Secrecy DoF of Blind MIMOME Wiretap Channel With Delayed CSIT

Lashgari, Sina; Avestimehr, A. Salman

doi:10.1109/tifs.2017.2756602

Cited by 13 publications

(4 citation statements)

References 32 publications

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“…The study of SDoF with delayed feedback was initiated from the scenario of broadcast channel [8]- [13]. In [8], the SDoF region of the two-user MIMO broadcast channel with delayed CSIT was characterized, where the transmitter and receivers have arbitrary antennas.…”

Section: Related Workmentioning

confidence: 99%

“…In [12], with alternating current CSIT, delayed CSIT, and no CSIT, the SDoF region of two-user MISO broadcast channel was characterized. The study of [13] derived the sum-SDoF of the multiple-input multiple-output multiple-eavesdropper wiretap channel (MIMOME), where the transmitter wants to communicate with a legitimate receiver with delayed CSIT in the presence of many eavesdroppers with no CSIT.…”

Section: Related Workmentioning

confidence: 99%

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On Secure Degrees of Freedom of the MIMO Interference Channel with Local Output Feedback

Zhang

Wang

et al. 2021

Preprint

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This paper studies the problem of sum-secure degrees of freedom (SDoF) of the (M, M, N, N ) multiple-input multiple-output (MIMO) interference channel with local output feedback, so as to build an information-theoretic foundation and provide practical transmission schemes for 6G-enabled vehiclesto-vehicles (V2V). For this problem, we propose two novel transmission schemes, i.e., the interference decoding scheme and the interference alignment scheme, and thus establish a sum-SDoF lower bound. In particular, to optimize the phase duration, we analyze the security and decoding constraints and formulate a linear-fractional optimization problem. Furthermore, we show that the derived sum-SDoF lower bound is the sum-SDoF for M ≤ N/2, N = M , and 2N ≤ M antenna configurations, and reveal that for a fixed N , the optimal M to maximize the sum-SDoF is not less than 2N . Through simulations, we examine the secure sum-rate performance of proposed transmission schemes, and reveal that using local output feedback can lead to a higher secure sum-rate than that by using delayed channel state information at the transmitter.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

On Secure Degrees of Freedom of the MIMO Interference Channel with Local Output Feedback

Zhang

Wang

et al. 2021

Preprint

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“…Thereafter, the SDoF regions of two-user multiple-input single-output (MISO) BCCM with alternating CSIT was derived in [11]. The linear SDoF of blind multi-user MISO wiretap channel with delayed CSIT was characterized in [12]. Recently, in [13], the interplay of link connectivity and alternating CSIT in MISO BCCM was studied from the SDoF perspective.…”

Section: Introductionmentioning

confidence: 99%

Full-Duplex Relay with Delayed CSI Elevates the SDoF of the MIMO X Channel

Zhang

Chen

Wang

et al. 2021

Entropy

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In this article, the sum secure degrees-of-freedom (SDoF) of the multiple-input multiple-output (MIMO) X channel with confidential messages (XCCM) and arbitrary antenna configurations is studied, where there is no channel state information (CSI) at two transmitters and only delayed CSI at a multiple-antenna, full-duplex, and decode-and-forward relay. We aim at establishing the sum-SDoF lower and upper bounds. For the sum-SDoF lower bound, we design three relay-aided transmission schemes, namely, the relay-aided jamming scheme, the relay-aided jamming and one-receiver interference alignment scheme, and the relay-aided jamming and two-receiver interference alignment scheme, each corresponding to one case of antenna configurations. Moreover, the security and decoding of each scheme are analyzed. The sum-SDoF upper bound is proposed by means of the existing SDoF region of two-user MIMO broadcast channel with confidential messages (BCCM) and delayed channel state information at the transmitter (CSIT). As a result, the sum-SDoF lower and upper bounds are derived, and the sum-SDoF is characterized when the relay has sufficiently large antennas. Furthermore, even assuming no CSI at two transmitters, our results show that a multiple-antenna full-duplex relay with delayed CSI can elevate the sum-SDoF of the MIMO XCCM. This is corroborated by the fact that the derived sum-SDoF lower bound can be greater than the sum-SDoF of the MIMO XCCM with output feedback and delayed CSIT.

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“…Since the transmitters do not have the eavesdropper's CSIT, the output at the K antennas of the eavesdropper are entropy symmetric [3], i.e., any two subsets of the antenna outputs have the same differential entropy, if the subsets are of equal size. Finally, we use a MIMO version of the least alignment lemma [4,5], which states that the differential entropy at the output of the terminal which does not provide CSIT is the greatest among terminals having equal number of antennas. Intuitively, this holds since no signal alignment is possible at the output of the terminal which does not provide CSIT.…”

Section: Introductionmentioning

confidence: 99%

Secrecy in MIMO Networks with No Eavesdropper CSIT

Mukherjee

Ulukuş

2017

IEEE Trans. Commun.

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We consider two fundamental multi-user channel models: the multiple-input multipleoutput (MIMO) wiretap channel with one helper (WTH) and the MIMO multiple access wiretap channel (MAC-WT). In each case, the eavesdropper has K antennas while the remaining terminals have N antennas each. We consider a fast fading channel where the channel state information (CSI) of the legitimate receiver is available at the transmitters but no channel state information at the transmitters (CSIT) is available for the eavesdropper's channel. We determine the optimal sum secure degrees of freedom (s.d.o.f.) for each channel model for the regime K ≤ N , and show that in this regime, the MAC-WT channel reduces to the WTH in the absence of eavesdropper CSIT. For the regime N ≤ K ≤ 2N , we obtain the optimal linear s.d.o.f., and show that the MAC-WT channel and the WTH have the same optimal s.d.o.f. when restricted to linear encoding strategies. In the absence of any such restrictions, we provide an upper bound for the sum s.d.o.f. of the MAC-WT chanel in the regime N ≤ K ≤ 2N . Our results show that unlike in the single-input single-output (SISO) case, there is loss of s.d.o.f. for even the WTH due to lack of eavesdropper CSIT when K ≥ N .

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Secrecy DoF of Blind MIMOME Wiretap Channel With Delayed CSIT

Cited by 13 publications

References 32 publications

On Secure Degrees of Freedom of the MIMO Interference Channel with Local Output Feedback

On Secure Degrees of Freedom of the MIMO Interference Channel with Local Output Feedback

Full-Duplex Relay with Delayed CSI Elevates the SDoF of the MIMO X Channel

Secrecy in MIMO Networks with No Eavesdropper CSIT

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