Outage Probability Under Channel Distribution Uncertainty

Ioannou, Ioanna; Charalambous, Charalambos D.; Loyka, Sergey

doi:10.1109/tit.2012.2210190

Cited by 17 publications

(2 citation statements)

References 31 publications

(108 reference statements)

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“…The analysis of outage probability is of great importance to estimate fading capacities in a fading environment. A typical example is the outage estimation for fading multiple-input and multiple-output (MIMO) channels [39,40].…”

Section: Rlwe-based Pke Channel Model With Outagementioning

confidence: 99%

How to Construct Polar Codes for Ring-LWE-Based Public Key Encryption

Wang

Ling

2021

Entropy

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There exists a natural trade-off in public key encryption (PKE) schemes based on ring learning with errors (RLWE), namely: we would like a wider error distribution to increase the security, but it comes at the cost of an increased decryption failure rate (DFR). A straightforward solution to this problem is the error-correcting code, which is commonly used in communication systems and already appears in some RLWE-based proposals. However, applying error-correcting codes to those cryptographic schemes is far from simply installing an add-on. Firstly, the residue error term derived by decryption has correlated coefficients, whereas most prevalent error-correcting codes with remarkable error tolerance assume the channel noise to be independent and memoryless. This explains why only simple error-correcting methods are used in existing RLWE-based PKE schemes. Secondly, the residue error term has correlated coefficients leaving accurate DFR estimation challenging even for uncoded plaintext. It can be found in the literature that a tighter DFR estimation can effectively create a DFR margin. Thirdly, most error-correcting codes are not well designed for safety considerations, e.g., syndrome decoding has a nonconstant time nature. A code good at error correcting might be weak under a variety of attacks. In this work, we propose a polar coding scheme for RLWE-based PKE. A relaxed “independence” assumption is used to derive an uncorrelated residue noise term, and a wireless communication strategy, outage, is used to construct polar codes. Furthermore, some knowledge about the residue noise is exploited to improve the decoding performance. With the parameterization of NewHope Round 2, the proposed scheme creates a considerable DRF margin, which gives a competitive security improvement compared to state-of-the-art benchmarks. Specifically, the security is improved by 28.8%, while a DFR of 2−149 is achieved a for code rate pf 0.25, n=1024,q= 12,289, and binomial parameter k=55. Moreover, polar encoding and decoding have a quasilinear complexity O(Nlog2N) and intrinsically support constant-time implementations.

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Section: Rlwe-based Pke Channel Model With Outagementioning

confidence: 99%

How to Construct Polar Codes for Ring-LWE-Based Public Key Encryption

Wang

Ling

2021

Entropy

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“…Therefore, the imperfectness of CDIs should be taken into account. Generally, such consideration can be performed by assuming that the true distribution differs from the nominal distribution by the value known as Kullback-Leibler distance [39] and incorporate such inaccuracy into problem formulation [40]- [42]. We investigate imperfect CDI through two parametric and nonparametric methods.…”

Section: A CDI Estimation Errormentioning

confidence: 99%

Limited Feedback Scheme for Device-to-Device Communications in 5G Cellular Networks with Reliability and Cellular Secrecy Outage Constraints

Alavi

Yamchi

Javan

et al. 2017

IEEE Trans. Veh. Technol.

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In this paper, we propose a device to device (D2D) communication scenario underlaying a cellular network where both D2D and cellular users (CUs) are discrete power-rate systems with limited feedback from the receivers. It is assumed that there exists an adversary which wants to eavesdrop on the information transmission from the base station (BS) to CUs. Since D2D communication shares the same spectrum with cellular network, cross interference must be considered. However, when secrecy capacity is considered, the interference caused by D2D communication can help to improve the secrecy communications by confusing the eavesdroppers. Since both systems share the same spectrum, cross interference must be considered. We formulate the proposed resource allocation into an optimization problem whose objective is to maximize the average transmission rate of D2D pair in the presence of the cellular communications under average transmission power constraint. For the cellular network, we require a minimum average achievable secrecy rate in the absence of D2D communication as well as a maximum secrecy outage probability in the presence of D2D communication which should be satisfied. Due to high complexity convex optimization methods, to solve the proposed optimization problem, we apply Particle Swarm Optimization (PSO) which is an evolutionary approach. Moreover, we model and study the error in the feedback channel and the imperfectness of channel distribution information (CDI) using parametric and nonparametric methods. Finally, the impact of different system parameters on the performance of the proposed scheme is investigated through simulations. The performance of the proposed scheme is evaluated using numerical results for different scenarios.

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Relay selection for peer-to-peer cooperative OFDMA with channel distribution uncertainty

Chen

et al. 2014

Peer-to-Peer Netw. Appl.

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Outage Probability Under Channel Distribution Uncertainty

Cited by 17 publications

References 31 publications

How to Construct Polar Codes for Ring-LWE-Based Public Key Encryption

How to Construct Polar Codes for Ring-LWE-Based Public Key Encryption

Limited Feedback Scheme for Device-to-Device Communications in 5G Cellular Networks with Reliability and Cellular Secrecy Outage Constraints

Relay selection for peer-to-peer cooperative OFDMA with channel distribution uncertainty

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