Digital Communication Over Fading Channels
01 Jan 2016-
About: The article was published on 2016-01-01 and is currently open access. It has received 726 citations till now. The article focuses on the topics: Fading & Diversity scheme.
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TL;DR: This paper proposes a harvest-then-cooperate (HTC) protocol, in which the source and relay harvest energy from the AP in the downlink and work cooperatively in the uplink for the source's information transmission.
Abstract: In this paper, we consider a wireless-powered cooperative communication network consisting of one hybrid access-point (AP), one source, and one relay. In contrast to conventional cooperative networks, the source and relay in the considered network have no embedded energy supply. They need to rely on the energy harvested from the signals broadcasted by the AP for their cooperative information transmission. Based on this three-node reference model, we propose a harvest-then-cooperate (HTC) protocol, in which the source and relay harvest energy from the AP in the downlink and work cooperatively in the uplink for the source's information transmission. Considering a delay-limited transmission mode, the approximate closed-form expression for the average throughput of the proposed protocol is derived over Rayleigh fading channels. Subsequently, this analysis is extended to the multi-relay scenario, where the approximate throughput of the HTC protocol with two popular relay selection schemes is derived. The asymptotic analyses for the throughput performance of the considered schemes at high signal-to-noise radio are also provided. All theoretical results are validated by numerical simulations. The impacts of the system parameters, such as time allocation, relay number, and relay position, on the throughput performance are extensively investigated.
429 citations
Cites background or methods from "Digital Communication Over Fading C..."
...In addition, the source and relay are assumed to have no other embedded energy supply and thus need to first harvest energy from the signal broadcasted by the AP in the DL, which can be stored in a rechargeable battery and then used for the information transmission to the AP in the UL....
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...It can observed that (17) is simplified to (8) whenN is set to 1, which validates our derivation....
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...1, we propose a harvest-then-cooperate (HTC) protocol for the WPCCN, where the source and relay harvest energy from the AP during the DL phase and cooperate for the source’s information transmission during the UL phase....
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TL;DR: It is shown that significant performance enhancements can be achieved at the expense of synchronizing the transmit antennas in the proposed quadrature spatial modulation scheme.
Abstract: This paper proposes a new multiple-input–multiple-output (MIMO) technique called quadrature spatial modulation (QSM). QSM enhances the overall throughput of conventional SM systems by using an extra modulation spatial dimension. The current SM technique uses only the real part of the SM constellation, and the proposed method in this paper extends this to in-phase and quadrature dimensions. It is shown that significant performance enhancements can be achieved at the expense of synchronizing the transmit antennas. Additionally, a closed-form expression for the pairwise error probability (PEP) of generic QSM system is derived and used to calculate a tight upper bound of the average bit error probability (ABEP) over Rayleigh fading channels. Moreover, a simple and general asymptotic expression is derived and analyzed. Obtained Monte Carlo simulation results corroborate the accuracy of the conducted analysis and show the significant enhancements of the proposed QSM scheme.
415 citations
Cites background from "Digital Communication Over Fading C..."
...and the average PEP can be written as [22], [23]...
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TL;DR: In this article, a tutorial on stochastic geometry-based analysis for cellular networks is presented, which is distinguished by its depth with respect to wireless communication details and its focus on cellular networks.
Abstract: This paper presents a tutorial on stochastic geometry (SG)-based analysis for cellular networks. This tutorial is distinguished by its depth with respect to wireless communication details and its focus on cellular networks. This paper starts by modeling and analyzing the baseband interference in a baseline single-tier downlink cellular network with single antenna base stations and universal frequency reuse. Then, it characterizes signal-to-interference-plus-noise-ratio and its related performance metrics. In particular, a unified approach to conduct error probability, outage probability, and transmission rate analysis is presented. Although the main focus of this paper is on cellular networks, the presented unified approach applies for other types of wireless networks that impose interference protection around receivers. This paper then extends the unified approach to capture cellular network characteristics (e.g., frequency reuse, multiple antenna, power control, etc.). It also presents numerical examples associated with demonstrations and discussions. To this end, this paper highlights the state-of-the-art research and points out future research directions.
