Future mobile networks are converging toward heterogeneous multitier networks, where
macro-, pico-, and femtocells are randomly deployed based on user demand. A popular …

This paper quantifies the benefits and limitations of cooperative communications by
providing a statistical analysis of the downlink in network multiple-input multiple-output …

Flexible time division duplex (TDD) is expected to be one of the key technologies for 5G
flexible air interface. The main benefit of flexible TDD is to allow for better radio resource …

In this work, we consider cloud RAN architecture and focus on the downlink of an antenna
domain (AD) exposed to external interference from neighboring ADs. With system sum-rate …

The ultra-dense radio access network (RAN) consisting of a large number of distributed
antennas and user terminals is considered to improve link capacity and coverage while …

Heterogeneous Cloud Radio Access Networks (H-CRANs) are a promising cost-effective
architecture for 5G system which incorporates the cloud computing into Heterogeneous …

We present schemes for acquiring the null space of the interference channel between a
User Equipment (UE) and an interfering Base Station Group (BSG) in Cooperative Multi …

Cloud Radio Access Network (CRAN) is a promising network architecture for 5G to address
the increasing demand for mobile data traffic. We consider a joint beamforming and …

Ultra dense networks are a promising technology enabling high power and spectrum
efficiencies in future wireless systems. It is well-known that for ultra dense networks inter-cell …

Interference Alignment (IA) has emerged as a promising interference coordination approach
for cooperative MIMO systems. Due to heavy CSI feedback overhead, APs (Access Points) …