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Intelligent reflecting surface (IRS)-is a 2D surface with a programmable structure and is composed of many arrays that are used to control the propagation of electromagnetic waves by changing the electric and magnetic properties of the 2D surface. IRS can influentially convert wireless channels to enhance the spectral efficiency (SE) and all other communication performance of wireless systems very cost-effectively. In this paper, proposed an IRS-assisted Bi-directional long short-term memory (BiLSTM) model-based SE measurement under a Wiener filter in a multi-user MISO downlink environment. In the offline training phase, the BiLSTM model is trained with an IRS-assisted MISO simulation dataset and achieves optimal training accuracy. In the online deployment, the proposed system gained satisfactory SE performance with different signal-to-noise ratio values compared to other schemes. So, the proposed …