# IEEE Transactions on Communications

Includes the top 50 most frequently accessed documents for this publication according to the usage statistics for the month of

• ### Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems

Publication Year: 2013, Page(s):1436 - 1449
Cited by:  Papers (600)  |  Patents (1)
| | PDF (797 KB) | HTML

A multiplicity of autonomous terminals simultaneously transmits data streams to a compact array of antennas. The array uses imperfect channel-state information derived from transmitted pilots to extract the individual data streams. The power radiated by the terminals can be made inversely proportional to the square-root of the number of base station antennas with no reduction in performance. In co... View full abstract»

• ### Wideband Millimeter-Wave Propagation Measurements and Channel Models for Future Wireless Communication System Design

Publication Year: 2015, Page(s):3029 - 3056
Cited by:  Papers (113)
| | PDF (3761 KB) | HTML

The relatively unused millimeter-wave (mmWave) spectrum offers excellent opportunities to increase mobile capacity due to the enormous amount of available raw bandwidth. This paper presents experimental measurements and empirically-based propagation channel models for the 28, 38, 60, and 73 GHz mmWave bands, using a wideband sliding correlator channel sounder with steerable directional horn antenn... View full abstract»

• ### Offloading in Mobile Edge Computing: Task Allocation and Computational Frequency Scaling

Publication Year: 2017, Page(s):3571 - 3584
| | PDF (1686 KB) | HTML

In this paper, we propose an optimization framework of offloading from a single mobile device (MD) to multiple edge devices. We aim to minimize both total tasks' execution latency and the MD's energy consumption by jointly optimizing the task allocation decision and the MD's central process unit (CPU) frequency. This paper considers two cases for the MD, i.e., fixed CPU frequency and elastic CPU f... View full abstract»

• ### A Tractable Approach to Coverage and Rate in Cellular Networks

Publication Year: 2011, Page(s):3122 - 3134
Cited by:  Papers (979)  |  Patents (2)
| | PDF (563 KB) | HTML

Cellular networks are usually modeled by placing the base stations on a grid, with mobile users either randomly scattered or placed deterministically. These models have been used extensively but suffer from being both highly idealized and not very tractable, so complex system-level simulations are used to evaluate coverage/outage probability and rate. More tractable models have long been desirable... View full abstract»

• ### Joint Subchannel and Power Allocation for NOMA Enhanced D2D Communications

Publication Year: 2017, Page(s):5081 - 5094
| | PDF (1920 KB) | HTML

In this paper, a novel non-orthogonal multiple access (NOMA) enhanced device-to-device (D2D) communication scheme is considered. Our objective is to maximize the system sum rate by optimizing subchannel and power allocation. We propose a novel solution that jointly assigns subchannels to D2D groups and allocates power to receivers in each D2D group. For the subchannel assignment, a novel algorithm... View full abstract»

• ### Generalized Frequency Division Multiplexing for 5th Generation Cellular Networks

Publication Year: 2014, Page(s):3045 - 3061
Cited by:  Papers (128)  |  Patents (1)
| | PDF (2250 KB) | HTML

Cellular systems of the fourth generation (4G) have been optimized to provide high data rates and reliable coverage to mobile users. Cellular systems of the next generation will face more diverse application requirements: the demand for higher data rates exceeds 4G capabilities; battery-driven communication sensors need ultra-low power consumption; and control applications require very short respo... View full abstract»

• ### Modeling and Analyzing Millimeter Wave Cellular Systems

Publication Year: 2017, Page(s):403 - 430
Cited by:  Papers (2)
| | PDF (2603 KB) | HTML

We provide a comprehensive overview of mathematical models and analytical techniques for millimeter wave (mmWave) cellular systems. The two fundamental physical differences from conventional sub-6-GHz cellular systems are: 1) vulnerability to blocking and 2) the need for significant directionality at the transmitter and/or receiver, which is achieved through the use of large antenna arrays of smal... View full abstract»

• ### Design of Cooperative Non-Orthogonal Multicast Cognitive Multiple Access for 5G Systems: User Scheduling and Performance Analysis

Publication Year: 2017, Page(s):2641 - 2656
| | PDF (1382 KB) | HTML

Non-orthogonal multiple access (NOMA) is emerging as a promising, yet challenging, multiple access technology to improve spectrum utilization for the fifth generation (5G) wireless networks. In this paper, the application of NOMA to multicast cognitive radio networks (termed as MCR-NOMA) is investigated. A dynamic cooperative MCR-NOMA scheme is proposed, where the multicast secondary users serve a... View full abstract»

