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By combining the polarized modulation and the spatial modulation technique, dual-polarized spatial modulation (DPSM) has been recently proposed for MIMO transmission to improve the spectral efficiency and reduce the space occupancy. The performance of DPSM over correlated Rayleigh and Rice fading channels has been studied, showing that DPSM technique outperforms uni-polarized SM technique. For a general...
The channel factors during signal propagation from the satellite to moving user terminal (UT) is comprehensively analyzed. Then an algorithm is presented to model dual-polarized MIMO LMS channel, which investigates almost all channel factors including temporal and polarization correlation, line-of-sight (LOS) shadowing, multipath effect, cross-polar discrimination (XPD) of antennas, cross-polar coupling...
The sum rate performance of distributed multiple-input multiple-output (D-MIMO) systems with Zero-Forcing (ZF) receivers over semi-correlated K fading channels involves special functions, which hinders us to further manipulations. To solve this issue, we derive the closed-form expressions of the achievable sum rate by using moment matching method, which is achieved by using a Gamma distribution to...
In this paper, we analyze uplink sum rate of multiple-input multiple-output (MIMO) systems with maximum-ratio combining (MRC) receivers. To be practical, receive correlation and different powers of users are assumed. Two novel approximate results on sum rate are derived in closed form. Based on the results, we also obtain the asymptotic results on sum rate when the number of base station antenna (M)...
This paper presents outdoor wideband small-scale spatial fading and autocorrelation measurements and results in the 73 GHz millimeter-wave (mmWave) band conducted in downtown Brooklyn, New York. Both directional and omnidirectional receiver (RX) antennas are studied. Two pairs of transmitter (TX) and RX locations were tested with one line-of-sight (LOS) and one non-line-of-sight (NLOS) environment,...
This paper proposes a normalized belief with the aid of node selection (NS) method in Gaussian belief propagation (GaBP) detection especially for a large multiuser multiple-input multiple-output (MU-MIMO) configurations in bands below 6 GHz. GaBP is known as an efficient detector regarding low computational complexity as well as high detection capability only if the BS has hundreds of receive antennas...
Signal estimation and its performance has always remained a challenge for wireless communication society. New techniques were developed for channel diversity and spectrum utilization. In this paper a new estimation approach based on Kalman state stabilization is proposed min-max, to achieve the objective of higher performance in MIMO system, using time variant interference modeling. A generic approach...
Massive multiple-input multiple-output (MIMO) as a promising air interface technology refers to the idea of equipping cellular base stations (BSs) with a huge number of antenna elements. Massive MIMO technology allows for orders of magnitude enhancement in spectral and energy efficiency requirement demanded by the fifth generation (5G) wireless communications. Accurate channel models that reflect...
This paper studies the ergodic capacity of multiple-input multiple-output (MIMO) correlated Gamma-Gamma (G-G) fading channels, particularly for free-space optical communications (FSO). Based on the atmospheric fading correlation analysis and by employing an approximation method for the sum of correlated (G-G) random variables (RVs), closed-form expressions for the capacity are derived for both equal...
In this paper, orthogonal space time block coding (OSTBC) in multiple input multiple output (MIMO) systems is employed. The considered channel is the triply selective fading channel (the spatially correlated obeying Kronecker model, time varying and frequency selective). The precoded OSTBC probability of error over triply selective Rayleigh fading channels is investigated for phase shift keying/quadrature-amplitude...
In this paper a new interference mitigation scheme with resource control is proposed, to achieve the objective of higher performance in MIMO system, using interference conditions. A generic approach for both coordinated and randomized multi-user access strategies for interference mitigation is proposed. The suggestive analytical framework develops the correlation of fading channel over the space-frequency...
A three-dimensional (3D) channel model for multiple-input multiple-output (MIMO) mobile communication system including field patterns of mutually uncoupled separated antennas is proposed. The model utilizes both geometrical and stochastic properties of propagation environment to describe fading correlation and simulate channel coefficients behavior over space and time. This approach gives more degrees...
This paper discusses multi-probe anechoic chamber setups for evaluating MIMO capable terminals with emphasis on generating spatial channel models. The multi-probe anechoic chamber method is a promising method for over the air testing. The reason can be attributed to its potential for enabling evaluating MIMO terminals in realistic propagation environments. The focus of the paper is on investigating...
In integrated mobile satellite systems (MSSs) with ancillary terrestrial component (ATC), seamless handoff techniques will be fundamental for allowing users to switch between the space segment and the terrestrial component. On the other hand, introducing multiple-input multiple-output (MIMO) antenna technology in next-generation MSS-ATC systems promises the well-known advantages related to the MIMO...
This paper analyzes the performance of full-duplex (FD) relaying with multiple-antenna amplify-and-forward (AF) relay. The system performance due to practical wireless transmission impairments of spatial fading correlation, cross-correlation due to correlated links is investigated. To this end, new exact closed-form expressions for the ergodic capacity are derived in the case of arbitrary correlations...
This paper analyzes the performance of full-duplex relaying (FDR) with multiple-antenna amplify-and-forward (AF) relay. The system performance due to practical wireless transmission impairments of spatial fading correlation and imperfect channel state information (CSI) is investigated. To this end, new exact closed-form expressions for the outage probability are derived, where the case of arbitrary,...
In this paper, we analyze multiple-input multiple-output quadrature spatial modulation (QSM-MIMO) systems that operate under imperfect channel information over correlated α-μ fading channels. A simple and closed-form expression for the pairwise error probability (PEP) is provided. Based on the obtained PEP, a closed-form upper bound expression for the average bit error probability (BEP) is obtained...
This paper presents a 3-D statistical channel model of the impulse response with small-scale spatially correlated random coefficients for multi-element transmitter and receiver antenna arrays, derived using the physically-based time cluster - spatial lobe (TCSL) clustering scheme. The small-scale properties of multipath amplitudes are modeled based on 28 GHz outdoor millimeter-wave small-scale local...
This paper presents the results of a dual polarized multiple-input-multiple-output (MIMO) channel measurements, investigating a land mobile satellite (LMS) pedestrian scenario in an urban environment. The channel characterization considers the downlink from a fixed elevated position, emulating a satellite, to a mobile terminal, incorporating line-of-sight (LOS) and non-line-of-sight (NLOS) conditions,...
This paper proposes an open-loop correlation reduction precoding scheme for overloaded multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. In overloaded MIMO-OFDM systems, frequency diversity through joint maximum likelihood (ML) decoding suppresses performance degradation owing to spatial signal multiplexing. However, on a line-of-sight (LOS) channel,...
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