Massive MIMO in Spectrum Sharing Networks: Achievable Rate and Power Efficiency

Wang, Lifeng; Ngo, Hien Quoc; Elkashlan, Maged; Duong, Trung Q.; Wong, Kai-Kit

doi:10.1109/jsyst.2015.2449289

Cited by 63 publications

(51 citation statements)

References 23 publications

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“…The normalised uplink power p u and downlink power p d are set as 10 dB and 13 dB, respectively. The vertical axis represents the mean square (the power) of the SI and the total interference plus noise, which are calculated from Equations (9) and (11). Similarly as [9], the large-scale fading matrix D of the uplink signal channel is given as The large-scale fadingˇof the uplink reflected-path SI channel is set as 0.6.…”

Section: Performance Resultsmentioning

confidence: 99%

“…Both the large-scale multiple-input multiple-output (massive MIMO) and the in-band full-duplex are promising techniques to greatly improve the system spectral efficiency [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. In the traditional full-duplex system, a separate antenna or antenna array is exploited to receive the signals from the remote transmitters, meantime the self-interference (SI) is also received from its own transmitter nearby.…”

Section: Introductionmentioning

confidence: 99%

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Self‐interference suppression for the full‐duplex wireless communication with large‐scale antenna

Xing

Liu

Zhai

et al. 2016

Trans. Emerging Tel. Tech.

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Abstract-In this letter, we proposed a shared-antenna fullduplex framework for the multiuser MIMO system with a largescale antenna array exploited at the base station to transmit and receive signals simultaneously. It has the merits of both the full-duplex system and the time-division duplex massive MIMO system, i.e., the high spectral efficiency and the channel reciprocity. We focus on the zero-forcing (ZF) and the maximalratio transmission/maximal-ratio combining (MRT/MRC) linear processing methods, which are commonly used in the massive MIMO system. As the main finding, we prove that the selfinterference in the completely dependent uplink and downlink channels of this full-duplex system can be suppressed by the large-scale antenna array.Index Terms-Shared-antenna, in-band full-duplex, MU-MIMO, self-interference, massive MIMO.

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Section: Performance Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self‐interference suppression for the full‐duplex wireless communication with large‐scale antenna

Xing

Liu

Zhai

et al. 2016

Trans. Emerging Tel. Tech.

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show abstract

“…Furthermore, (a) follows from the fact that ln 1 + exp(x) is a convex function of x, since its second derivative is 1 (1+exp(x)) 2 > 0, hence, we can apply Jensen's inequality. It is worth pointing out that the results in [32]…”

Section: Appendix Bmentioning

confidence: 89%

Secure Two-Way Transmission via Wireless-Powered Untrusted Relay and External Jammer

Mamaghani

Kuhestani

Wong

2018

IEEE Trans. Veh. Technol.

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In this paper, we propose a two-way secure communication scheme where two transceivers exchange confidential messages via a wireless powered untrusted amplify-and-forward (AF) relay in the presence of an external jammer. We take into account both friendly jamming (FJ) and Gaussian noise jamming (GNJ) scenarios. Based on the time switching (TS) architecture at the relay, the data transmission is done in three phases. In the first phase, both the energy-starved nodes, the untrustworthy relay and the jammer, are charged by non-information radio frequency (RF) signals from the sources. In the second phase, the two sources send their information signals and concurrently, the jammer transmits artificial noise to confuse the curious relay. Finally, the third phase is dedicated to forward a scaled version of the received signal from the relay to the sources. For the proposed secure transmission schemes, we derive new closed-form lower-bound expressions for the ergodic secrecy sum rate (ESSR) in the high signal-to-noise ratio (SNR) regime. We further analyze the asymptotic ESSR to determine the key parameters; the high SNR slope and the high SNR power offset of the jamming based scenarios. To highlight the performance advantage of the proposed FJ, we also examine the scenario of without jamming (WoJ). Finally, numerical examples and discussions are provided to acquire some engineering insights, and to demonstrate the impacts of different system parameters on the secrecy performance of the considered communication scenarios. The numerical results illustrate that the proposed FJ significantly outperforms the traditional one-way communication and the Constellation rotation approach, as well as our proposed benchmarks, the two-way WoJ and GNJ scenarios.

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“…Advances in 5G CRN have been designed to minimize the issues of spectrum scarcity and to tolerate more users . Imperfect channel state information is minimized in cognitive radio applications through the use of a large number of MIMO antennas.…”

Section: Introductionmentioning

confidence: 99%

Secure cognitive radio‐based synchronized transmission of 5G signals using massive MIMO‐OFDM‐ES

Pari

Karuppiah

Islam

2018

Int J Communication

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Summary A cognitive radio network (CRN) can address spectrum scarcity issues to achieve higher levels of spectral efficiency. Fifth‐generation (5G) technologies are advanced telecommunication technologies that are built into CRNs. Network performance is enhanced when using a massive multiple input multiple output (MIMO) system that tolerates a large number of users based on the use of multiple antennas. Several previous research works have been conducted on 5G CRNs, although these works have failed to mitigate interference and the peak‐to‐average power ratio (PAPR). In this paper, a 5G CRN with massive MIMO that ensures secure data transmission is developed. Security is ensured via the standardized key–based secrecy method supported by a certificate authority. A CRN fusion centre (FC) plays a vital role in decision making. Fusion centre rotation is applied to mitigate interference. Massive MIMO‐OFDM effective signalling is used to address PAPR problems. The proposed CRN is experimentally modelled using network simulator 3, and its performance is evaluated. Our simulation results reveal improvements in channel capacity, a reduction in the PAPR and bit error rates, and improvements in spectral efficiency.

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Massive MIMO in Spectrum Sharing Networks: Achievable Rate and Power Efficiency

Cited by 63 publications

References 23 publications

Self‐interference suppression for the full‐duplex wireless communication with large‐scale antenna

Self‐interference suppression for the full‐duplex wireless communication with large‐scale antenna

Secure Two-Way Transmission via Wireless-Powered Untrusted Relay and External Jammer

Secure cognitive radio‐based synchronized transmission of 5G signals using massive MIMO‐OFDM‐ES

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