• ### Wireless Information and Power Transfer: Architecture Design and Rate-Energy Tradeoff

Publication Year: 2013, Page(s):4754 - 4767
Cited by:  Papers (420)
| | PDF (517 KB) | HTML

Simultaneous information and power transfer over the wireless channels potentially offers great convenience to mobile users. Yet practical receiver designs impose technical constraints on its hardware realization, as practical circuits for harvesting energy from radio signals are not yet able to decode the carried information directly. To make theoretical progress, we propose a general receiver op... View full abstract»

• ### Millimeter Wave Beamforming for Wireless Backhaul and Access in Small Cell Networks

Publication Year: 2013, Page(s):4391 - 4403
Cited by:  Papers (177)  |  Patents (2)
| | PDF (7361 KB) | HTML

Recently, there has been considerable interest in new tiered network cellular architectures, which would likely use many more cell sites than found today. Two major challenges will be i) providing backhaul to all of these cells and ii) finding efficient techniques to leverage higher frequency bands for mobile access and backhaul. This paper proposes the use of outdoor millimeter wave communication... View full abstract»

• ### Learning-Based Content Caching and Sharing for Wireless Networks

Publication Year: 2017, Page(s):4309 - 4324
| | PDF (2512 KB) | HTML

Content caching at base stations (BSs) is a promising technique for future wireless networks by reducing network traffic and alleviating server bottleneck. However, in practice, the content popularity distribution may change with spatio-temporal variation but be unknown for BSs, which is an intractable obstacle for efficient caching strategy design. In this paper, considering unknown popularity di... View full abstract»

• ### Performance Analysis of Non-Regenerative Massive-MIMO-NOMA Relay Systems for 5G

Publication Year: 2017, Page(s):4777 - 4790
| | PDF (1777 KB) | HTML

The non-regenerative massive multi-input-multi-output (MIMO) non-orthogonal multiple access (NOMA) relay systems are introduced in this paper. The NOMA is invoked with a superposition coding technique at the transmitter and successive interference cancellation (SIC) technique at the receiver. In addition, a maximum mean square error-SIC receiver design is adopted. With the aid of deterministic equ... View full abstract»

• ### Throughput Maximization for UAV-Enabled Mobile Relaying Systems

Publication Year: 2016, Page(s):4983 - 4996
Cited by:  Papers (4)
| | PDF (1342 KB) | HTML

In this paper, we consider a novel mobile relaying technique, where the relay nodes are mounted on unmanned aerial vehicles (UAVs) and hence are capable of moving at high speed. Compared with conventional static relaying, mobile relaying offers a new degree of freedom for performance enhancement via careful relay trajectory design. We study the throughput maximization problem in mobile relaying sy... View full abstract»

• ### Robust frequency and timing synchronization for OFDM

Publication Year: 1997, Page(s):1613 - 1621
Cited by:  Papers (1897)  |  Patents (173)
| | PDF (288 KB)

A rapid synchronization method is presented for an orthogonal frequency-division multiplexing (OFDM) system using either a continuous transmission or a burst operation over a frequency-selective channel. The presence of a signal can be detected upon the receipt of just one training sequence of two symbols. The start of the frame and the beginning of the symbol can be found, and carrier frequency o... View full abstract»

• ### Joint Rate and Power Allocation for NOMA With Statistical CSI

Publication Year: 2017, Page(s):4519 - 4528
| | PDF (770 KB) | HTML

Nonorthogonal multiple access (NOMA) can effectively improve the spectral efficiency by exploiting the power difference and employing successive interference cancellation (CSI) at receivers. In NOMA, the power allocation is crucial and can be performed with known CSI. It is also possible to carry out the power allocation with statistical CSI to meet target outage probabilities for given transmissi... View full abstract»

• ### Block Sparse Bayesian Learning-Based NB-IoT Interference Elimination in LTE-Advanced Systems

Publication Year: 2017, Page(s):4559 - 4571
| | PDF (1374 KB) | HTML

Narrowband Internet-of-Things (NB-IoT) is one of the emerging 5G technologies, but might introduce narrowband interference (NBI) to existing broadband systems, such as long-term evolution advanced (LTE-A) systems. Thus, the mitigation of the NB-IoT interference to LTE-A is an important issue for the harmonic coexistence and compatibility between 4G and 5G. In this paper, a newly emerged sparse app... View full abstract»

