# IEEE Transactions on Communications

## Issue 2 • Feb. 2018

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## Filter Results

Displaying Results 1 - 25 of 36

Publication Year: 2018, Page(s):C1 - C4
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• ### IEEE Communications Society

Publication Year: 2018, Page(s): C2
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• ### Revisiting Error Analysis in Convolutionally Coded Systems: The Irregular Constellation Case

Publication Year: 2018, Page(s):465 - 477
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There has been a rejuvenated interest in the use of non-equally spaced (irregular) constellations after promising performance results were demonstrated compared with the conventional lattice constellations. This paper investigates the use of the irregular constellations in convolutionally coded systems. To enable the use of such irregular constellations in the presence of convolutional encoders, w... View full abstract»

• ### On the Design of Multi-Dimensional Irregular Repeat-Accumulate Lattice Codes

Publication Year: 2018, Page(s):478 - 492
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Most multi-dimensional (more than two dimensions) lattice partitions only form additive quotient groups and lack multiplication operations. This prevents us from constructing lattice codes based on multi-dimensional lattice partitions directly from non-binary linear codes over finite fields. In this paper, we design lattice codes from Construction A lattices where the underlying linear codes are n... View full abstract»

• ### Circular Buffer Rate-Matched Polar Codes

Publication Year: 2018, Page(s):493 - 506
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A practical rate-matching system for constructing rate-compatible polar codes is proposed. The proposed polar code circular buffer rate-matching is suitable for transmissions on communication channels that support hybrid automatic repeat request communications, as well as for flexible resource-element rate-matching on single transmission channels. Our proposed circular buffer rate matching scheme ... View full abstract»

• ### LDPC Code Design for Distributed Storage: Balancing Repair Bandwidth, Reliability, and Storage Overhead

Publication Year: 2018, Page(s):507 - 520
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Distributed storage systems suffer from significant repair traffic generated due to the frequent storage node failures. This paper shows that properly designed low-density parity-check (LDPC) codes can substantially reduce the amount of required block downloads for repair thanks to the sparse nature of their factor graph representation. In particular, with a careful construction of the factor grap... View full abstract»

• ### A New Construction and an Efficient Decoding Method for Rabin-Like Codes

Publication Year: 2018, Page(s):521 - 533
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Array codes have been widely used in communication and storage systems. To reduce computational complexity, one important property of the array codes is that only exclusive OR operations are used in the encoding and decoding processes. Cauchy Reed–Solomon codes, Rabin-like codes, and circulant Cauchy codes are existing Cauchy maximum-distance separable (MDS) array codes that employ Cauchy m... View full abstract»

• ### An Improved Energy Detector for Mobile Cognitive Users Over Generalized Fading Channels

Publication Year: 2018, Page(s):534 - 545
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A cooperative cognitive radio network (CRN) with improved energy detection-based spectrum sensing is analyzed in various fading scenarios. Generalized multipath (Nakagami- $m$ ) fading and enriched multipath (Nakagami- $q$ ) fading models are considered alon... View full abstract»

• ### Secrecy Performance of Transmit Antenna Selection for MIMO Relay Systems With Outdated CSI

Publication Year: 2018, Page(s):546 - 559
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This paper investigates secure cooperative transmissions in a dual-hop MIMO relay system using a combined transmit antenna selection (TAS) and maximal-ratio combining (MRC) scheme over the Nakagami- $m$ fading channels, where an adaptive decode-and-forward relaying protocol and an multi-antenna eavesdropper are considered. Due... View full abstract»

• ### Exploiting Full/Half-Duplex User Relaying in NOMA Systems

Publication Year: 2018, Page(s):560 - 575
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In this paper, a novel cooperative non-orthogonal multiple access (NOMA) system is proposed, where one near user is employed as decode-and-forward relaying switching between full-duplex (FD) and half-duplex (HD) mode to help a far user. Two representative cooperative relaying scenarios are investigated insightfully. The first scenario is that no direct link exists between the base... View full abstract»

