Multi-cell pseudo-random beamforming: Opportunistic feedback and beam selection

Son, Woong; Jung, Bang Chul; Shin, Won-Yong; Shin, Yoan

doi:10.1109/ictc.2017.8190757

Cited by 3 publications

(9 citation statements)

References 7 publications

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“…We consider three types of feedback strategies: the conventional full feedback (F-FB), the conventional opportunistic feedback (O-FB) [ 26 , 27 ], and the proposed codebook-based opportunistic feedback (CO-FB) strategy. For the detailed explanations, we assume that the number of required bits to deliver the quantized SINR value is Q

.…”

Section: Pseudo-random Beamforming For Improving Physical-layer Sementioning

confidence: 99%

“…The authors proposed some beamforming algorithms for improving PLS such as a maximum-SLNR-based beamforming algorithm and a zero-forcing beamforming algorithm based on the eavesdropper’s CSI in MISOME and MU-MISOME wire-tap networks. In [ 26 ], the authors originally proposed a novel pseudo-random beamforming (PRBF) technique to maximize the achievable sum-rate in multi-cell downlink cellular networks. Each cell has a BS with multiple antennas and multiple MSs with a single antenna.…”

Section: Introductionmentioning

confidence: 99%

“…In [ 26 ], the authors originally proposed a novel pseudo-random beamforming (PRBF) technique to maximize the achievable sum-rate in multi-cell downlink cellular networks. Each cell has a BS with multiple antennas and multiple MSs 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: Pseudo-random Beamforming For Improving Physical-layer Sementioning

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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