IEEE Transactions on Communications

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Displaying Results 1 - 25 of 33

Publication Year: 2016, Page(s):C1 - C4
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• IEEE Communications Society

Publication Year: 2016, Page(s): C2
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• Optimized Design of Finite-Length Separable Circulant-Based Spatially-Coupled Codes: An Absorbing Set-Based Analysis

Publication Year: 2016, Page(s):4029 - 4043
Cited by:  Papers (4)
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In this paper, we characterize the finite-length performance of separable circulant-based spatially-coupled (SCB-SC) LDPC codes for transmission over the additive white Gaussian noise channel. For a general class of finite-length graph-based codes, it is known that the existence of small absorbing sets causes a performance degradation in the error floor regime. We first present the mathematical co... View full abstract»

• A New Density Evolution Approximation for LDPC and Multi-Edge Type LDPC Codes

Publication Year: 2016, Page(s):4044 - 4056
Cited by:  Papers (1)
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This paper considers density evolution for low-density parity-check (LDPC) and multi-edge type LDPC (MET-LDPC) codes over the binary input additive white Gaussian noise channel. We first analyze three single-parameter Gaussian approximations for density evolution and discuss their accuracy under several conditions, namely, at low rates, with punctured and degree-one variable nodes. We observe that... View full abstract»

• Anytime Characteristics of Protograph-Based LDPC Convolutional Codes

Publication Year: 2016, Page(s):4057 - 4069
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Anytime transmission has been shown to be an effective means of stabilizing an unstable system over noisy channels. A crucial issue in implementing anytime transmission strategies is the design of anytime codes that offer good finite-length performance and asymptotic anytime properties. This paper introduces an efficient anytime code derived from protograph-based low-density parity-check convoluti... View full abstract»

• Reduced Complexity Sum-Product Algorithm for Decoding Nonlinear Network Codes and In-Network Function Computation

Publication Year: 2016, Page(s):4070 - 4082
Cited by:  Papers (1)
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While the capacity, feasibility, and methods to obtain codes for network coding problems are well studied, the decoding procedure and complexity have not garnered much attention. In this paper, we pose the decoding problem at a sink node in a network as a marginalize product function (MPF) problem over the Boolean semiring and use the sum product (SP) algorithm on a suitably constructed factor gra... View full abstract»

• Data Rate Fairness Cooperative Beamforming Techniques for Cognitive Radio Systems in the Presence of Asynchronous Interferences

Publication Year: 2016, Page(s):4083 - 4096
Cited by:  Papers (1)
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In this paper, we develop a data rate fairness optimal cooperative beamforming technique for a cognitive radio system with multiple secondary receivers (SRs) and multiple primary receivers (PRs) in the presence of asynchronous interferences. In particular, the data rate fairness beamforming design is formulated as an optimization problem to maximize the minimum data rate of the SRs subject to tran... View full abstract»

• On Stable Throughput of Cognitive Radio Networks With Cooperating Secondary Users

Publication Year: 2016, Page(s):4097 - 4110
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In this paper, we study cooperative cognitive radio networks consisting of a primary user (PU) and multiple secondary users (SUs). SUs transmit only when PU is sensed as silent and may interfere with primary transmission due to imperfect sensing. When primary activity is sensed correctly, SUs cooperate with PU by assisting retransmission of failed packets of PU. We analyze packet throughput of PU ... View full abstract»

• Precoder Design and Power Allocation for MIMO Cognitive Radio Two-Way Relaying Systems

Publication Year: 2016, Page(s):4111 - 4120
Cited by:  Papers (2)
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In this paper, we study a multiple-antenna two-way relaying (TWR) cognitive radio (CR) system. A space alignment (SA) technique is adopted by the secondary users (SUs) to avoid interference with the primary users (PUs). We derive the optimal power allocation that maximizes the TWR achievable SU sum-rate while respecting the total power budget and the relay power constraints. We also analyze the ca... View full abstract»

• Distributed Optimization of Channel Access Strategies in Reactive Cognitive Networks

