Performance Analysis of OSPR Against Eavesdropping in MIMO

In the world of mobile communication, the an- ticipation surrounding 5G technology is palpable, particularly with the advent of massively multiple input multiple outputs (MIMO) systems. However, the security of uplink transmissions in such systems is a pressing concern, especially with the potential threat of multi-antenna eavesdroppers. To address this, a novel approach called OSPR (original symbol phase rotation) has been proposed. This technique involves the base station randomly altering the phase of data symbols before transmission, making it difficult for eavesdroppers to decipher the original information. While authorized users can decode these phase rotations, unau- thorized users struggle to do so, ensuring heightened security. Simulation results affirm the efficacy of OSPR, showcasing its potential as a robust and secure transmission technology for mobile networks. Moreover, the impact of antenna density on key performance metrics like signal-to-noise ratio is also investigated, shedding light on the feasibility and reliability of OSPR in practical scenarios.