposed map for implementing image encryption...
In order to improve the security of the private information in memorizer, an encryption algorithm, which inherits the advantages of chaotic encryption, stream cipher and AES algorithm, is proposed in this paper. We design and realize an encryption system based on the algorithm on ARM(S3C6410), which can encrypt and decrypt the information in many kinds of memorizers, such as UDisk, SD card and mobile...
Based on the relaying scheme which permits the relay node to jointly encode the data information from two source nodes, a new network low density parity check (NLDPC) code is designed for the Rayleigh fading channel. Since the log-likelihood ratio (LLR) of the signal received from the fading channel is not a Gaussian random variable, the Gaussian Approximation algorithm cannot be employed directly...
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