Relevant bibliographies by topics / Outdoor channel

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Outdoor channel'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Outdoor channel.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Outdoor channel"

1

Jing Liang and Qilian Liang. "Outdoor Propagation Channel Modeling in Foliage Environment." IEEE Transactions on Vehicular Technology 59, no. 5 (2010): 2243–52. http://dx.doi.org/10.1109/tvt.2010.2043697.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Wang, Wei, Thomas Jost, Uwe-Carsten Fiebig, and Wolfgang Koch. "A Time Variant Outdoor-to-Indoor Channel Model for Mobile Radio Based Navigation Applications." International Journal of Antennas and Propagation 2015 (2015): 1–19. http://dx.doi.org/10.1155/2015/375346.

Full text
Abstract:
Time based positioning with terrestrial mobile radio signals has gained remarkable attention. To develop and validate positioning algorithms under realistic conditions, an accurate knowledge of the propagation channel is significant. However, there is still a lack of outdoor-to-indoor channel models suitable for positioning applications. To be applicable for positioning, the channel model has to fulfill three requirements that have not been accurately considered so far: the non-line-of-sight bias (affecting ranging accuracy), nondiscrete valued channel parameters (affecting algorithm performance), and the evolution of individual multipath components (MPCs) with time (affecting tracking performance). In this paper, an outdoor-to-indoor channel model is proposed based on an extension of the geometry-based stochastic modeling approach to fulfill the requirements. We consider MPCs occurring due to reflection, scattering, and combinations of both. In the model, three different types of MPCs are modeled separately according to their characteristics. Each MPC is represented by a fixed scatterer, which has a fixed position while the receiver antenna is moving. The parameters of the outdoor-to-indoor channel model are extracted from two channel measurement campaigns. The proposed outdoor-to-indoor channel model is capable of accurately simulating the time variant channel. A comparison of the channel model with the channel measurement data is performed by comparing statistics.
APA, Harvard, Vancouver, ISO, and other styles
3

Kalam, M. Zatiar Erwan, Ni Made Ary Esta Dewi Wirastuti, and I. Made Oka Widyantara. "Analisa Kinerja Penerapan Standard Protokol Keamanan IEEE 802.11 Pada Layanan Wireless Fidelity." Majalah Ilmiah Teknologi Elektro 20, no. 1 (March 1, 2021): 89. http://dx.doi.org/10.24843/mite.2021.v20i01.p10.

Full text
Abstract:
Jaringan komunikasi semakin bergantung pada WLAN, maka semakin tinggi tuntutan Quality of Service (QoS) WLAN seperti Throughput, delay, dan jitter Untuk menjaga keamanan media komunikasi data, maka digunakan mekanisme keamanan jaringan Wired Equivalent Privacy (WEP), WiFi Protected Access (WPA), dan WPA2 [14]. Mall Bali Galeria memiliki beberapa alternatif Free WiFi. Banyaknya Wi-Fi yang terpasang menimbulkan permasalahan interferensi yang mempengaruhi unjuk kerja jaringan WiFi, MBG sendiri memiliki area Indoor dan Outdoor, Alternatif untuk mengatasi interferensi adalah dengan melakukan automasi penkanalan dengan menerapkan Channel Fly, Background Scanning dan Static Channel. Dari mekanisme keamanan, Penkanalan dan frekuensi dibuat skenario dilakukan penelitian pada setiap askes point untuk mendapatkan skenario terbaik, dari skenario yang diajukan, nilai Paket loss terbaik lingkungan indoor AP 4 dengan skenario frekuensi 5Ghz, Statik Channel, WEP-64 paket loss 0,016 ms, lingkungan outdoor AP 5 Frekuensi 5Ghz, Channel Fly, WEP-64 paket loss 0.094 ms, nilai Jitter terbaik lingkungan indoor AP 2 5Ghz Background Scanning, WPA 2, Jitter 1.336 ms, lingkungan outdoor AP 8 5Ghz, Statik Channel, WPA2-Mixed Jitter 1,116 ms, nilai Throughput terbaik lingkungan indoor AP 1 5Ghz, Statik channel, WPA2-Mixed, Throughput 78,7Mbps, untuk Outdoor AP 8 5Ghz, Background Scanning, Disable Security, Throughput 80Mbps jika dibandingkan dengan skenario eksisting performa unjuk kerja meningkat sebesar 10-30%. WEP memiliki nilai packet loss baik tetapi memiliki nilai Throughput yang lebih kecil. Static channel disarankan pada lokasi yang memiliki interferensi tinggi.
APA, Harvard, Vancouver, ISO, and other styles
4

Kristem, Vinod, Seun Sangodoyin, C. Umit Bas, Martin Kaske, Juho Lee, Christian Schneider, Gerd Sommerkorn, Charlie Jianzhong Zhang, R. S. Thoma, and Andreas F. Molisch. "3D MIMO Outdoor-to-Indoor Propagation Channel Measurement." IEEE Transactions on Wireless Communications 16, no. 7 (July 2017): 4600–4613. http://dx.doi.org/10.1109/twc.2017.2700391.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Lin, Bai Lin. "Image Haze Removal Based Dark Channel Prior." Applied Mechanics and Materials 536-537 (April 2014): 186–91. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.186.