• ### Massive MIMO-Enabled Full-Duplex Cellular Networks

Publication Year: 2017, Page(s):4734 - 4750
| | PDF (1293 KB) | HTML

We provide a theoretical framework for the study of massive multiple-input multiple-output (MIMO)-enabled full-duplex (FD) cellular networks in which the residual self-interference (SI) channels follow the Rician distribution and other channels are Rayleigh distributed. In order to facilitate bi-directional wireless functionality, we adopt: 1) in the downlink (DL), a linear zero-forcing (ZF) with ... View full abstract»

• ### Spectral and Energy Efficiency of Uplink D2D Underlaid Massive MIMO Cellular Networks

Publication Year: 2017, Page(s):3780 - 3793
| | PDF (1525 KB) | HTML

One of the key 5G scenarios is that device-to-device (D2D) and massive multiple-input multiple-output (MIMO) will be co-existed. However, interference in the uplink D2D underlaid massive MIMO cellular networks needs to be coordinated, due to the vast cellular and D2D transmissions. To this end, this paper introduces a spatially dynamic power control solution for mitigating the cellular-to-D2D and ... View full abstract»

• ### Optimal Joint Power and Subcarrier Allocation for Full-Duplex Multicarrier Non-Orthogonal Multiple Access Systems

Publication Year: 2017, Page(s):1077 - 1091
Cited by:  Papers (1)
| | PDF (2211 KB) | HTML

In this paper, we investigate resource allocation algorithm design for multicarrier non-orthogonal multiple access (MC-NOMA) systems employing a full-duplex (FD) base station for serving multiple half-duplex (HD) downlink and uplink users simultaneously. The proposed algorithm is obtained from the solution of a non-convex optimization problem for the maximization of the weighted sum system through... View full abstract»

• ### On the Energy and Spectral Efficiency Tradeoff in Massive MIMO-Enabled HetNets With Capacity-Constrained Backhaul Links

Publication Year: 2017, Page(s):4720 - 4733
| | PDF (1918 KB) | HTML

In this paper, we propose a general framework to study the tradeoff between energy efficiency (EE) and spectral efficiency (SE) in massive multiple-input-multiple-output-enabled heterogenous networks while ensuring proportional rate fairness among users and taking into account the backhaul capacity constraint. We aim at jointly optimizing user association, spectrum allocation, power coordination, ... View full abstract»

• ### Performance of Non-orthogonal Multiple Access With a Novel Asynchronous Interference Cancellation Technique

Publication Year: 2017, Page(s):1319 - 1335
Cited by:  Papers (1)
| | PDF (2623 KB) | HTML

The non-orthogonal multiple access (NOMA) allows one subcarrier to be allocated to more than one user at the same time in an orthogonal frequency division multiplexing (OFDM) system. NOMA is a promising technique to provide high throughput due to frequency reuse within a cell. In this paper, a novel interference cancellation (IC) technique is proposed for asynchronous NOMA systems. The proposed IC... View full abstract»

• ### Device-to-Device Communications Underlaying Cellular Networks

Publication Year: 2013, Page(s):3541 - 3551
Cited by:  Papers (268)
| | PDF (1046 KB) | HTML

In cellular networks, proximity users may communicate directly without going through the base station, which is called Device-to-device (D2D) communications and it can improve spectral efficiency. However, D2D communications may generate interference to the existing cellular networks if not designed properly. In this paper, we study a resource allocation problem to maximize the overall network thr... View full abstract»

• ### A vector-perturbation technique for near-capacity multiantenna multiuser communication-part I: channel inversion and regularization

Publication Year: 2005, Page(s):195 - 202
Cited by:  Papers (772)  |  Patents (50)
| | PDF (416 KB) | HTML

Recent theoretical results describing the sum capacity when using multiple antennas to communicate with multiple users in a known rich scattering environment have not yet been followed with practical transmission schemes that achieve this capacity. We introduce a simple encoding algorithm that achieves near-capacity at sum rates of tens of bits/channel use. The algorithm is a variation on channel ... View full abstract»

• ### Physical-Layer Security With Full-Duplex Transceivers and Multiuser Receiver at Eve

Publication Year: 2017, Page(s):4392 - 4405
| | PDF (2043 KB) | HTML

Full-duplex communication enables simultaneous transmission from both ends of a communication link, thereby promising significant performance gains. Generally, it has been shown that the throughput and delay gains of full-duplex communication are somewhat limited in realistic network settings, leading researchers to study other possible applications that can accord higher gains. The potential of f... View full abstract»

