Micro diversity MIMO system with MMSE and ZF receiver

Nowadays, performance results for MMSE/ZF receivers are well known for microdiversity systems. Diversity antennas at the base station communicate with distributed users. Both transmit and receive antennas can be used as a macro diversity multiple input multiple output (MIMO) system. So, we can cover large area when compared to the existing micro diversity MIMO system. In multiuser system, the users communicate with a distributed receive array. It having minimum mean squared error (MMSE) or zero forcing (ZF). When the antennas are distributed, different average signal to noise ratio (SNRs) are diversity where the differences is in the order of shorter than the wavelength.