Analysis of Virtual MIMO-Based Cooperative Communication in Femtocell Networks

Femtocells, as known as home base stations, are destined to be an effective approach that mobile operators build their cellular networks and grow their coverage and capacity. They are small and inexpensive, and transmit at such low power, that they are meant to be placed in individual homes and backhauled in order to deliver a high-quality service to the users at home and at work. However, the transmissions in the existing schemes for the femtocell are easy to be interfered by the ambient noise. In this paper, we propose a new model with virtual multiple input and multiple output (VMIMO) technology that introduces cooperative communication between the different users in a femtocell network. In this model, the legal users in the femtocell network not only can effectively reduce interference via the cooperation, but also they can maximize the data throughput by multi-path effects. The analytical results match very well with the simulation results. Simulation results also indicate that the proposed scheme has the better outage and capacity performance, compared with traditional femtocell models.