Secrecy Performance Analysis of Cognitive Decode-and-Forward Relay Networks in Nakagami- $m$ Fading Channels

Zhao, Rui; Yuan, Yi; Fan, Lisheng; He, Yu-Cheng

doi:10.1109/tcomm.2016.2618793

Cited by 97 publications

(54 citation statements)

References 42 publications

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“…Thus, the detailed parameter set about the correlated fading channels can be found in the works [46][47][48]. 2 For simplicity, we use superscript * replace the different precoding schemes, which shall be denotes the "MRT", "ZF" or "MMSE", respectively.…”

Section: Endnotesmentioning

confidence: 99%

Multiuser precoding scheme and achievable rate analysis for massive MIMO system

Tan

Huang

Yang

et al. 2018

J Wireless Com Network

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We analyze the downlink multiuser precoding of massive multiple input multiple output (MIMO) system, where the base station (BS) has ideal channel state information (CSI) and adopts three types of different linear precoding schemes, i.e., maximum ratio transmission (MRT), zero-forcing (ZF), and minimum mean squared error (MMSE). Under a Rayleigh fading channel, we attain the exact expressions on the achievable rate for these three precoding schemes. Moreover, we provide several insights on the achievable rates and reveal the relation of the number of BS antennas, the number of users, and the input signal-to-noise ratio (SNR) with the achievable rates respectively. It is found in general that the achievable rate increases with the number of BS antennas and the input SNR. To be more specific, the MRT precoding scheme is much inferior to the ZF and MMSE precoding schemes and tends to be at a fixed rate at the high SNR case. On the contrary, the MRT precoding scheme outperforms ZF precoding schemes at the low SNR case. Moreover, the total achievable rate always does not increase with the number of users and the optimal number of users always exists for the ZF and MMSE precoding schemes.

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Section: Endnotesmentioning

confidence: 99%

Multiuser precoding scheme and achievable rate analysis for massive MIMO system

Tan

Huang

Yang

et al. 2018

J Wireless Com Network

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“…Using the analysis result in (28), the probability density function of * can be expressed as * ( ) = ∑ =1 ( ) (−1)…”

Section: Exact Expression On Secrecy Outagementioning

confidence: 99%

“…The authors in [22] provided the framework of wiretap channels, which gives a general way to analyze and design the secure physical-layer security. In general, the performances of secure communications is affected by many wireless channel parameters, such as the channel correlation [23][24][25] and fading characteristics [26][27][28]. Recently, researchers turned to study the physical-layer security for NOMA communication systems.…”

Section: Introductionmentioning

confidence: 99%

Impact of Antenna Selection on Physical‐Layer Security of NOMA Networks

Deng

Fan

et al. 2018

Wireless Communications and Mobile Computing

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This paper studies the impacts of antenna selection algorithms in decode-and-forward (DF) cooperative nonorthogonal multiple access (NOMA) networks, where the secure information from the relay can be overheard by an eavesdropper in the networks. In order to ensure the secure transmission, an optimal antenna selection algorithm is proposed to choose one best relay's antenna to assist the secure transmission. We study the impact of antenna selection on the system secure communication through deriving the analytical expression of the secrecy outage probability along with the asymptotic expression in the high regime of signal-tonoise ratio (SNR) and main-to-eavesdropper ratio (MER). From the analytical and asymptotic expressions, we find that the system secure performance is highly dependent on the system parameters such as the number of antennas at the relay, SNR, and MER. In particular, the secrecy diversity order of the system is equal to the antenna number, when the interference from the second user is limited.

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“…Along with improved traffic rate, transmission reliability, and quality of service, the upcoming 5G communication systems aim at improving the energy efficiency without compromising on the user experience [5][6][7][8]. Massive multiple-input multiple-output (MIMO), viewed as one of the important techniques for 5G wireless communication, has attracted a great deal of research interest in current years.…”

Section: Introductionmentioning

confidence: 99%

Low Cost and High Efficiency Hybrid Architecture Massive MIMO Systems Based on DFT Processing

Tan

Carvalho

et al. 2018

Wireless Communications and Mobile Computing

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Low cost and high efficiency, defined as energy efficiency (EE) and spectral efficiency (SE), have raised more and more attention in the fifth generation (5G) communication systems due to steadily rising hardware cost, energy consumption, and mobile traffic. This paper studies the hybrid architecture of multiuser massive MIMO systems, where the digital domain utilizes the zero-forcing (ZF) precoding scheme and the analog domain uses discrete Fourier transform (DFT) processing that significantly reduces hardware cost and energy consumption. We derive analytical expressions on the total achievable SE and EE, as well as offering insight into some engineering parameters in the system performance. Our aim is to achieve low cost and high efficiency massive MIMO system, with constraints on the overall transmit power, the number of users, and the number of radio frequency (RF) chains. Results exhibit that the total achievable SE of the hybrid architectures with DFT precessing is inferior to the full digital architectures and hybrid architectures with the ideal phase shifters, but the performance attenuation can be compensated by providing the more input SNR and higher number of RF chains. Moreover, we find that the total achievable EE of hybrid architectures with DFT precessing outperforms other massive MIMO architectures that include a full digital implementation, ideal phase shifters, and a switched network.

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Secrecy Performance Analysis of Cognitive Decode-and-Forward Relay Networks in Nakagami- $m$ Fading Channels

Cited by 97 publications

References 42 publications

Multiuser precoding scheme and achievable rate analysis for massive MIMO system

Multiuser precoding scheme and achievable rate analysis for massive MIMO system

Impact of Antenna Selection on Physical‐Layer Security of NOMA Networks

Low Cost and High Efficiency Hybrid Architecture Massive MIMO Systems Based on DFT Processing

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