• ### Optimal Resource Allocation for Power-Efficient MC-NOMA With Imperfect Channel State Information

Publication Year: 2017, Page(s):3944 - 3961
| | PDF (1758 KB) | HTML

In this paper, we study power-efficient resource allocation for multicarrier non-orthogonal multiple access systems. The resource allocation algorithm design is formulated as a non-convex optimization problem which jointly designs the power allocation, rate allocation, user scheduling, and successive interference cancellation (SIC) decoding policy for minimizing the total transmit power. The propo... View full abstract»

• ### Communications and Signals Design for Wireless Power Transmission

Publication Year: 2017, Page(s):2264 - 2290
| | PDF (3288 KB) | HTML

Radiative wireless power transfer (WPT) is a promising technology to provide cost-effective and real-time power supplies to wireless devices. Although radiative WPT shares many similar characteristics with the extensively studied wireless information transfer or communication, they also differ significantly in terms of design objectives, transmitter/receiver architectures and hardware constraints,... View full abstract»

• ### Optical MIMO-OFDM With Generalized LED Index Modulation

Publication Year: 2017, Page(s):3429 - 3441
| | PDF (2883 KB) | HTML

Visible light communications (VLC) is a promising and uncharted new technology for the next generation of wireless communication systems. This paper proposes a novel generalized light emitting diode (LED) index modulation method for multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM)-based VLC systems. The proposed scheme avoids the typical spectrum efficiency l... View full abstract»

• ### Ultra-Reliable Low Latency Communication (URLLC) using Interface Diversity

Publication Year: 2017, Page(s): 1
| | PDF (1675 KB)

An important ingredient of the future 5G systems will be Ultra-Reliable Low-Latency Communication (URLLC). A way to offer URLLC without intervention in the baseband/PHY layer design is to use interface diversity and integrate multiple communication interfaces, each interface based on a different technology. In this work, we propose to use coding to seamlessly distribute coded payload and redundanc... View full abstract»

• ### Access Point Selection for Hybrid Li-Fi and Wi-Fi Networks

Publication Year: 2017, Page(s):5375 - 5385
| | PDF (2200 KB)

Hybrid light fidelity (Li-Fi) and wireless fidelity (Wi-Fi) networks are an emerging technology for future indoor wireless communications. This hybrid network combines the high-speed data transmission offered by visible light communication and the ubiquitous coverage of radio-frequency techniques. While a hybrid network can improve the system throughput and users’ experience, it also challe... View full abstract»

• ### Differential Quadrature Spatial Modulation

Publication Year: 2017, Page(s):3810 - 3817
| | PDF (1404 KB) | HTML

Quadrature spatial modulation (QSM) is a recent multiple input multiple output transmission scheme that attracted significant research interest. QSM expands the spatial constellation diagram of spatial modulation (SM) to enhance the overall spectral efficiency while retaining all SM inherent advantages. In this paper, differential QSM (DQSM) is proposed to alleviate the requirement of channel know... View full abstract»

• ### Large System Analysis of Resource Allocation in Heterogeneous Networks With Wireless Backhaul

Publication Year: 2017, Page(s):5040 - 5053
| | PDF (1456 KB) | HTML

Small-cell networks and massive multiple-input multiple-output (MIMO) systems are regarded as important candidate techniques for 5G communication systems. This paper considers a heterogeneous network composed of a macrocell tier overlaid with an extremely dense tier of small-cells. In the network, the macrocell base station (BS), which applies massive MIMO, does not only serve macro user equipment... View full abstract»

• ### Comparison of Collision-Free and Contention-Based Radio Access Protocols for the Internet of Things

Publication Year: 2017, Page(s):3832 - 3846
| | PDF (2238 KB) | HTML

The fifth-generation (5G) cellular networks will face the challenge of integrating the traditional broadband services with the Internet of Things (IoT), which is characterized by sporadic uplink transmissions of small data packets. Indeed, the access procedure of the previous generation cellular network (4G) is not able to support IoT traffic efficiently, because it requires a large amount of sign... View full abstract»

• ### Resource Allocation for D2D-Enabled Vehicular Communications

Publication Year: 2017, Page(s):3186 - 3197
| | PDF (2301 KB) | HTML

The widely deployed cellular network, assisted with device-to-device (D2D) communications, can provide a promising solution to support efficient and reliable vehicular communications. Fast channel variations caused by high mobility in a vehicular environment need to be properly accounted for when designing resource allocation schemes for the D2D-enabled vehicular networks. In this paper, we perfor... View full abstract»