Full text
Abstract:
This paper describes the image based on dark channel prior to fog. Dark colors from the statistical laws of outdoor priori no fog image database, it was such a key observation was based on the fact that - the vast majority of each local area outdoor image without fog are present strength of certain of at least one color channel low value pixels. Using this model building, directly estimate the concentration of fog and mist removal recover high quality interference image. Experiments show that the dark channel prior to remove the image haze becomes simple and effective.
APA, Harvard, Vancouver, ISO, and other styles
6

Coelho, F. V. S., E. Cataldo, and L. J. Matos. "Simulation of Indoor-Outdoor and Outdoor-Indoor Radio Channel in 960-1700 MHz Band." IEEE Latin America Transactions 15, no. 8 (2017): 1400–1406. http://dx.doi.org/10.1109/tla.2017.7994785.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hamid-Adiamoh, Majidah, Davis Nwakanma, Benoit Sessinou Assogba, Mamadou Ousmane Ndiath, Umberto D’Alessandro, Yaw A. Afrane, and Alfred Amambua-Ngwa. "Influence of insecticide resistance on the biting and resting preferences of malaria vectors in the Gambia." PLOS ONE 16, no. 6 (June 24, 2021): e0241023. http://dx.doi.org/10.1371/journal.pone.0241023.

Full text
Abstract:
Background The scale-up of indoor residual spraying and long-lasting insecticidal nets, together with other interventions have considerably reduced the malaria burden in The Gambia. This study examined the biting and resting preferences of the local insecticide-resistant vector populations few years following scale-up of anti-vector interventions. Method Indoor and outdoor-resting Anopheles gambiae mosquitoes were collected between July and October 2019 from ten villages in five regions in The Gambia using pyrethrum spray collection (indoor) and prokopack aspirator from pit traps (outdoor). Polymerase chain reaction assays were performed to identify molecular species, insecticide resistance mutations, Plasmodium infection rate and host blood meal. Results A total of 844 mosquitoes were collected both indoors (421, 49.9%) and outdoors (423, 50.1%). Four main vector species were identified, including An. arabiensis (indoor: 15%, outdoor: 26%); An. coluzzii (indoor: 19%, outdoor: 6%), An. gambiae s.s. (indoor: 11%, outdoor: 16%), An. melas (indoor: 2%, outdoor: 0.1%) and hybrids of An. coluzzii-An. gambiae s.s (indoors: 3%, outdoors: 2%). A significant preference for outdoor resting was observed in An. arabiensis (Pearson X2 = 22.7, df = 4, P<0.001) and for indoor resting in An. coluzzii (Pearson X2 = 55.0, df = 4, P<0.001). Prevalence of the voltage-gated sodium channel (Vgsc)-1014S was significantly higher in the indoor-resting (allele freq. = 0.96, 95%CI: 0.78–1, P = 0.03) than outdoor-resting (allele freq. = 0.82, 95%CI: 0.76–0.87) An. arabiensis population. For An. coluzzii, the prevalence of most mutation markers was higher in the outdoor (allele freq. = 0.92, 95%CI: 0.81–0.98) than indoor-resting (allele freq. = 0.78, 95%CI: 0.56–0.86) mosquitoes. However, in An. gambiae s.s., the prevalence of Vgsc-1014F, Vgsc-1575Y and GSTe2-114T was high (allele freq. = 0.96–1), but did not vary by resting location. The overall sporozoite positivity rate was 1.3% (95% CI: 0.5–2%) in mosquito populations. Indoor-resting An. coluzzii had mainly fed on human blood while indoor-resting An. arabiensis fed on animal blood. Conclusion In this study, high levels of resistance mutations were observed that could be influencing the mosquito populations to rest indoors or outdoors. The prevalent animal-biting behaviour demonstrated in the mosquito populations suggest that larval source management could be an intervention to complement vector control in this setting.
APA, Harvard, Vancouver, ISO, and other styles
8

Al-Samman, Ahmed M., Tharek Abd Rahman, Marwan Hadri Azmi, and Ibraheem Shayea. "Path Loss Model and Channel Capacity for UWB–MIMO Channel in Outdoor Environment." Wireless Personal Communications 107, no. 1 (March 16, 2019): 271–81. http://dx.doi.org/10.1007/s11277-019-06253-w.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Yu, Yawei, Jianhua Zhang, Mansoor Shafi, Min Zhang, and Jawad Mirza. "Statistical Characteristics of Measured 3-Dimensional MIMO Channel for Outdoor-to-Indoor Scenario in China and New Zealand." Chinese Journal of Engineering 2016 (March 3, 2016): 1–10. http://dx.doi.org/10.1155/2016/1317489.