397 citations
TL;DR: It is demonstrated that the all selection criteria achieve full secrecy diversity order N, while the proposed two criteria in this paper outperform the conventional max-min scheme.
Abstract: We investigate the impact of cochannel interference on the security performance of multiple amplify-and-forward (AF) relaying networks, where $N$ intermediate AF relays assist the data transmission from the source to the destination. The relays are corrupted by multiple cochannel interferers, and the information transmitted from the relays to the destination can be overheard by the eavesdropper. In order to deal with the interference and wiretap, the best out of $N$ relays is selected for security enhancement. To this end, we derive a novel lower bound on the secrecy outage probability (SOP), which is then utilized to present two best relay selection criteria, based on the instantaneous and statistical channel information of the interfering links. For these criteria and the conventional max–min criterion, we quantify the impact of cochannel interference and relay selection by deriving the lower bound on the SOP. Furthermore, we derive the asymptotic SOP for each criterion, to explicitly reveal the impact of transmit power allocation among interferers on the secrecy performance, which offers valuable insights into practical design. We demonstrate that the all selection criteria achieve full secrecy diversity order $N$ , while the proposed two criteria in this paper outperform the conventional max–min scheme.
206 citations
TL;DR: Novel analytical solutions for the probability of strictly positive secrecy capacity (SPSC) and a lower bound of secure outage probability (SOP) for independent and non-identically distributed channel coefficients without parameter constraints are obtained.
Abstract: In this paper, we consider the transmission of confidential information over a $\kappa $ – $\mu $ fading channel in the presence of an eavesdropper who also experiences $\kappa $ – $\mu $ fading. In particular, we obtain novel analytical solutions for the probability of strictly positive secrecy capacity (SPSC) and a lower bound of secure outage probability (SOP $^{L}$ ) for independent and non-identically distributed channel coefficients without parameter constraints. We also provide a closed-form expression for the probability of SPSC when the $\mu $ parameter is assumed to take positive integer values. Monte-Carlo simulations are performed to verify the derived results. The versatility of the $\kappa $ – $\mu $ fading model means that the results presented in this paper can be used to determine the probability of SPSC and SOP $^{L}$ for a large number of other fading scenarios, such as Rayleigh, Rice (Nakagami- $n$ ), Nakagami- $m$ , One-Sided Gaussian, and mixtures of these common fading models. In addition, due to the duality of the analysis of secrecy capacity and co-channel interference (CCI), the results presented here will have immediate applicability in the analysis of outage probability in wireless systems affected by CCI and background noise (BN). To demonstrate the efficacy of the novel formulations proposed here, we use the derived equations to provide a useful insight into the probability of SPSC and SOP $^{L}$ for a range of emerging wireless applications, such as cellular device-to-device, peer-to-peer, vehicle-to-vehicle, and body centric communications using data obtained from real channel measurements.
164 citations
References
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Book•
14 Aug 2015
TL;DR: An overview of the Alliance's activities can be found in this article, where the authors present an overview of all the schools and teachers of the ALLIANCE ISRAELITE UNIVERSELLE.
Abstract: AcknowledgmentsA Note on the DocumentsMapIntroductionAn Overview of the Alliance's ActivitiesPART ONE THE SCHOOLS AND TEACHERS OF THE ALLIANCE ISRAELITE UNIVERSELLEInstruction in the Alliance SchoolsThe Alliance Teaching CorpsPART TWO THE DISCOURSE OF THE ALLIANCE TEACHERS AND THE "CIVILIZING" OF THE JEWISH COMMUNITIES IN THE LANDS OF ISLAMThe Moralizing AgendaThe Emancipation and Reformation of WomenThe Transformation of the Social Structure of the Jewish CommunityThe Critique of Traditional JudaismThe War of LanguagesA Portrait of the CommunitiesThe Impact of the West and the Alliance SchoolsPART THREE THE ALLIANCE TEACHER AS POLITICAL ACTIVIST AND POLITICAL OBSERVERThe Task of ProtectionThe Teacher as Patriot and Advocate of the JewsThe Age of NationalismConclusionGlossaryBibliographyIndex of Personal NamesIndex of Place Names
13 citations