Jointly optimized echo state network for short-term channel state information prediction of fading channel
Accurately obtaining channel state information (CSI) in wireless systems is significant but challenging. This paper focuses the technique of machine-learning-based channel estimation. In particular, a jointly optimized echo state network (JOESN) is proposed to form a concept of the CSI prediction which is made up of two interacting aspects of output weight regularization and initial parameter optimization. First, in order to enhance noise robustness, a sparse regression based on L2 regularization is employed to finely learn the output weights of ESN. Second, vital reservoir parameters (i.e., global scaling factor, reservoir size, scaling coefficient and sparsity degree) are learned by a linear-weighted particle swarm optimization (LWPSO) for further improve the prediction accuracy and reliability. The experiments about computational complexity and three evaluating metrics are carried out on two chaotic benchmarks and one real-world dataset. The analyzed results indicate that the JOESN performs promisingly on multivariate chaotic time series prediction.
Published in2020 International Wireless Communications and Mobile Computing, IWCMC 2020
RelationsSchool of Physics, Engineering & Computer Science
MetadataShow full item record
Showing items related by title, author, creator and subject.
Benham, C.D.; Davis, J.B.; Randall, A.D. (2002)
Pilot-aided channel estimation and performance of ASTC-MIMO-OFDM system in a correlated Rayleigh frequency-selective channel Sun, Y.; Delestre, F.; Bannour, A.; Ammari, M.L.; Bouallegue, R. (IEEE, 2011-01-01)Algebraic Space-Time Codes (ASTC) for MIMO systems are based on quaternion algebras. Thanks to their algebraic construction, the ASTC codes are full-rank, full-rate and have the non-vanishing determinant property. These ...
Slope–channel coupling between pipes, gullies and tributary channels in the Mocatán catchment badlands, Southeast Spain Faulkner, H.; Alexander, R.; Zukowskyj, P. (2008)The dispersive nature of the highly sodic silts of the Triassic-rich unit of the Góchar formation plays a fundamental role in the erosion of the Mocatán catchment badlands in Almería, where a rejuvenating pipe and incised ...