• ### Joint Relay Beamforming and Receiver Processing for Multi-Way Multi-Antenna Relay Networks

Publication Year: 2018, Page(s):576 - 588
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We consider a multi-way relay network with multiple users exchanging information with each other via a multi-antenna relay. The multi-way relaying strategy consists of one multiple access phase and multiple broadcast phases. We jointly design relay beamforming matrices and users’ linear processing receivers in the broadcast phases to maximize the minimum signal-to-interference-and-noise rat... View full abstract»

• ### Performance Analysis of Millimeter-Wave Relaying: Impacts of Beamwidth and Self-Interference

Publication Year: 2018, Page(s):589 - 600
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We study the maximum achievable rate of a two-hop amplified-and-forward (AF) relaying millimeter-wave (mm-wave) system, where two AF relaying schemes, i.e., half-duplex (HD) and full-duplex (FD) are discussed. By considering the two-ray mm-wave channel and the Gaussian-type directional antenna, jointly, the impacts of the beamwidth and the self-interference coefficient on maximum achievable rates ... View full abstract»

• ### Capacity of Energy Harvesting Binary Symmetric Channels With a $(sigma ,rho )$ -Power Constraint

Publication Year: 2018, Page(s):601 - 614
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Capacity of energy harvesting communications with deterministic energy arrival and finite battery size is investigated. An abstraction of the physical layer is considered, where binary sequences are transmitted through a binary symmetric channel, and a cost function is associated with the transmission of each symbol. Upper and lower bounds on the channel capacity are derived for the general case b... View full abstract»

• ### When Does Output Feedback Enlarge the Capacity of the Interference Channel?

Publication Year: 2018, Page(s):615 - 628
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In this paper, the benefits of channel-output feedback in the Gaussian interference channel (G-IC) are studied under the effect of additive Gaussian noise. Using a linear deterministic (LD) model, the signal to noise ratios (SNRs) in the feedback links beyond which feedback plays a significant role in terms of increasing the individual rates or the sum-rate are approximated. The relevance of this ... View full abstract»

• ### On the Capacity of the AWGN Channel With Additive Radar Interference

Publication Year: 2018, Page(s):629 - 643
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This paper investigates the capacity of a communications channel that, in addition to additive white Gaussian noise, also suffers from interference caused by a co-existing radar transmission. The radar interference (of short duty-cycle and of much wider bandwidth than the intended communication signal) is modeled as an additive term whose amplitude is known and constant, but whose phase is indepen... View full abstract»

• ### Secure Broadcasting Using Independent Secret Keys

Publication Year: 2018, Page(s):644 - 661
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The problem of secure broadcasting with independent secret keys is studied. The particular scenario is analyzed in which a common message has to be broadcast to two legitimate receivers, while keeping an external eavesdropper ignorant of it. The transmitter shares independent secret keys of sufficiently high rates with both legitimate receivers, which can be used in different ways: they can be use... View full abstract»

• ### Hybridly Connected Structure for Hybrid Beamforming in mmWave Massive MIMO Systems

Publication Year: 2018, Page(s):662 - 674
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In this paper, we propose a hybridly connected structure for hybrid beamforming in millimeter-wave (mmWave) massive MIMO systems, where the antenna arrays at the transmitter and receiver consist of multiple sub-arrays, each of which connects to multiple radio frequency (RF) chains, and each RF chain connects to all the antennas corresponding to the sub-array. In this structure, through successive ... View full abstract»

• ### Dynamic Small Cell Clustering and Non-Cooperative Game-Based Precoding Design for Two-Tier Heterogeneous Networks With Massive MIMO

