Channel models are important tools to evaluate the performance of new concepts in mobile
communications. However, there is a tradeoff between complexity and accuracy. In this …

This paper presents an overview of the theory and currently known techniques for multi-cell
MIMO (multiple input multiple output) cooperation in wireless networks. In dense networks …

Coordinated multipoint or cooperative MIMO is one of the promising concepts to improve cell
edge user data rate and spectral efficiency beyond what is possible with MIMOOFDM in the …

Coordinated multi-point (CoMP) is a new class of transmission schemes for interference
reduction in the next generation of mobile networks. We have implemented and tested a …

It is common to use channel models such as the 3GPP spatial channel model (SCM), the
WINNER model or ray tracing to evaluate multiple-antenna multiple-user techniques in …

The tremendous growth of mobile data traffic will lead to substantial architectural changes in
wireless networks. New wireless systems need to exploit all available degrees of freedom in …

We report on field trials using CoMP transmission in the downlink of a mobile radio network.
Two new features enable over-the-air CoMP transmission from physically separated base …

To solve error propagation and exorbitant computational complexity of signal detection in
wireless multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO …

Cooperative communication techniques are envisioned as an integral part of nextgeneration
wireless networks. Cooperative communication is based on extending the interactions …

This paper investigates interference coordination for 3-dimension (3D) antenna array
systems in multicell multiple-input multiple-output (MIMO) and orthogonal frequency division …