Publication Year: 2016, Page(s):4121 - 4133
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In reactive cognitive networks, the channel access and the transmission decisions of the cognitive terminals have a long-term effect on the network dynamics. When multiple cognitive terminals coexist, the optimization and implementation of their strategy is challenging and may require considerable coordination overhead. In this paper, such challenge is addressed by a novel framework for the distri... View full abstract»

• Massive Multiway Relay Networks Applying Coded Random Access

Publication Year: 2016, Page(s):4134 - 4146
Cited by:  Papers (7)
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This paper considers full data exchange for massive uncoordinated multiway relay networks (mu-mRN) applying coded random access for flexible topology changes and capable of serving massive number of users. We aim to maximize the normalized throughput of the mu-mRN using the multiuser detection (MUD) technique with MUD capability of K > 1. Specifically, our goal is multiple times improvement, i.... View full abstract»

• Joint Transceiver Design Algorithms for Multiuser MISO Relay Systems With Energy Harvesting

Publication Year: 2016, Page(s):4147 - 4164
Cited by:  Papers (4)
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In this paper, we investigate a multiuser multiple-input single-output relay system with simultaneous wireless information and power transfer, where the received signal is divided into two parts for information decoding and energy harvesting (EH), respectively. Assuming that both base station (BS) and relay station (RS) are equipped with multiple antennas, we study the joint transceiver design pro... View full abstract»

• Achievable Sum DoF of the ${K}$ -User MIMO Interference Channel With Delayed CSIT

Publication Year: 2016, Page(s):4165 - 4180
Cited by:  Papers (1)
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This paper considers a K-user multiple-input multiple-output (MIMO) interference channel (IC) where 1) the channel state information obtained by the transmitters (CSIT) is completely outdated and 2) the number of transmit antennas at each transmitter, i.e., M is greater than the number of receive antennas at each user, i.e., N. The usefulness of the delayed CSIT was first identified in a K-phase r... View full abstract»

• Wireless Power Transfer in Massive MIMO-Aided HetNets With User Association

Publication Year: 2016, Page(s):4181 - 4195
Cited by:  Papers (5)
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This paper explores the potential of wireless power transfer (WPT) in massive multiple-input multiple-output (MIMO)-aided heterogeneous networks (HetNets), where massive MIMO is applied in the macrocells, and users aim to harvest as much energy as possible and reduce the uplink path loss for enhancing their information transfer. By addressing the impact of massive MIMO on the user association, we ... View full abstract»

• Linear Precoding Gain for Large MIMO Configurations With QAM and Reduced Complexity

Publication Year: 2016, Page(s):4196 - 4208
Cited by:  Papers (1)
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In this paper, the problem of designing a linear precoder for multiple-input multiple-output (MIMO) systems in conjunction with quadrature amplitude modulation (QAM) is addressed. First, a novel and efficient methodology to evaluate the input-output mutual information for a general MIMO system as well as its corresponding gradients is presented, based on the Gauss-Hermite quadrature rule. Then, th... View full abstract»

• On the Sublinear Behavior of Massive Multi-User MIMO Sum-Rates for Deterministic Channel Models

Publication Year: 2016, Page(s):4209 - 4223
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This paper studies the behavior of the sum-rate of outdoor multi-user multiple input multiple output systems, where a uniform linear array is utilized at the base station (BS), as the number of BS antennas and the number of users increase. Two schemes are studied for the downlink, the zero-forcing and the maximum ratio transmission (MRT). To begin with, the channel matrix is described deterministi... View full abstract»

• Approximate Joint MAP Detection of Co-Channel Signals in Non-Gaussian Noise

Publication Year: 2016, Page(s):4224 - 4237
Cited by:  Papers (1)
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Detection of co-channel signals is important as wireless communication systems become increasingly dense. A particularly challenging case is single antenna reception in both the presence of inter-symbol interference and co-channel interference. Optimal joint maximum a posteriori probability (MAP) detection of the co-channel signals is prohibitively complex. Therefore, in this paper, we propose a f... View full abstract»