Publication Year: 2018, Page(s):675 - 687
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In this paper, we investigate the dynamic small cell (SC) clustering strategy and their precoding design problem for interference coordination in two-tier heterogeneous networks (HetNets) with massive MIMO (mMIMO). To reduce interference among different SCs, an interference graph-based dynamic SC clustering scheme is proposed. Based on this, we formulate an optimization problem as design precoding... View full abstract»

• ### On Detection and Mitigation of Reused Pilots in Massive MIMO Systems

Publication Year: 2018, Page(s):688 - 699
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In a time-division duplex multiple antenna system the channel state information (CSI) can be estimated using reverse training. In multi-cell multi-user massive MIMO systems, pilot contamination degrades CSI estimation performance and adversely affects massive MIMO system performance. In this paper we consider a subspace-based semi-blind approach where we have training data as well as information b... View full abstract»

• ### Blind Signal Detection in Massive MIMO: Exploiting the Channel Sparsity

Publication Year: 2018, Page(s):700 - 712
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In practical massive MIMO systems, a substantial portion of system resources are consumed to acquire channel state information (CSI), leading to a drastically lower system capacity compared with the ideal case, where perfect CSI is available. In this paper, we show that the overhead for CSI acquisition can be largely compensated by the potential gain due to the sparsity of the massive MIMO channel... View full abstract»

• ### Sequential and Global Likelihood Ascent Search-Based Detection in Large MIMO Systems

Publication Year: 2018, Page(s):713 - 725
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Neighborhood search algorithms have been proposed for low complexity detection in large/massive multiple-input multiple-output systems. They iteratively search for the vector, which minimizes the maximum likelihood (ML) cost in a fixed neighborhood. However, the ML solution may not lie in the searched space and also the search may go through a large number of intermediate vectors. Motivated by thi... View full abstract»

• ### Design of 5G Full Dimension Massive MIMO Systems

Publication Year: 2018, Page(s):726 - 740
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This paper discusses full-dimension multiple-input-multiple-output (FD-MIMO) technology, which is currently an active area of research and standardization in wireless communications for evolution toward Fifth Generation (5G) cellular systems. FD-MIMO utilizes an active antenna system (AAS) with a 2-D planar array structure that not only allows a large number of antenna elements to be packed within... View full abstract»

• ### Reconfigurable Hybrid Beamforming for Dual-Polarized mmWave MIMO Channels: Stochastic Channel Modeling and Architectural Adaptation Methods

Publication Year: 2018, Page(s):741 - 755
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A reconfigurable hybrid beamforming (HBF) system is presented to dynamically exploit the channel diversities and antenna array directivity in millimeter wave (mmWave) channels. To develop an effective method for HBF architecture adaptation in wideband mmWave channels, the performance of an architecture is evaluated based on its average frequency-domain channel capacity. According to our analysis a... View full abstract»

• ### Triangular Constellations for Adaptive Modulation

Publication Year: 2018, Page(s):756 - 766
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Adaptive modulation is widely employed to improve spectral efficiency. To date, square signal constellations have been used with adaptive modulation. In this paper, triangular constellations are considered for this purpose. Triangle quadrature amplitude modulation (TQAM) for both power-of-two and non-power-of-two modulation orders is examined. A technique for TQAM mapping is presented which is bet... View full abstract»

• ### Robust MISO Beamforming With Cooperative Jamming for Secure Transmission From Perspectives of QoS and Secrecy Rate

Publication Year: 2018, Page(s):767 - 780
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Robust quality-of-service (QoS)-based and secrecy rate-based secure transmission designs are investigated for a multiple-input single-output system with multiple eavesdroppers and a cooperative jammer. Two scenarios are considered: (a) eavesdroppers’ channel state information (ECSI) is available and (b) ECSI is unavailable. In scenario (a), a QoS-based design is considered to minimize the w... View full abstract»

## Aims & Scope

IEEE Transactions on Communications focuses on all telecommunications including telephone, telegraphy, facsimile, and point-to-point television by electromagnetic propagation.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Naofal Al-Dhahir
University of Texas at Dallas