Impulse radio: how it works

Win, Moe Z.; Scholtz, R.A.

doi:10.1109/4234.660796

Cited by 1,904 publications

(974 citation statements)

References 3 publications

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“…The pulses are further dithered withina bin based on the information bit of the signal. The reception of an impulse radio signal is performed bya correlator [13]. A template signal is applied to the received signal to retrieve the original pulse train.…”

Section: 2impulse Radiomentioning

confidence: 99%

A Self-Organizing Link Layer Protocol for UWB Ad Hoc Networks

Shi

Niemegeers

2004

Personal Wireless Communications

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Abstract. Ultra Wide Band (UWB)impulse radio is a promising technology for future short-range, low-power, low cost and high data ratead hoc networks.The technology isbeing explored in a number of research projects. While most UWB research for this class of networksisconcentrating on the physicall ayer, little researchh as been published on link layer protocols which exploit the specifics of UWB impulse r adio. In t his paper, w e focus on t he selforganization concept and the peculiarities of UWB technology from aphysical and a link layer point of view. Anovel self-organizing link layerprotocol based on time hopping spread spectrum is proposed in thispaper.This protocol promisest obean efficient and collision-free mechanism t hat enables the devices tod iscover neighbornodes and arrange the access to communication resources shared among the nodes. The adjustable parameters of the protocol enable the network to adapt to a dynamic environment. 1IntroductionArange of services supporting future mobile applications are expected to require high data rates, high communicationquality and efficient network access. A case in point is mobile interactive gaming, where fast transmission of image and voice in dynamic environments is a prerequisite.Wireless networks that meet these expectations will have a hybrid character, consisting mainly of ad hoc networks with occasional access to infrastructures, in order to reachremote nodes or infrastructure-based servers. They will have tooperate completely automatically without t he interventiono f s ystem administrators, and therefore will haveto be self-organizing. Self-organization in this context implies the automatic finding of neighbor nodes, the creation of connections, the scheduling of transmissions and the determining of routes. This should be performed in a distributed manner sothat all nodes in t he network are able t o exchange information and reconfigure the network when nodes join or leave, or when radio linksare broken or established.A promising but, because of implementation difficulties, notw ell explored radio technology is UWB impulse radio. This technology has a lot of potentialf or high-* This researchi spart of the AIRLINK project funded by the Dutch Ministry of Economic Affairs under the Freeband Impulse Program.

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Section: 2impulse Radiomentioning

confidence: 99%

A Self-Organizing Link Layer Protocol for UWB Ad Hoc Networks

Shi

Niemegeers

2004

Personal Wireless Communications

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“…OOK uses one pulse to transmit '1' and silence to transmit '0'. The IR paradigm in general and the OOK in particular are known to be resistant to multipath, due to the time resolution used [10,11] -which avoids the narrow-band fading. In IR this is achieved by separating the pulses in such a way the reflected pulses do not interfere with the subsequent pulses.…”

Section: Introductionmentioning

confidence: 99%

“…UWB offers high-bandwidth communications for shortrange and very low energy level using a large portion of the radio spectrum [9]. In the context of UWB techniques, Impulse Radio (IR) [10] encodes the information by means of pulses, which have a short duration in time and occupy a large bandwidth. Among the different modulation schemes proposed, On-Off-Keying (OOK) is the simplest one, imposing very low requirements to the transceiver and at the same time offering high datarate transmissions.…”

Section: Introductionmentioning

confidence: 99%

Pulse interspersing in static multipath chip environments for Impulse Radio communications

Mestres

Abadal

Llátser

et al. 2016

Nano Communication Networks

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Communications are becoming the bottleneck in the performance of Chip Multiprocessor (CMP). To address this issue, the use of wireless communications within a chip has been proposed, since they offer a low latency among nodes and high reconfigurability. The chip scenario has the particularity that is static, and the multipath can be known a priori. Within this context, we propose in this paper a simple yet very efficient modulation technique, based on Impulse Radio -On-Off-Keying (IR-OOK), which significantly optimizes the performance in Wireless Network-on-Chip (WNoC) as well as off-chip scenarios. This technique is based on interspersing information pulses among the reflected pulses in order to reduce the time between pulses, thus increasing the data rate. We prove that the final data rate can be considerably increased without increasing the hardware complexity of the transceiver.