• Channel Estimation for Diffusive Molecular Communications

Publication Year: 2016, Page(s):4238 - 4252
Cited by:  Papers (6)
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In molecular communication (MC) systems, the expected number of molecules observed at the receiver over time after the instantaneous release of molecules by the transmitter is referred to as the channel impulse response (CIR). Knowledge of the CIR is needed for the design of detection and equalization schemes. In this paper, we present a training-based CIR estimation framework for MC systems, whic... View full abstract»

• Energy Efficiency of Hybrid-ARQ Under Statistical Queuing Constraints

Publication Year: 2016, Page(s):4253 - 4267
Cited by:  Papers (4)
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In this paper, energy efficiency of hybrid automatic repeat request (HARQ) schemes with statistical queuing constraints is studied for both constant-rate and random Markov arrivals by characterizing the minimum energy per bit and wideband slope. In particular, two queuing models are considered. Specifically, when outage occurs, the transmitter keeps the packet, lowers its priority, and attempts to... View full abstract»

Publication Year: 2016, Page(s):4268 - 4282
Cited by:  Papers (10)
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The incorporation of dynamic voltage scaling technology into computation offloading offers more flexibilities for mobile edge computing. In this paper, we investigate partial computation offloading by jointly optimizing the computational speed of smart mobile device (SMD), transmit power of SMD, and offloading ratio with two system design objectives: energy consumption of SMD minimization (ECM) an... View full abstract»

• Secure Collaborative Spectrum Sensing: A Peer-Prediction Method

Publication Year: 2016, Page(s):4283 - 4294
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Collaborative spectrum sensing is an effective method to improve detection rates in cognitive radio networks. However, it is vulnerable to spectrum sensing data falsification (SSDF) attacks when malicious secondary users (SUs) report fraudulent sensing data. In order to improve the robustness, numerous attack prevention schemes have been proposed to identify malicious SUs. Nevertheless, most of th... View full abstract»

• Confidential Multicasting Assisted by Multi-Hop Multi-Antenna DF Relays in the Presence of Multiple Eavesdroppers

Publication Year: 2016, Page(s):4295 - 4304
Cited by:  Papers (5)
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In this paper, we consider confidential multicasting in multi-hop multi-antenna decode-and-forward (DF) relay networks, where a source sends a secure common message to multiple destinations in the presence of multiple eavesdroppers with the help of a multi-antenna DF relay located at each hop. Under an overall power constraint, we first show that the optimization problem for relay beamformer desig... View full abstract»

• Analysis on Tailed Distributed Arithmetic Codes for Uniform Binary Sources

Publication Year: 2016, Page(s):4305 - 4319
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Distributed arithmetic coding (DAC) is a variant of AC that can realize Slepian-Wolf coding in a nonlinear way. In our previous work, we defined codebook cardinality spectrum (CCS) and Hamming distance spectrum (HDS) for DAC. In this paper, we make use of CCS and HDS to analyze tailed DAC, which is a form of DAC that, as traditional AC, maps the last few symbols of each source block onto non-overl... View full abstract»

• Novel 16-QAM and 64-QAM Near-Complementary Sequences With Low PMEPR in OFDM Systems

Publication Year: 2016, Page(s):4320 - 4330
Cited by:  Papers (1)
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In this paper, we first propose a novel construction of 16-quadrature amplitude modulation (QAM) near-complementary sequences with low peak-to-mean envelope power ratio (PMEPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed 16-QAM near-complementary sequences can be constructed by utilizing novel nonlinear offsets, where the length of the sequences is n = 2m.... View full abstract»

Publication Year: 2016, Page(s):4331 - 4345
Cited by:  Papers (3)
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Generalized frequency division multiplexing (GFDM) is a recent multicarrier 5G waveform candidate with the flexibility of pulse shaping filters. However, the flexibility of choosing a pulse shaping filter may result in intercarrier interference (ICI) and intersymbol interference (ISI), which becomes more severe in a broadband channel. In order to eliminate the ISI and ICI, based on discrete Gabor ... 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.

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Meet Our Editors

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