• ### Closed-Form Expressions for ICI/ISI in Filtered OFDM Systems for Asynchronous 5G Uplink

Publication Year: 2017, Page(s):4886 - 4898
| | PDF (2137 KB) | HTML

One of the major purposes for fifth generation (5G) communications waveform design is to relax the synchronization requirements for supporting efficient massive machine type communications (MTCs). Polynomial cancellation coded orthogonal frequency-division multiplexing (PCC-OFDM) and universal filtered multi-carrier (UFMC) are designed to reduce the sidelobes of the OFDM waveform to protect agains... View full abstract»

• ### Quantized Precoding for Massive MU-MIMO

Publication Year: 2017, Page(s):4670 - 4684
| | PDF (1174 KB) | HTML

Massive multiuser (MU) multiple-input multiple-output (MIMO) is foreseen to be one of the key technologies in fifth-generation wireless communication systems. In this paper, we investigate the problem of downlink precoding for a narrowband massive MU-MIMO system with low-resolution digital-to-analog converters (DACs) at the base station (BS). We analyze the performance of linear precoders, such as... View full abstract»

• ### Coverage in Heterogeneous Downlink Millimeter Wave Cellular Networks

Publication Year: 2017, Page(s):4463 - 4477
| | PDF (1553 KB) | HTML

In this paper, we provide an analytical framework to analyze heterogeneous downlink millimeter-wave (mm-wave) cellular networks consisting of K tiers of randomly located base stations (BSs), where each tier operates in an mm-wave frequency band. Signal-to-interference-plus-noise ratio (SINR) coverage probability is derived for the entire network using tools from stochastic geometry. The distinguis... View full abstract»

• ### On the general BER expression of one- and two-dimensional amplitude modulations

Publication Year: 2002, Page(s):1074 - 1080
Cited by:  Papers (515)  |  Patents (2)
| | PDF (314 KB) | HTML

Quadrature amplitude modulation (QAM) is an attractive technique to achieve high rate transmission without increasing the bandwidth. A great deal of attention has been devoted to the study of bit error rate (BER) performance of QAM, and approximate expressions for the bit error probability of QAM have been developed in many places in the literature. However, the exact and general BER expression of... View full abstract»

• ### Millimeter Wave Cellular Networks: A MAC Layer Perspective

Publication Year: 2015, Page(s):3437 - 3458
Cited by:  Papers (45)
| | PDF (1874 KB) | HTML

The millimeter-wave (mmWave) frequency band is seen as a key enabler of multigigabit wireless access in future cellular networks. In order to overcome the propagation challenges, mmWave systems use a large number of antenna elements both at the base station and at the user equipment, which leads to high directivity gains, fully directional communications, and possible noise-limited operations. The... View full abstract»

• ### Secure Hybrid VLC-RF Systems With Light Energy Harvesting

Publication Year: 2017, Page(s):4348 - 4359
| | PDF (1156 KB) | HTML

In this paper, a hybrid visible light communication-radio frequency (RF) system, including a legitimate receiver (R) and an eavesdropper (E) is considered. R can harvest energy from the light emitted by light emitting diodes (LEDs), which is used for the information transmission between R and the RF receiver which is close to the LED. It is assumed that E tries to eavesdrop the information deliver... View full abstract»

• ### Eigenvalue-based spectrum sensing algorithms for cognitive radio

Publication Year: 2009, Page(s):1784 - 1793
Cited by:  Papers (486)  |  Patents (7)
| | PDF (546 KB) | HTML

Spectrum sensing is a fundamental component in a cognitive radio. In this paper, we propose new sensing methods based on the eigenvalues of the covariance matrix of signals received at the secondary users. In particular, two sensing algorithms are suggested, one is based on the ratio of the maximum eigenvalue to minimum eigenvalue; the other is based on the ratio of the average eigenvalue to minim... View full abstract»

• ### Massive MIMO With Max-Min Power Control in Line-of-Sight Propagation Environment

Publication Year: 2017, Page(s):4685 - 4693
| | PDF (1173 KB) | HTML

Massive MIMO relies on the asymptotic orthogonality of channel vectors to different users. For $M$ service antennas, the expected correlation between a pair of channel vectors under line-of-sight (LoS) conditions decreases at least as fast as $log (M)/M$ ... View full abstract»

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

Publication Year: 2017, Page(s): 1
| | PDF (2783 KB)

