Leakage Subspace Precoding and Scheduling for Physical Layer Security in Multi-User XL-MIMO Systems

Gonzalo J. Anaya-Lopez, Jose P. Gonzalez-Coma, F. Javier Lopez-Martinez

We investigate the achievable secrecy sum-rate in a multi-user XL-MIMO system, on which user distances to the base station become comparable to the antenna array dimensions. We sho…