Security Challenges with LTE-Advanced Systems and Military Spectrum

Clancy, T. Charles; Norton, Mark; Lichtman, Marc

doi:10.1109/milcom.2013.71

Cited by 14 publications

(12 citation statements)

References 9 publications

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“…As stated in [8], if interference significantly impacts control frames, the recipient may be capable of demodulating the data frames, however, without the control frames they are unlikely to be properly interpreted. Wrong decoding of control channels can have severe consequences, especially if it remains undetected.…”

Section: Discussionmentioning

confidence: 99%

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Analysis and Mitigation of Interference to the LTE Physical Control Format Indicator Channel

Kakar

McDermott

Garg

et al. 2014

2014 IEEE Military Communications Conference

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In LTE, the Physical Control Format Indicator Channel (PCFICH) is a downlink control channel that indicates the number of OFDM symbols used by the primary downlink control channel in each subframe. Even though the PCFICH only carries two bits of control information, it is essential to the operation of LTE. Since the PCFICH is a vital physical channel that only occupies a small fraction of the downlink signal, it acts as a weak link in terms of vulnerability to targeted interference. Due to recent interest in using LTE for military and public safety applications, it would be beneficial to better understand this vulnerability. This paper investigates the performance of the PCFICH under various harsh wireless conditions and proposes strategies to prevent interference against the PCFICH from causing link degradation.

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Section: Discussionmentioning

confidence: 99%

“…The authors of [7] propose various methods of enhancing the robustness of LTE networks against jamming. Additional security challenges with LTE and military spectrum are highlighted in [8]. This paper provides a more comprehensive analysis of the vulnerability of the PCFICH and outlines a few mitigation techniques.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Mitigation of Interference to the LTE Physical Control Format Indicator Channel

Kakar

McDermott

Garg

et al. 2014

2014 IEEE Military Communications Conference

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“…Spectrally redundant information which does not vary with time, either present in the PMW or the interference, can be included in (31) and (32) …”

Section: Paramorphic Fresh Demodulatormentioning

confidence: 99%

“…Cognitive radios most commonly adapt waveform parameters such as transmit power, modulation type and order, and code rate and type to satisfy objectives of BER, throughput, and spectral efficiency [23,31]. The ability to design the waveform for interference mitigation using symbol repetition allows for another degree of freedom within the optimization.…”

Section: Joint Optimization Of Waveform and Demodulatormentioning

confidence: 99%

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Paramorphic multicarrier communications for interference mitigation

Carrick

Reed

Spooner

2018

EURASIP J. Adv. Signal Process.

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This paper presents a novel method for enabling communication in cyclostationary interference limited environments by adaptively inserting and exploiting spectral redundancy in an orthogonal frequency division multiplexing (OFDM) signal. The redundancy is formed through repeating data symbols across OFDM symbols in both time and frequency. A novel frequency shift (FRESH) filter is applied to exploit the time-varying cyclostationary properties, enabling the communication while under interference. The ability to design an interference mitigating property into the communication signal creates a new degree of freedom when optimizing and adapting a waveform's parameters. Simulation results demonstrate the performance gains in both signal to interference and noise ratio (SINR) and bit error rate (BER) as compared to traditional time-invariant optimal filtering techniques and error correcting codes (ECC).

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