Pseudo-Random Beamforming with Beam Selection for Improving Physical-Layer Security

Son, Woong; Jung, Bang Chul; Kim, Choul‐Young; Kim, Jong Min

doi:10.1109/icufn.2018.8436732

Cited by 1 publication

(10 citation statements)

References 8 publications

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“…Many studies on multi-cell MIMO networks assume the local CSI as well [ 28 , 29 , 30 ]. In addition, many previous studies on physical-layer security assume that the legitimate communication nodes know the wireless channel to the eavesdroppers based on local CSI assumption [ 7 , 8 , 25 , 27 ]. In addition, we assume that the same frequency band is used for data transmission.…”

Section: System Modelmentioning

confidence: 99%

“…By announcing an optimal BF candidate among multiple candidates of pseudo-randomly generated BF matrices at the BS coordinator, the multi-cell downlink sum-rate is maximized. In [ 27 ], the authors proposed a PRBF technique to improve PLS in single-cell downlink cellular networks. In addition, the authors assumed a system model consisting a legitimate BS with multiple antennas, multiple legitimate MSs with a single antenna and a potential eavesdropper with a single antenna.…”

Section: Introductionmentioning

confidence: 99%

“…In [ 27 ], the authors proposed a PRBF technique to improve PLS in single-cell downlink cellular networks. In addition, the authors assumed a system model consisting a legitimate BS with multiple antennas, multiple legitimate MSs with a single antenna and a potential eavesdropper with a single antenna.…”

Section: Introductionmentioning

confidence: 99%

“… We also consider the conventional F-FB, opportunistic feedback (O-FB) and newly proposed the codebook-based opportunistic feedback (CO-FB) strategy. In addition, we compare the conventional F-FB, O-FB [ 26 , 27 ] and the proposed CO-FB in terms of secrecy sum-rate and required feedback bits (feedback overhead). …”

Section: Introductionmentioning

confidence: 99%

“…In addition, we compare the conventional F-FB, O-FB [ 26 , 27 ] and the proposed CO-FB in terms of secrecy sum-rate and required feedback bits (feedback overhead).…”

Section: Introductionmentioning

confidence: 99%

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A Pseudo-Random Beamforming Technique for Improving Physical-Layer Security of MIMO Cellular Networks

Son

Jang

Jung

2019

Entropy

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In this paper, we propose a pseudo-random beamforming (PRBF) technique for improving physical-layer security (PLS) in multiple input multiple output (MIMO) downlink cellular networks consisting of a legitimate base station (BS), multiple legitimate mobile stations (MSs) and potential eavesdroppers. The legitimate BS can obtain available potential eavesdroppers' channel state information (CSI), which is registered in an adjacent cell. In the proposed PRBF technique, the legitimate BS pseudo-randomly generates multiple candidates of the transmit beamforming (BF) matrix, in which each transmit BF matrix consists of multiple orthonormal BF vectors and shares BF information with legitimate MSs before data transmission. Each legitimate MS generates receive BF vectors to maximize the receive signal-to-interference-plus-noise (SINR) for all pseudo-randomly generated transmit beams and calculates the corresponding SINR. Then, each legitimate MS sends a single beam index and the corresponding SINR value of the BF vector that maximizes the received SINR for each BF matrix since a single spatial stream is sent to each legitimate MS. Based on the feedback information from legitimate MSs and the CSI from the legitimate BS to eavesdroppers, the legitimate BS selects the optimal transmit BF matrix and the legitimate MSs that maximizes secrecy sum-rate. We also propose a codebook-based opportunistic feedback (CO-FB) strategy to reduce feedback overhead at legitimate MSs. Based on extensive computer simulations, the proposed PRBF with the proposed CO-FB significantly outperforms the conventional random beamforming (RBF) with the conventional opportunistic feedback (O-FB) strategies in terms of secrecy sum-rate and required feedback bits.

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Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In addition, we compare the conventional F-FB, O-FB [ 26 , 27 ] and the proposed CO-FB in terms of secrecy sum-rate and required feedback bits (feedback overhead).…”

Section: Introductionmentioning

confidence: 99%

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