The complexity of next generation wireless systems is growing exponentially. The combination of Multiple-Input Multiple-Output (MIMO) technology with Orthogonal Frequency Division Multiplexing (OFDM) is considered as the best solution to provide high data rates under frequency-selective fading channels. The design and evaluation of MIMO-OFDM systems require a detailed analysis of a number of fu...

Massive multiple-input multiple-output (MIMO) is seen as an enabling technology to fulfill dramatic improvements in spectral efficiency for 5G deployment in 2020. For massive MIMO systems, the learning loop from early stage prototype design to final stage performance validation, is expected to be slow and ineffective. There is a strong need to evaluate massive MIMO base station (BS) performance...

Multiple Input, Multiple Output (MIMO) technology offers the potential for a significant increase in capacity and performance within a given bandwidth and power budget. However, these benefits must be weighed against the cost of the multiple RF front ends and additional processing necessary in supporting MIMO systems. The creation of a cost effective MIMO system can be facilitated through the u...

Digital communication using multiple-input multiple-output (MIMO) wireless links has recently emerged as one of the most significant technical breakthroughs in modern communications. This thesis presents an overview of some important theoretical concepts of MIMO systems. After describing the basic ideas of MIMO transmissions in the introduction, we mainly focused on information theoretical conc...

This study presents the analysis of a constellation partition (CP) algorithm for multiple-input multiple-output– maximum-likelihood detection (MIMO–MLD) systems. The authors consider an Nt by Nr MIMO system, where MLD algorithm is employed at the receiver side for MIMO signal detection. The authors show that for the case of orthogonal space-time block codes and MIMO beamforming (MIMO-BF) system...

We would like to welcome you to the Special Issue on Recent Advances in Multiuser MIMO Systems of the EURASIP Journal on Wireless Communications and Networking (JWCN). This issue has collected several research results on various aspects of multiuser MIMO systems including resource allocation, precoding and detection algorithms, limited feedback techniques and network MIMO. MIMO is a key technol...

In this paper we analyze multiple-input multiple-output (MIMO) free-space optical (FSO) communication systems with Q-ary pulse position modulation (PPM) and avalanche photodiodes (APDs) in the receiver array in the presence of atmospheric turbulence, and derive the general maximum-likelihood (ML) detection rule and the Chernoff bound on error probability (Pe) for the MIMO setup. The obtained an...

We investigate an iterative receiver with a linear detector for complex symbols to suppress the co-antenna interference introduced by a multiple input multiple output (MIMO) channel. For generalized MIMO systems, i.e., systems that transmit besides the pure data also complex conjugate repetitions, we show that the standard linear detector has to be replaced by a widely linear (WL) detector. The...

Low-cost and low-power sensor nodes forming Wireless Sensor Networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO – based structure has been proposed to offer enhanced energy savings in WSNs under certain circum...

─ MIMO systems have been gained great attention in the new generation of wireless communication systems. The capacity of a MIMO system is a function of the instantaneous MIMO channel. One way to manipulate the channel matrix is through the manipulation of the receive antenna correlation matrix. In this paper, the optimal receive antenna correlation matrix based on the maximization of the system...