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On Secrecy Performance of MISO SWIPT Systems With TAS and Imperfect CSI

In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers...

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Published in:IEEE transactions on communications 2016-09, Vol.64 (9), p.3831-3843
Main Authors: Pan, Gaofeng, Lei, Hongjiang, Deng, Yansha, Fan, Lisheng, Yang, Jing, Chen, Yunfei, Ding, Zhiguo
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cited_by cdi_FETCH-LOGICAL-c339t-aa7115c44eafee9baf9b94e2cdd41a4198733642a866205b2695f8d8f856698e3
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description In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers (ERs) is considered. Assuming that the information signal to the desired IR may be eavesdropped by ERs if ERs are malicious, we investigate the secrecy performance of the target MISO SWIPT system when imperfect channel state information (CSI) is available and adopted for transmit antenna selection at the BS. Considering that each eavesdropping link experiences independent but not necessarily identically distributed Rayleigh fading, the closed-form expressions for the exact and the asymptotic secrecy outage probability, and the average secrecy capacity are derived and verified by simulations. Furthermore, the optimal power splitting factor is derived for each ER to realize the tradeoff between the energy harvesting and the information eavesdropping. Our results reveal the impact of the imperfect CSI on the secrecy performance of MISO SWIPT systems in the presence of multiple wiretap channels.
doi_str_mv 10.1109/TCOMM.2016.2573822
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source IEEE Electronic Library (IEL) Journals
subjects Antennas
Array signal processing
Channel state information
Fading channels
MIMO
multiple-input single-output
Receivers
secrecy capacity
secrecy outage probability
simultaneous wireless information and power transfer
Wireless communication
title On Secrecy Performance of MISO SWIPT Systems With TAS and Imperfect CSI
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