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Showing papers in "Physical Communication in 2016"


Journal ArticleDOI
TL;DR: In this article, the authors investigate and discuss serious limitations of the fourth generation (4G) cellular networks and corresponding new features of 5G networks, and present a comparative study of the proposed architectures that can be categorized on the basis of energy-efficiency, network hierarchy, and network types.

363 citations


Journal ArticleDOI
TL;DR: Three scenarios are presented and analysed to delineate different potential improvement areas pursued through the introduction of SDN/NFV technologies in the satellite ground segment domain and a number of use cases are developed to gain further insight into specific capabilities and to identify the technical challenges stemming from them.

142 citations


Journal ArticleDOI
TL;DR: This paper provides an in depth survey on compressive sensing techniques and classifies these techniques according to which process they target, namely, sparse representation, sensing matrix, or recovery algorithms.

116 citations


Journal ArticleDOI
TL;DR: A Hierarchical Polynomial (HP) classifier is proposed to automatically classify M-PSK and M-QAM signals in Additive White Gaussian Noise and slow flat fading environments and shows an overall improvement in the probability of correct classification that reaches 100% using only 512 received symbols at 20 dB.

67 citations


Journal ArticleDOI
TL;DR: This paper surveys the most recent common sources of randomness used to generate the secret key and describes the metrics used to evaluate the strength of the generated key.

30 citations


Journal ArticleDOI
TL;DR: Various MUD techniques for SDMA-OFDM system are reviewed, which can provide high spectral efficiency and resistance from inter symbol interference and multiple users transmit their data simultaneously.

27 citations


Journal ArticleDOI
TL;DR: This paper investigates the impact of transmitter IQ imbalance on DSP-assisted analog self-interference cancellation, and proposes an adaptive algorithm based on the augmented complex least mean squares method to obtain the WL filter, where no information about the transmitter and receiver IQ imbalances is needed.

21 citations


Journal ArticleDOI
TL;DR: The simulation results indicate an LTE link will remain operational even in severe interference conditions, and a detailed 3GPP-compliant LTE simulation with a sophisticated air interface modeling is used to investigate sensitivity of LTE to radar interference in macro cell, outdoor small cell, and indoor small cell scenarios.

19 citations


Journal ArticleDOI
TL;DR: This paper considers the downlink of a heterogeneous network with two broadband RATs: a primary RATsuch as LTE, and a secondary RAT such as WiFi, and formulates a centralized approach for the RAT selection as an optimization problem and proposes two distributed approaches.

19 citations


Journal ArticleDOI
TL;DR: This article proposes a new inter-cellular scheduler able to help the overloaded cells thanks to a dynamic cell bandwidth allocation based on an adequate emergency parameter called Mean Cell Packet Delay Outage Ratio (MCPDOR).

18 citations


Journal ArticleDOI
TL;DR: Simulation results have shown that RNN based CE can achieve comparable results with faster adaptation, even subject to severe environment changes without the need of retraining, in terms of essential cognitive engine design requirements, capacity, and coverage optimization.

Journal ArticleDOI
TL;DR: A very tight approximation of the probability density function of the signal-to-noise ratio (SNR) at the output of the combiner is derived and accurate approximation of significant performance criteria are derived.

Journal ArticleDOI
TL;DR: Results show significant reduction in PUs' average interference experience and impressive performance as opportunistic routing schemes can be achieved by these schemes compared to traditional shortest path based routing schemes.

Journal ArticleDOI
TL;DR: This work introduces a platform in which mobile devices can offer network services to other nearby devices, and thus act as service end points, or mobile cloudlets, in order to offer proximity services to LTE network subscribers, and offload major traffic from the core network.

Journal ArticleDOI
TL;DR: A downlink-power-control scheme is presented for femtocell with no overhead signalling exchange with the macrocell, which reduces the outage probability of the nearby macrocell user equipment (MUE) up to 16.7% compared to fixed power setting, while maintaining the spectral efficiency of Femtocell users.