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“…Ultra wideband impulse radio (UWB-IR) makes use of ultrashort (,1 ns) base band pulses to communicate, thereby spreading the energy of the radio signal very thinly over extremely large frequency bandwidths [1]. Given their very large bandwidth, the UWB-IR systems must share the spectrum with other users as well as with the existing communication systems.…”

Section: Introductionmentioning

confidence: 99%

“…The reason for all these excitements is that this technology promises to deliver both high data rate personal-area network wireless connectivity as well as longerrange, low data rate communication, with efficient utilization of scarce radio bandwidth in realistic multi-path environments, all while consuming very little power and silicon area. It is expected that UWB devices will provide low cost solutions that can satisfy the consumer's insatiable appetite for data rates spawning new consumer market segments.Ultra wideband impulse radio (UWB-IR) makes use of ultrashort (,1 ns) base band pulses to communicate, thereby spreading the energy of the radio signal very thinly over extremely large frequency bandwidths [1]. Given their very large bandwidth, the UWB-IR systems must share the spectrum with other users as well as with the existing communication systems.…”

mentioning

confidence: 99%

Mitigation of wideband interference on UWB-IR transmission using multi-carrier templates

Лакшманан¹,

Nikookar²

2009

Int. j. microw. wirel. technol.

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Ultra wideband (UWB) wireless systems are highly susceptible to interference from other services. To reduce the effect of interference from co-existing sources such as the WLAN standard IEEE 802.11a on UWB Communication, the construction of a modified template waveform using multi-carrier sinusoids is proposed in Ohno and Ikegami (2003), Ohno et al. (2004), Ikegami (2006), andNikookar (2007). However, the work in Ohno and Ikegami (2003), Ohno et al. (2004), Ohno and Ikegami (2006), and Lakshmanan and Nikookar (2007) considers a free space propagation channel model with no treatment of the frequency dependence of the path loss. In this paper, we broaden the study by taking into consideration a frequency-dependent path loss environment. The novelty of the work is in the investigation of the effect of frequency dependency of the path loss on the performance of interference mitigation schemes.Keywords: Impulse radio, Interference mitigation, Multi-carrier type pulses, Template waveforms, Frequency-dependent path loss I . I N T R O D U C T I O NUltra-wideband (UWB) communication systems have received significant attention from industry, media, and academia alike. The reason for all these excitements is that this technology promises to deliver both high data rate personal-area network wireless connectivity as well as longerrange, low data rate communication, with efficient utilization of scarce radio bandwidth in realistic multi-path environments, all while consuming very little power and silicon area. It is expected that UWB devices will provide low cost solutions that can satisfy the consumer's insatiable appetite for data rates spawning new consumer market segments.Ultra wideband impulse radio (UWB-IR) makes use of ultrashort (,1 ns) base band pulses to communicate, thereby spreading the energy of the radio signal very thinly over extremely large frequency bandwidths [1]. Given their very large bandwidth, the UWB-IR systems must share the spectrum with other users as well as with the existing communication systems. Even though UWB systems have high processing gain, and operate at very low power (due to regulations), they are highly susceptible to interference. And performance degradation of UWB communication due to interference from other co-existing services is a major issue. By using template waveforms derived from multi-carrier sinusoids at the transceiver, the interference power can to a large extent be mitigated [2][3][4][5]. The template waveforms are constructed by representing the UWB transmission waveform with multi-carrier sinusoids and by selectively removing those sub-carriers whose spectral footprints fall near the interference spectrum. This way the UWB signal spectrum is sculpted to avoid the regions of interference. Through simulation studies it is proven that such an interference mitigation technique is effective, allowing for coexistence with different wideband systems.However, these efforts employ a free space propagation model with no consideration for the frequency dependence of the UWB signal...

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Impulse radio: how it works

Cited by 1,904 publications

References 3 publications

A Self-Organizing Link Layer Protocol for UWB Ad Hoc Networks

A Self-Organizing Link Layer Protocol for UWB Ad Hoc Networks

Pulse interspersing in static multipath chip environments for Impulse Radio communications

Mitigation of wideband interference on UWB-IR transmission using multi-carrier templates

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