Link adaptation for physical layer security over wireless fading channels

Khodakarami, Hamid; Lahouti, Farshad

doi:10.1049/iet-com.2011.0319

Cited by 29 publications

(26 citation statements)

References 15 publications

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“…For example, LA has been proposed as a tool to improve physical layer security in wireless links [36]. Additionally, link adaptation to maximize energy efficiency has been proposed for wireless body area networks (WBAN) [37].…”

Section: Prior Workmentioning

confidence: 99%

Link adaptation for mitigating Earth-to-Space propagation effects on the NASA SCaN testbed

Kilcoyne

Rowe

Headley

et al. 2016

2016 IEEE Aerospace Conference

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In Earth-to-Space communications, well-known propagation effects such as path loss and atmospheric loss can lead to fluctuations in the strength of the communications link between a satellite and its ground station. Additionally, a less-often considered effect of shadowing due to the geometry of the satellite and its solar panels can also lead to link degradation. As a result of these anticipated channel impairments, NASA communication links have been traditionally designed to handle the worst-case impact of these effects through high link margins and static, lower rate, modulation formats. This thesis first characterizes the propagation environment experienced by a software-defined radio on the NASA SCaN Testbed through a full link-budget analysis. Then, the following chapters propose, design, and model a link adaptation algorithm to provide an improved trade-off between data rate and link margin through varying the modulation format as the received signal-to-noise operate at the most robust transmitting configuration, ensuring a low error-rate. However, with this worst-case method, the trade-off manifests in the very constrained data rate-although the data is transmitted with minimal errors, the throughput also remains low. This thesis first outlines the propagation environment experienced by a communications signal originating in Cleveland, OH and traveling to a software-defined radio on the NASA SCaN Testbed. Then, a link adaptation algorithm is designed and simulated to provide an improved trade-off between data rate and bit error rate. This flexibility between transmitting configurations allows for communications to be more efficient, as the transmitter can adapt as the signal strength improves.

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Section: Prior Workmentioning

confidence: 99%

Link adaptation for mitigating Earth-to-Space propagation effects on the NASA SCaN testbed

Kilcoyne

Rowe

Headley

et al. 2016

2016 IEEE Aerospace Conference

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show abstract

“…Next, we use the results within Algorithm 1, which yields the optimum TM n and choice of cooperating relays M C in presence of the constraint C2 in (10). In fact, Algorithm 1 identifies the largest TM n (rate) for which the set of cooperating relays leading to maximum γ eq in subproblem (11) satisfies C2 in (10).…”

Section: A Exact Solutionmentioning

confidence: 99%

“…To this end, design of sharp punctured LDPC codes for which the bit error rate (BER) curve falls sharply from high BERs to very low BERs (steep waterfall region), is considered in [10]. Yet, adaptive transmission may be exploited to enhance the system performance over time-varying channels both in terms of security and reliability [11].…”

Section: Introductionmentioning

confidence: 99%

Link Adaptation with Untrusted Relay Assignment: Design and Performance Analysis

Khodakarami

Lahouti

2013

IEEE Trans. Commun.

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In this paper, a link adaptation and untrusted relay assignment (LAURA) framework for efficient and reliable wireless cooperative communications with physical layer security is proposed. Using sharp channel codes in different transmission modes, reliability for the destination and security in the presence of untrusted relays (low probability of interception) are provided through rate and power allocation. Within this framework, several schemes are designed for highly spectrally efficient link adaptation and relay selection, which involve different levels of complexity and channel state information requirement. Analytical and simulation performance evaluation of the proposed LAURA schemes are provided, which demonstrates the effectiveness of the presented designs. The results indicate that power adaptation at the source plays a critical role in spectral efficiency performance. Also, it is shown that relay selection based on the signal to noise ratio of the source to relays channels provides an interesting balance of performance and complexity within the proposed LAURA framework. Index TermsAmplify-and-forward relaying, cooperative communications, link adaptation, physical layer security, relay selection, untrusted relay.

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“…In [2][3][4], physicallayer security (PLS) was further analyzed for Gaussian channels, broadcast channels, and wireless fading channels, respectively. A secure link adaptation for PLS was proposed in [5], which improved the communication performance in the presence of eavesdropper. In [6], the authors presented the relay selection scheme for PLS in cognitive radio networks which was analyzed in many cases such as in one and multiple eavesdropper nodes, in one or multiple primary users.…”

Section: Introductionmentioning

confidence: 99%

Binary Jamming Message Solutions for Source-Wiretapping Under Physical-Layer Security: Analysis and Design

Nguyen

Kong

2015

Wireless Pers Commun

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A distributed zero-beamforming-based cooperative jamming technique is useless when an eavesdropper detects the sharing seed. Further, currently alternatives are very limited when the eavesdropper is located near a source for wiretapping. This paper presents some solutions for this extreme case. The jammer node, which can be a relay or destination node, randomly generates and transmits a binary jamming message to both source and destination or to both source and relay node in the first phase. When these two receivers securely and correctly decode the message, the source creates and transmits another message based on the decoded message and the use of exclusive-or for its information message. Consequently, the next transmission can avoid the eavesdropping. We present a comparison between the proposed protocols and conventional protocols that do not send a binary jamming message. The system performance is analyzed and evaluated in terms of the exact closed-form outage probability over Reyleigh fading channels. The simulation results using a Monte-Carlo simulation are in complete agreement with the theoretical results.

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Link adaptation for physical layer security over wireless fading channels

Cited by 29 publications

References 15 publications

Link adaptation for mitigating Earth-to-Space propagation effects on the NASA SCaN testbed

Link adaptation for mitigating Earth-to-Space propagation effects on the NASA SCaN testbed

Link Adaptation with Untrusted Relay Assignment: Design and Performance Analysis

Binary Jamming Message Solutions for Source-Wiretapping Under Physical-Layer Security: Analysis and Design

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