Journal ArticleDOI
TL;DR: Challenges in interference modeling for performance analysis of future wireless networks are discussed and correlations in node locations, three-dimensional structure of future network deployments, and complexity of in-building and inter-building radio propagation are identified as key domains where further research is needed.

Journal ArticleDOI
TL;DR: The combination of time-of-arrival measurements and Doppler speed estimates associated with a single message enhances the accuracy of position estimation and provides an estimate of the velocity of the mobile object.

Journal ArticleDOI
TL;DR: The proposed method improves the accuracy of ABER performance by reducing disparity computation errors between ABER and EBER performances and this allows the BER of AF-MR networks to be accurately calculated using either ABER or EBER.

Journal ArticleDOI
TL;DR: A novel method for spectrum sensing, based on the Expectation Maximization algorithm applied to the histogram of the moving average signal power, which enables the estimation of the number of active users in a given frequency band, the power received from each user, the occupied time slots and the front-end noise floor.

Journal ArticleDOI
TL;DR: Approximations of PEP match up with simulation results very well and show that, if the BS knows Channel State Information (CSI) in its own cell only and does not have CSI in other cells, error floors will occur even when Signal-to-Noise Ratio goes to infinity for both the ZF decoder and the MMSE decoder, while these error floors disappear when M goes to large.

Journal ArticleDOI
TL;DR: This work model the most simple case of two cooperating systems interchanging capacities using an offloading scheme, and the resulting analytic model is computed by means of a two-dimensional birth and death process to seamlessly evaluate the performance of systems between partitioning and complete sharing.

Journal ArticleDOI
Xingyu Cai1, Lei Wan, Yi Huang1, Shengli Zhou1, Zhijie Shi1 
TL;DR: Simulation and semi-experimental results show that multicarrier MFSK has consistent performance in channels with different numbers of paths and in environments with different types of external noise.

Journal ArticleDOI
TL;DR: This paper investigates the uplink achievable rates of massive multiple-input multiple-output (MIMO) systems in correlated fading channels via virtual representation and proposes that the probability distribution function of SINR can be well approximated by a Gamma distribution.

Journal ArticleDOI
TL;DR: Results illustrate that when the interference at the secondary relays or destination or at both scales with SNR, the system achieves a zero diversity order and a noise floor appears in the results due to the effect of interference on the system performance.

Journal ArticleDOI
TL;DR: This paper proposes an innovative solution which hires chaos theory in a "multiple-input-multiple-output, orthogonal frequency division multiplexing, code-division multiple-access (MIMO OFDM-CDMA)" system, and investigates the autocorrelations of chaotic codes so as to choose proper sequences for spreading.

Journal ArticleDOI
TL;DR: The turbo principle is incorporated into channel equalization and channel estimation processes to improve the system reliability and the DSP based real-time single carrier underwater acoustic communication system is developed.

Journal ArticleDOI
TL;DR: This paper presents the theoretical model of a chaos-based DSSS system assuming frequency selective channel that is composed of a primary channel and a number of secondary channels, represented by a modified Saleh-Valenzuela model.

Journal ArticleDOI
TL;DR: Analysis of the bit error rate (BER) analysis of the scheduled transmit antenna selection (TAS) with maximal ratio combining (MRC) for the cognitive radio multiple-input multiple-output (CR-MIMO) systems shows that BER performance of the proposed system is improved as the number of users increases by MUD regardless of modulation types.

Journal ArticleDOI
TL;DR: This work proposes a novel approach for disseminating multimedia data in a MIMO wireless network by converting it to the multiprocessor scheduling problem where requests and antennae are regarded as tasks and processors respectively and presents three schemes (LFOS, BFOS and BBOS).

Journal ArticleDOI
TL;DR: A dynamic resource block allocation (DRBA) algorithm for avoiding CCI due to mobility of UEs, sharing the spectrum resource, in a FD communication scenario is proposed and shows significant improvement of the quality of service (QoS) of the communication links.