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This paper proposes a novel channel tracking method based on radial basis function neural network (RBFNN) and particle filter (PF) in multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) system. First, we use the RBFNN to obtain the initial values of the MIMO channels, and then apply the PF method to track the variation of the channels. The fading channels are modeled...
A new estimation method by the swarm intelligent optimization algorithm is presented to recover the transmitted data bits and code of spread spectrum signal over additive white Gaussian noise channel, while the receiver has no knowledge of the transmitter spreading sequence, only knows the length of spreading sequence. The presented estimation method by Artificial Fish Swarm Algorithm (AFSA) is insensitive...
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