Design and implementation of an optimised stochastic vector precoder to improve the spectral efficiency in ultra-dense massive MIMO networks Online publication date: Thu, 01-Feb-2024
by R. Arshath Raja; B. Vijayalakshmi
International Journal of Mobile Network Design and Innovation (IJMNDI), Vol. 11, No. 1, 2024
Abstract: The need for low-complexity precoding and the fact that inter-user interference (IUI) lowers spectral efficiency (SE) at user terminals (UTs) make it even more important to find a solution that reduces IUI and increases SE. The research introduces an optimised stochastic vector precoder (OSVP) for uplink communication, which aims to enhance the SE of the mMIMO ultra dense network (UDN). OSVP leverages minimal CSI and employs the levy flight operator (LFO), while exponential evolutionary agents (EEA) employ signal perturbation within constellation bounds. OSVP utilises the LFO and EEA to locate perturbing signals within the lattice grid while adhering to constellation boundaries. The findings obtained through simulation demonstrate that the OSVP improves the SE within dense networks with a substantial number of transmit antennas. From the results, the OSVP has a higher SE, allowing for enhanced signal manipulation in UDN compared to existing state-of-the-art models.
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