Coexistence of WLAN Network With Radar: Detection and Interference Mitigation

Mehrnoush, Morteza; Roy, Sumit

doi:10.1109/tccn.2017.2762663

Cited by 21 publications

(14 citation statements)

References 19 publications

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“…A thorough understanding of the role played by mutual interference in possibly large networks of devices operating both in radar and comm mode is thus paramount for proper system design. From this standpoint, however, research efforts have focused so far mainly on toy topologies, studying interference mitigation techniques [3], [4] or evaluating the effect of radar interference on comm capacity [5]. Initial results in broader setups were offered in [6], proposing a Gaussian model for aggregate interference in an OFDM system, yet the fundamental tradeoffs of radar-comm coexistence remain largely unexplored.…”

Section: Introductionmentioning

confidence: 99%

Performance Tradeoffs of Joint Radar-Communication Networks

Ren

Munari

Petrova

2019

IEEE Wireless Commun. Lett.

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This letter considers a network where nodes share a wireless channel to work in turn as pulse radars for target detection and as transmitters for data exchange. Radar detection range and network throughput are studied using stochastic geometry tools. We derive closed-form expressions that identify the key tradeoffs between radar and communication operations. Results reveal interesting design hints, and stress a marked sensitivity of radar detection to communication interference.

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Section: Introductionmentioning

confidence: 99%

Performance Tradeoffs of Joint Radar-Communication Networks

Ren

Munari

Petrova

2019

IEEE Wireless Commun. Lett.

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“…In a similar setup, [10] provides optimised radar and communications design guidelines considering the structure of mutual interference. The effect of radar transmissions on communications links is also studied in [11] and [8]. In the former work, the performance degradation induced by a Gaussian-approximated radar interference on an uncoded communication system is determined, while [8] proposes modifications to a Wi-Fi receiver that enable faster detection of radar signals and reduce their impact on broadband data links.…”

Section: Related Workmentioning

confidence: 99%

“…The effect of radar transmissions on communications links is also studied in [11] and [8]. In the former work, the performance degradation induced by a Gaussian-approximated radar interference on an uncoded communication system is determined, while [8] proposes modifications to a Wi-Fi receiver that enable faster detection of radar signals and reduce their impact on broadband data links. Interference mitigation techniques based on a cognitive spectrum sharing approach between LTE and radars are explored in [9].…”

Section: Related Workmentioning

confidence: 99%

Performance of Radar and Communication Networks Coexisting in Shared Spectrum Bands

Munari

Grosheva

Mähönen

2019

2019 IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

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Recent technological advancements are making the use of compact, low-cost, low-power mm-wave radars viable for providing environmental awareness in a number of applications, ranging from automotive to indoor mapping and radio resource optimisation. These emerging use-cases pave the road towards networks in which a large number of radar and broadband communications devices coexist, sharing a common spectrum band in a possibly uncoordinated fashion. Although a clear understanding of how mutual interference influences radar and communications performance is key to proper system design, the core tradeoffs that arise in such scenarios are still largely unexplored. In this paper, we provide results that help bridge this gap, obtained by means of an analytical model and extensive simulations. To capture the fundamental interactions between the two systems, we study mm-wave networks where pulsed radars coexist with communications devices that access the channel following an ALOHA policy. We investigate the effect of key parameters on the performance of the coexisting systems, including the network density, fraction of radar and communication nodes in the network, antenna directivity, and packet length. We quantify the effect of mutual interference in the coexistence scenario on radar detection and communication network throughput, highlighting some non-trivial interplays and deriving useful design tradeoffs.

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“…Several studies have investigated the interference effect, and several approaches to using new protection mechanisms in WLAN systems have been reported [3][4][5][6]. However, their scope was confined to demonstrating deteriorated performance due to interference for WLANs, and coexistence by channel avoidance as a passive way [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…However, their scope was confined to demonstrating deteriorated performance due to interference for WLANs, and coexistence by channel avoidance as a passive way [3,4]. Some of the new protection mechanisms require modification of the current standard [5,6].…”

Section: Introductionmentioning

confidence: 99%

Secure Inter-Frame Space Communications for Wireless LANs

Lee

2018

Future Internet

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Abstract:The internet of things (IoTs) offers a wide range of consumer benefits, from personal portable devices to internet-connected infrastructure. The wireless local area network (WLAN) is one of the potential candidates for IoTs technology to connect billions of smart devices. Long-range WLAN is widely deployed in dense networks as an alternative to cellular networks or satellite internet access because of its low cost, high performance, and existing ecosystem. However, due to the nature of unregulated communications in industrial, scientific, and medical (ISM) bands, WLANs experience interferences from other radios such as radars and frequency hopping devices. Once interference is detected at a WLAN device, the channel is avoided and other channels become crowded. Thus, it degrades network throughput and channel utilization. In this paper, a secure inter-frame space communication system design is proposed for WLANs to share the ISM bands with other radio systems that generate periodic radio signals. The proposed secure inter-frame communication scheme achieves the goal by designing accurate radar detection and secure inter-frame space communication.The simulation results demonstrate that the proposed scheme significantly increases the receiver sensitivity and user datagram protocol throughput.

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Coexistence of WLAN Network With Radar: Detection and Interference Mitigation

Cited by 21 publications

References 19 publications

Performance Tradeoffs of Joint Radar-Communication Networks

Performance Tradeoffs of Joint Radar-Communication Networks

Performance of Radar and Communication Networks Coexisting in Shared Spectrum Bands

Secure Inter-Frame Space Communications for Wireless LANs

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