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In this paper, we propose a new space-time modulation scheme using quadrature amplitude modulation division for a two-user massive multiple-input multiple-output (MIMO) uplink system, in which channel state information (CSI) is unavailable at both the transmitter and the receiver. It is proved that our proposed transmission scheme enables both the large scale channel coefficients and the transmitted...
In this paper, we consider the design of multi-users space-time modulation (MUSTM) for an uplink MIMO system with one base station equipped with the massive number of antennas and N single-antenna users, where it is assumed that only large scale channel coefficients are available at both the transmitter and the receiver. For such a system, a novel concept called uniquely factorable (UF) MUSTM is introduced...
Every channel can be expressed as a convex combination of deterministic channels with each deterministic channel corresponding to one particular intrinsic state. Such convex combinations are in general not unique, each giving rise to a specific intrinsic-state distribution. In this paper we study the maximum and the minimum capacities of a channel when the realization of its intrinsic state is causally...
In this paper, we consider retrieving individual wave components in a multi-directional sea wave model. To solve this problem, a currently and commonly used method is three-dimensional fast Fourier transform (3D FFT), which is based on the uniform frequency and the uniform wave number in wave number frequency domain. However, these uniformly sampling properties do not normally strictly satisfy the...
Both spectrum efficiency and energy efficiency are two critical issues in the design of wireless communication networks. Energy harvesting cognitive radio networks have been recently proposed to attempt to solve both the issues simultaneously. In this paper, we consider a cognitive radio network in which the secondary transmitter equipped with an energy harvesting device is allowed to opportunistically...
In this paper, we consider a cooperative cognitive radio relay network (CCRRN), in which there is a pair of primary transmitter (PT) and primary receiver (PR) with each having a single antenna, a secondary transmitter (ST) equipped with two antennas and a secondary receiver (SR) having a single antenna. We assume that ST operates in a half-duplex mode with an amplify-and-forward (AF) cooperative transmission...
We propose to use the power spectral density (PSD) matrices of the received signals of a multi-sensor system as the feature of processing. PSD matrices have structural constraints and they form a manifold in signal space. We introduce two new Riemannian distance (RD) measures on the PSD matrix manifold and developed algorithms to locate the means and medians of PSD matrices in terms of these RD. These...
For any binary-input channel with perfect state information at the decoder, if the mutual information between the noisy state observation at the encoder and the true channel state is below a positive threshold determined solely by the state distribution, then the capacity is the same as that with no encoder side information. A complementary phenomenon is revealed for a similarly defined quantity.
This paper investigates the design of optimal space signaling for an intensity modulated direct detection multi-input-multi-output optical wireless communication system with independent and non-identically log-normal distributed channel coefficients. In order to optimize both large-scale diversity and small-scale diversity gains with a maximum likelihood detector, the design problem is formulated...
In this paper, we propose the design of a uniquely factorable hexagonal constellation for a noncoherent wireless communication system with a single transmitter antenna and multiple receiver antennas (SIMO). The hexagonal constellation has a densely packed two dimensional "honeycomb" structure and is more energy-efficient than the commonly used cross quadrature amplitude modulation (QAM)...
A novel energy-efficient unitary space-time block code (STBC) design using the recently-developed uniquely-factorable constellation pair (UFCP) concept and the QR decomposition is proposed for a noncoherent wireless communication system equipped with two transmitter antennas and a single receiver antenna. It is proved that the proposed UFCP-STBC design assures that the unique identification of both...
In this paper, we consider the optimal design of linear space codes for an indoor multiple input multiple output (MIMO) visible light communication (VLC) system with maximum-likelihood (ML) detection, where we assume that the full knowledge of channel state information (CSI) is available at both the transmitter and the receiver. For such a system with on-off-keying (OOK) modulation, an optimal closed-form...
In this paper, we consider correlated multiple-antenna communication systems having M transmitter antennas and N receiver antennas (M ≤ N) with a zero-forcing (ZF) decision-feedback (DF) detector. We assume that the full knowledge of channel state information is available at the receiver and only the first- and the second-order channel statistics are known at the transmitter. By scaling up the antenna...
In this paper, a joint relay selection and resource allocation scheme is proposed for simultaneous wireless information and power transfer (SWIPT) relay networks with multiple Source nodes (SNs) and Destination nodes (DNs) pairs and energy harvesting Relay nodes (RNs). The transmit power, subchannel, power splitting ratio allocation for SNs/RNs and the relay selection scheme strategy are jointly optimized...
In this paper, we consider a multiple-input-multiple-output optical wireless communication (MIMO-OWC) system suffering from log-normal fading. In this scenario, a general criterion for the design of full large-scale diversity space code (FLDSC) with the maximum likelihood (ML) detector is developed. Based on our criterion, FLDSC is attained if and only if all the entries of the space coding matrix...
This paper considers the asymptotic analysis of symbol error probability (SEP) for either optimally precoded or uniformly precoded large correlated MIMO fading channels using the zero-forcing (ZF) detector. For such systems, we reveal some very nice structures which naturally lead us to the exploration of two very strong and very useful mathematical tools for the systematic study of asymptotic behaviors...
We consider the problem of narrow-band signal detection in a passive sonar environment. The classical method employs a fast Fourier Transform (FFT) delay-sum beamformer in which the feature used in detection is the output of the FFT spectrum analyser in each frequency bin. This is compared to a locally estimated mean noise power to establish a likelihood ratio test (LRT). In this paper, we suggest...
The multiple-input and multiple-output (MIMO) channel model is very useful for the presentation of a wide range of wireless communication systems. This paper addresses the joint design of a precoder and a receiver for a point-to-point MIMO channel model in a scenario in which perfect channel state information (CSI) is available at both ends. We develop a novel framework for the dual transmission-reception...
Mutual interference is the main bottleneck on the throughput of large random spectrum sharing networks. This work examines the extent to which the performance of such networks can be improved by employing multiple transmitting antennas, without degrading the average performance of individual users. By extending partial zero-forcing beamforming to spectrum sharing networks, the aggregate interference...
In this paper, a novel distributed concatenated Alamouti code is devised for a one-way relaying network consisting of two end nodes with each having a single antenna and one relay node equipped with two antennas. With the aid of the newly developed uniquely-factorable constellation pair (UFCP) generated from square quadrature amplitude modulation (QAM) constellation and by jointly processing the noisy...
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