This work discusses full-dimension multiple-inputmultiple- output (FD-MIMO) technology, which is currently an active area of research and standardization in wireless communications for evolution towards Fifth Generation (5G) cellular systems. FD-MIMO utilizes an active antenna system (AAS) with a two-dimensional (2D) planar array structure, that not only allows a large number of antenna elements t... View full abstract»

• ### Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation

Publication Year: 2015, Page(s):4651 - 4665
Cited by:  Papers (13)
| | PDF (1437 KB) | HTML

A new coded modulation scheme is proposed. At the transmitter, the concatenation of a distribution matcher and a systematic binary encoder performs probabilistic signal shaping and channel coding. At the receiver, the output of a bitwise demapper is fed to a binary decoder. No iterative demapping is performed. Rate adaption is achieved by adjusting the input distribution and the transmission power... View full abstract»

• ### Primary Channel Gain Estimation for Spectrum Sharing in Cognitive Radio Networks

Publication Year: 2017, Page(s):4152 - 4162
| | PDF (1754 KB) | HTML

In cognitive radio networks, the channel gain between primary transceivers, namely, primary channel gain, is crucial for a cognitive transmitter (CT) to control the transmit power and achieve spectrum sharing. Conventionally, the primary channel gain is estimated in the primary system, and thus unavailable at the CT. To deal with the issue, two estimators are proposed by enabling the CT to sense p... View full abstract»

• ### Filtered OFDM Systems, Algorithms and Performance Analysis for 5G and Beyond

Publication Year: 2017, Page(s): 1
| | PDF (693 KB)

Filtered orthogonal frequency division multiplexing (F-OFDM) system is a promising waveform for 5G and beyond to enable multi-service system and spectrum efficient network slicing. However, the performance for F-OFDM systems has not been systematically analyzed in literature. In this paper, we first establish a mathematical model for F-OFDM system and derive the conditions to achieve the interfere... View full abstract»

• ### Ambient Backscatter: A New Approach to Improve Network Performance for RF-Powered Cognitive Radio Networks

Publication Year: 2017, Page(s):3659 - 3674
| | PDF (2042 KB) | HTML

This paper introduces a new solution to improve the performance for secondary systems in radio frequency (RF) powered cognitive radio networks (CRNs). In a conventional RF-powered CRN, the secondary system works based on the harvest-then-transmit protocol. That is, the secondary transmitter (ST) harvests energy from primary signals and then uses the harvested energy to transmit data to its seconda... View full abstract»

• ### A robust digital baseband predistorter constructed using memory polynomials

Publication Year: 2004, Page(s):159 - 165
Cited by:  Papers (508)  |  Patents (28)
| | PDF (264 KB) | HTML

Power amplifiers (PAs) are inherently nonlinear devices and are used in virtually all communications systems. Digital baseband predistortion is a highly cost-effective way to linearize PAs, but most existing architectures assume that the PA has a memoryless nonlinearity. For wider bandwidth applications such as wideband code-division multiple access (WCDMA) or wideband orthogonal frequency-divisio... View full abstract»

• ### The Laplacian Pyramid as a Compact Image Code

Publication Year: 1983, Page(s):532 - 540
Cited by:  Papers (2535)  |  Patents (258)
| | PDF (1200 KB)

We describe a technique for image encoding in which local operators of many scales but identical shape serve as the basis functions. The representation differs from established techniques in that the code elements are localized in spatial frequency as well as in space. Pixel-to-pixel correlations are first removed by subtracting a lowpass filtered copy of the image from the image itself. The resul... View full abstract»

• ### Hybrid Analog–Digital Precoding Design for Secrecy mmWave MISO-OFDM Systems

Publication Year: 2017, Page(s):5009 - 5026
| | PDF (1628 KB) | HTML

Millimeter-wave large-scale antenna systems typically apply hybrid analog–digital precoders to reduce hardware complexity and power consumption. In this paper, we design hybrid precoders for physical-layer security under two types of channel knowledge. With full channel knowledge at transmitter, we provide sufficient conditions on the minimum number of RF chains needed to realize the perfor... View full abstract»

• ### Downlink Coverage Analysis for a Finite 3-D Wireless Network of Unmanned Aerial Vehicles

Publication Year: 2017, Page(s):4543 - 4558
| | PDF (1331 KB) | HTML

In this paper, we consider a finite network of unmanned aerial vehicles serving a given region. Modeling this network as a uniform binomial point process, we derive the downlink coverage probability of a reference receiver located at an arbitrary position on the ground assuming Nakagami-m fading for all wireless links. The reference receiver is assumed to connect to its closest transmitting node a... 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