Abstract-This paper analyzes the spectral efficiency of massive multiple-input multiple-output (MIMO) systems in both centralized and distributed configurations, referred to as C-MIMO and D-MIMO, respectively. By accounting for real environmental parameters and antenna characteristics, namely, path loss, shadowing effect, multi-path fading and antenna correlation, a novel comprehensive channel model is first proposed in closedform, which is applicable to both types of MIMO schemes. Then, based on the proposed model, the asymptotic behavior of the spectral efficiency of the MIMO channel under both the centralized and distributed configurations is analyzed and compared in exact forms, by exploiting the theory of very long random vectors. Afterwards, a case study is performed by applying the obtained results into MIMO networks with circular coverage. In such a case, it is attested that for the D-MIMO of cell radius rc and circular antenna array of radius ra, the optimal value of ra that maximizes the average spectral efficiency is accurately established by r
The SE of centralized and distributed massive MIMO systems were respectively analyzed and compared REF .
Spectral-Efficiency Analysis of Massive MIMO Systems in Centralized and Distributed Schemes
IEEE Transactions on Communications
IEEE Transactions on Communications
Computer Science Mathematics