Abstract
Channel estimation is a significant constraint for the communication system. The channel estimation in wireless communication systems is carried out by adopting distinct approaches. In addition to this, the more important techniques are Minimum Mean Square Error (MMSE), and Least Square (LS). Here, the LS process for estimating the channels is simpler, but it gets high error regarding Mean Square Error (MSE). On contrary to that, the efficiency of MMSE is more when evaluating with LS with Signal-To-Noise Ratio (SNR). It also has high computational complexity. Therefore, the integration of LS and MMSE approaches are used for receiving the exact signal and reducing the error rate through evolutionary programming. Moreover, the Invariable Step-Size Zero-Attracting Normalized Least Mean Square (ISS-ZA-NLMS) methodology has been adopted for exploiting the channel sparsity in Adaptive Sparse Channel Estimation (ASCE). On the other hand, ISS-ZA-NLMS faces inefficiency in performance in terms of a lack of good trade-off between the computational cost and convergence rate. Hence, the main scope of this research is to estimate a new channel estimation technique in broadband wireless communication systems with the help of a hybridized optimization algorithm. Here, the development of Hybrid Heuristic-based ISS-ZA-NLMS (HH-ISS-NLMS) is the main contribution that could enhance the ASCE. The integrated algorithm Tunicate Swarm-Deer Hunting Optimization (TS-DHO) is proposed for efficiently estimating the channels. The objective function of the advanced method is derived concerning MSE. Finally, results show that the channel estimation by the offered HH-ISS-NLMS algorithm estimated with the other traditional approaches shows enhanced performance in terms of MSE.
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Iniyavan, R., Vijayalakshmi, B. A novel channel estimation model for broadband wireless communication system using hybrid heuristic-based invariable step-size zero-attracting NLMS algorithm. Int J Intell Robot Appl 7, 370–384 (2023). https://doi.org/10.1007/s41315-022-00251-1
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DOI: https://doi.org/10.1007/s41315-022-00251-1