A 5 mm$^{2}$ 40 nm LP CMOS Transceiver for a Software-Defined Radio Platform

Ingels, Mark; Giannini, Vito; Borremans, Jonathan; Mandal, Gautam; Debaillie, Björn; Wesemael, Peter Van; Sano, T.; Yamamoto, Takaya; Hauspie, D.; Driessche, Joris Van; Craninckx, Jan

doi:10.1109/jssc.2010.2075210

Cited by 63 publications

(21 citation statements)

References 18 publications

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“…The presented dual-band transceiver covers 400 MHz and 2.4 GHz bands simultaneously. If we limit the discussion to the scope of WBAN/ZigBee applications which needs discontinuous and narrow band covering, the presented transceiver has less complicated circuit structure and consumes less power than the SDR transceivers [13,25] when used for these specific applications. The proposed reconfigurable sliding-IF architecture reduces the required VCO tuning range significantly, and thus dramatically alleviates the design difficulties and saves power consumption.…”

Section: Implementation Resultsmentioning

confidence: 99%

WBAN Transceiver Design

Wang

Jiang

Chen

2013

CMOS IC Design for Wireless Medical and Health Care

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The tremendous progress in wireless medical and health care applications in recent years, as well as the significant improvements in wireless communication and semiconductor technologies, led to the rapid development in the wireless body area networks (WBAN) technologies [1,2], which can be used to connected the PBS and SIDs in the wireless medical/health care systems as shown in Chap. 2. Frequency Bands for WBAN TransceiversThe IEEE 802.15.6 WBAN standard was released by the IEEE LAN/MAN standards committee for the short-range low-power WBAN operated on, in, or around the human body (but not limited to humans) in February, 2012 [3]. The standard physical (PHY) layer defines a narrow band (NB) mode compliant device (hub/node, corresponding to PBS/SID in the application systems) shall be able to support at least one of the following frequency bands: 402-405, 420-450, 863-870, 902-928, 950-958, 2,360-2,400, and 2,400-2,483.5 MHz. Before the 802.15.6 standard was released, IEEE 802.15.4/ZigBee low-rate wireless personal area network (LR-WPAN) standard was also widely used for WBAN devices [4]. The IEEE 802.15.4 standard PHY layer defines its operation on one of the three possible unlicensed frequency bands: 868, 902-928, and 2,400-2,483.5 MHz [5]. In some occasions, the below VHF band is used for WBAN, including 6.78 MHz, 13.56 MHz, 27.15 MHz, and 9-315 kHz for inductive link.The frequency available for WBAN in 400 MHz UHF, 2.4 GHz ISM and UWB bands for different countries and areas are illustrated in Fig. 4.1 [6].Note that in real applications, only the 400 MHz and 2.4 GHz bands are most commonly used for the wireless medical and health care applications, since the 400 MHz band signal has small through-body transmission loss, and the There are three types of wireless communications in WBAN as mentioned below:1. In the body: SID inside human body, PBS outside body 2. On the body: SID and PBS attached to the body 3. Around the body: SID attached to body, PBS near the body Whether to use the 400 MHz band or the 2.4 GHz band depends on the real application conditions. To satisfy the miniaturization and low energy consumption requirements of the different WBAN applications, in-body and on/around-body SIDs (nodes) usually work on different communication frequencies. High frequency helps to reduce the antenna size, and the on/around-body nodes are usually designed in 2.4 GHz band to make their dimensions acceptable. However, the 2.4 GHz electromagnetic wave shows more propagation attenuation through the body tissue than the 400 MHz wave. In some applications, it is a good choice to choose 400 MHz band for in-body nodes to minimize the power consumption. Thanks to the high relative permittivity of the body tissue, which is about 30~60 in different tissues. The antenna of in-body nodes still can be designed in small dimensions. The comparison of the 400 MHz band and the 2.4 GHz band is shown in Table 4.1. Previously reported wireless transceivers for WBAN PBS (hubs) only focused on the 400 MHz or the 2.4 GHz single band op...

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Section: Implementation Resultsmentioning

confidence: 99%

WBAN Transceiver Design

Wang

Jiang

Chen

2013

CMOS IC Design for Wireless Medical and Health Care

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“…In most of the days this corresponds to the third quartile being around 20 %. Interesting here is that these high power measurements would allow portable radio front ends like Scaldio [13], [14], or even much cheaper alternatives, that perform worse to be used as sensing devices. This is because the high energies captured reduces the burden on the circuitry for very sensitive implementations (reducing that way the cost).…”

Section: The Radio Environmentmentioning

confidence: 99%

A week in London: Spectrum usage in metropolitan London

Palaios

Riihijärvi

Holland

et al. 2013

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

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We present results from an 8-day spectrum measurement campaign in the centre of the London metropolis. We analyze results from one of the densest central areas in our campaign from the perspective of spectrum measurements at a very exposed location at the roof of a high building. We present the main results of this measurement campaign in terms of spectrum utilization, powers received, and evolution of the activity among different days. The results presented in this paper here are very close to an upper bound of what one might expect to find in any given radio environment in terms of utilization and received power measurements. In addition to producing valuable measurement data on its own, special attention was given on acquiring comparable datasets with previous measurements campaigns we have conducted to allow direct comparisons with other European cities we have studied. In particular, we show a detailed comparison between the downtown London results against measurements carried out in other cities, quantifying the significantly higher levels of spectrum occupancy in London compared to other locations.

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“…As a result, for selecting a new channel an intelligent approach is required that has a knowledge of other channels. Unlike the previous experiments set, here we exploited the IMEC Sensing Engine [12] to acquire spectrum information. The setup of this scenario is the same as the last experiment with the sensing engine installed at node 24.…”

Section: Dynamismmentioning

confidence: 99%

Dynamic channel selection algorithms for coexistence of wireless sensor networks and wireless LANs

Pakparvar¹,

Gharibdoust

Pollin

et al. 2013

2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

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Due to the advances in wireless technology and spectrum scarcity, unlicensed band heterogeneous networks are growing rapidly. Increasing users of these networks should compete for the shared spectrum. Therefore, interoperability and coexistence of such networks are becoming key issues that require novel media access protocols equipped with dynamic channel selection to avoid harmful interference. In this paper we focus on dynamic channel selection for coexistence of IEEE 802.11 Wireless LAN and IEEE 802.15.4 sensor networks. Dynamic channel selection algorithm can either be implemented on top of an existing wireless sensor network or assisted with an auxiliary spectrum sensing device.In this research couple of dynamic channel selection algorithms have been developed and implemented to evaluate the added value of the auxiliary sensing device. As such, we propose a novel energy-aware metric to detect and quantify the harmfulness of dynamic interference. We also investigated the impact of interference dynamism on algorithms performance and validated the efficiency of the implemented mechanisms by three sets of experiments. Experiments results primarily validate the efficiency of both interference mitigation techniques. Besides, these measurements suggest that the auxiliary sensing device is most beneficial for highly complex interference profiles.

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A 5 mm$^{2}$ 40 nm LP CMOS Transceiver for a Software-Defined Radio Platform

Cited by 63 publications

References 18 publications

WBAN Transceiver Design

WBAN Transceiver Design

A week in London: Spectrum usage in metropolitan London

Dynamic channel selection algorithms for coexistence of wireless sensor networks and wireless LANs

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