Effects of densensitization on mobile radio system performance, part I: Qualitative analysis

Gavan, J.; Shulman, M.B.

doi:10.1109/t-vt.1984.24020

Cited by 34 publications

(18 citation statements)

References 9 publications

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“…2) Saturation: Secondly, a high-power interferer (below damage levels) can saturate the receiver and as a result desensitize the receiver for the desired signal [8]. A highly selective receiver is not more robust against this interference mechanism: the degradation happens at the RF stage while the selectivity is at the IF stages.…”

Section: ) Damagementioning

confidence: 99%

Protection strategy against IEMI for wireless communication infrastructures

Beek

Stojilović

Mora

et al. 2016

2016 International Symposium on Electromagnetic Compatibility - EMC EUROPE

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Abstract-In this paper, we present a methodology for estimating the protection levels of critical equipment against IEMI. We apply the method to a wireless communication infrastructure, but it can be applied to any critical infrastructure. The required protection levels that need to be implemented are determined by analyzing the susceptibility of the victim, and the threat level associated with a specific IEMI scenario. Based on the required protection levels, possible protection strategies are identified and the associated costs are evaluated. The total cost includes the monetary cost and the costs related to loss of performance. The method we present can be used for a quantitative comparison between different protection techniques in terms of monetary cost. The method is applied to develop a strategy for protecting a wireless receiver from damage due to in-band interference using an RF limiter. We also analyze the loss in performance due to the installation of a limiter. It is shown that the noise figure degradation is linearly dependent on the insertion loss of the limiter.

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Section: ) Damagementioning

confidence: 99%

Protection strategy against IEMI for wireless communication infrastructures

Beek

Stojilović

Mora

et al. 2016

2016 International Symposium on Electromagnetic Compatibility - EMC EUROPE

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“…Of course, the nulling filter with an SC/MMSE based Turbo equalizer in the receiver could be one of its solutions, because ACI can be regarded as a special case for CCI. However, the received power for ACI coming from the same cell is, generally speaking, much higher than the CCI coming from adjacent cells in the cellular systems, thereby high level ACI might cause desensitization in the receiver [16]. This means that it is preferable to prevent ACI by creating null spectrum at both edges of the desired signal in the transmitter side.…”

Section: Introductionmentioning

confidence: 99%

Frequency Domain Nulling Filter and Turbo Equalizer in Suppression of Interference for One-Cell Reused Single-Carrier TDMA Systems

Sritiapetch

Sampei

2009

IEICE Trans. Commun.

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SUMMARYThis paper proposes a frequency domain nulling filter and Turbo equalizer to suppress interference in the uplink of one-cell reuse single-carrier time division multiple access (TDMA) systems. In the proposed system, the desired signal in a reference cell is interfered by interference signals including adjacent-channel interference (ACI), co-channel interference (CCI), and intersymbol interference (ISI). At the transmitter, after a certain amount of spectrum is nulled considering the expected CCI, the suppressed power due to nulling is reallocated to the remaining spectrum components so as to keep the total transmit power constant. In this process, when mitigation of ACI is necessary, after a certain amount of spectrum at both edges is nulled using an edge-removal filter, the aforementioned process is conducted. At the receiver, frequency domain SC/MMSE Turbo equalizer (FDTE) is employed to suppress ISI due to spectrum nulling process in the transmitter as well as the multipath fading. Computer simulations confirm that the proposed scheme is effective in suppression of CCI, ACI and ISI in one-cell reuse single-carrier TDMA systems. key words: interference suppression, nulling filter, frequency domain turbo equalizer, single-carrier transmission

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“…The phenomenon of a desired signal superimposed on a large interferer experiencing gain reduction is called desensitization. A detailed investigation on desensitization is presented in [91]. In this section, the focus is on the gain reduction of the desired signal due to an accompanying high-power interference or a blocker.…”

Section: Saturationmentioning

confidence: 99%

“…Normally, the second principle is the principal cause of desensitization, especially for receivers with a high gain LNA [91,130,131]. The gain compression of a front end is normally dominated by the mixer, since the LNA amplifies the received RF signal [81].…”

Section: Desensitizationmentioning

confidence: 99%

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Vulnerability analysis of the wireless infrastructure to intentional electromagnetic interference

Beek¹

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Effects of densensitization on mobile radio system performance, part I: Qualitative analysis

Cited by 34 publications

References 9 publications

Protection strategy against IEMI for wireless communication infrastructures

Protection strategy against IEMI for wireless communication infrastructures

Frequency Domain Nulling Filter and Turbo Equalizer in Suppression of Interference for One-Cell Reused Single-Carrier TDMA Systems

Vulnerability analysis of the wireless infrastructure to intentional electromagnetic interference

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