On the Duality between MIMO Systems with Distributed Antennas and MIMO Systems with Colocated Antennas

On the Duality between MIMO Systems with Distributed Antennas and MIMO Systems with Colocated Antennas

Multiple-input multiple-output (MIMO) systems are known to offer huge advantages over single-antenna systems, both with regard to capacity and error performance. Usually, quite restrictive assumptions are made in the literature on MIMO systems concerning the spacing of the individual antenna elements. On the one hand, it is typically assumed that the antenna elements at transmitter and receiver...

MIMO Systems with Distributed Transmit Antennas Analysis

This paper analyzes a differential en/decoding scheme for multiple input multiple-output for usage in communication links with two distributed transmit antennas and one receive antenna, in which neither the transmitter nor the receiver know channel characteristics. Analyzed scheme is simulated and results are presents for the scenario of two transmit antennas one receive antenna. It will be sho...

Smart Antennas, MIMO systems and Related Technologies

Reconfigurable Antennas in mmWave MIMO Systems

The key obstacle to achieving the full potential of the millimeter wave (mmWave) band has been the poor propagation characteristics of wireless signals in this band. One approach to overcome this issue is to use antennas that can support higher gains while providing beam adaptability and diversity, i.e., reconfigurable antennas. In this article, we present a new architecture for mmWave multiple...

Antenna Selection for MIMO Systems with Closely Spaced Antennas

Physical size limitations in user equipment may force multiple antennas to be spaced closely, and this generates a considerable amount of mutual coupling between antenna elements whose effect cannot be neglected. Thus, the design and deployment of antenna selection schemes appropriate for next generation wireless standards such as 3GPP long term evolution (LTE) and LTE advanced needs to take th...