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This paper is concerned with the iteration identification algorithm for Hammerstein model with complex-valued input for the fact that the existing algorithms are not valid for complex input. Based on the stochastic gradient algorithm, the extended stochastic gradient algorithm is proposed by defining new cost function for complex input. The extended hierarchical multi-innovation stochastic gradient...
As compared to uncoded unitary space-time modulation (USTM), channel coded USTM has received increased attention for its large coding gain. However, low-density parity-check (LDPC) coded USTM has only received limited attention. This paper proposes a scheme of combining LDPC code with USTM for noncoherent MIMO communication system over Rayleigh flat fading and additive white Gaussian noise (AWGN)...
For improving the precision of the fingerprint positioning algorithm based on WIFI and decreasing the complexity of the algorithm at the same time, this paper proposed a KNN + Bayes fusion positioning algorithm based on subsection and interpolation. In the process of building fingerprint library, we use the method of linear interpolation to get the fingerprint which is in the middle of adjacent sampling...
Block diagonalization (BD) is a well-known linear precoding scheme for multi-user multiple-input multiple-output (MU-MIMO) downlink transmission. BD precoding achieves good performance but results in high computational complexity overheads due to two singular value decomposition (SVD) operations for each user. By replacing the first SVD operation with a less complex solution, the QR decomposition...
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