Full text
Abstract:
The 3-dimensional (3D) channel model gives a better understanding of statistical characteristics for practical channels than the 2-dimensional (2D) channel model, by taking the elevation domain into consideration. As different organizations and researchers have agreed to a standard 3D channel model, we attempt to measure the 3D channel and determine the parameters of the standard model. In this paper, we present the statistical propagation results of the 3D multiple-input and multiple-output (MIMO) channel measurement campaign performed in China and New Zealand (NZ). The measurements are done for an outdoor-to-indoor (O2I) urban scenario. The dense indoor terminals at different floors in a building form a typical 3D propagation environment. The key parameters of the channel are estimated from the measured channel impulse response (CIR) using the spatial-alternating generalized expectation-maximization (SAGE) algorithm. Till now there is abundant research performed on the azimuth domain; this paper mainly considers the statistical characteristics of the elevation domain. A statistical analysis of 3D MIMO channel results for both China and NZ measurements is presented for the following parameters: power delay profile (PDP), root mean square (rms), delay spread (DS), elevation angle-of-arrival (EAoA) distribution, elevation angle-of-departure (EAoD) distribution, elevation angular spread (AS), and cross-polarization discrimination (XPD).
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Wei, Thomas Jost, and Armin Dammann. "Outdoor to indoor channel characteristics on two different floors." European Transactions on Telecommunications 21, no. 5 (June 8, 2010): 426–34. http://dx.doi.org/10.1002/ett.1424.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Outdoor channel"

1

Noronha, Joseph Ajay Neil. "Ultrawideband Channel Sounding Studies in Outdoor and Outdoor-Indoor Environments." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10006.

Full text
Abstract:
Ultrawideband (UWB) is one of the most promising communication technologies in recent times with the promise of high data rates and spectral reuse. This work analyses the outdoor and outdoor-to-indoor propagating characteristics of the UWB pulse, which can be of the order of a few gigahertz in bandwidth. The aim of the thesis is to provide the parameters needed in order to develop a channel model for such cases. The channel model would then play an important role in determining physical layer (PHY) solutions to optimally exploit these characteristics. The measurements carried out on the Virginia Tech campus are used to compute parameters such as path loss, penetration loss and delay statistics. These are carried out in multiple frequency bands and the results are compared across frequency bands to determine effect of different frequency levels on the parameters. Finally the results are analyzed with respect to similar parameters obtained in other measurement campaigns in an attempt to evaluate the performance of Ultrawideband vis-à-vis narrowband systems.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
2

Smithson, Allan Geoffrey. "Wide area radio channel modelling across the indoor/outdoor interface." Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423492.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ahmed, Md Humayun. "Delay-line-multiplexer-based distributed antenna channel sounders for indoor and outdoor microcellular environments." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58673.

Full text
Abstract:
Distributed Antenna Systems (DAS) are increasingly used to implement wireless access networks that provide high capacity, high reliability, and tailored coverage in both indoor and outdoor microcell environments. The third-generation DAS that have recently emerged are based on massively distributed antennas connected by fibre to transceiver hubs linked via a high-speed backplane. Such systems can be: 1) configured to operate in a variety of operating modes from small cells to Distributed MIMO and 2) highly customized based upon the nature of the environments and the performance demands of the users. Successful deployment of future Distributed Antenna Systems will require channel characterizations that capture our knowledge and understanding of the propagation impairments that degrade the airlink performance in a form useful in simulation and design. The principal challenge of DAS channel measurements is the need to characterize the signals presented by a multiplicity of distributed antennas in an effective and efficient manner. Most DAS channel sounders that have been reported in the literature to date are either based upon a multi-channel measurement receiver or a single-channel receiver equipped with a multi-throw RF switch. Each carries significant penalties in terms of cost and/or performance. Here, we present an alternative scheme that uses relatively inexpensive fibre-optic excess delay lines inserted into a conventional DAS distribution hub in order to effectively stack or multiplex signals in time so they can be presented in sequence by a conventional channel sounder equipped with a single-channel receiver. The concept is generally applicable, with appropriate modification, to channel sounders based upon: 1) Vector Network Analyzers that are commonly used to characterize short-range indoor environments, and 2) stepping or sliding correlators that are commonly used to characterize small cells in outdoor environments. In each case, we have derived system design formulas that allow one to determine the excess delay required to provide adequate temporal separation between the individual channel responses and system error models that allow cross-talk and other effects that may be present in the fiber distribution hub to be characterized. Finally, we have demonstrated proof-of-concept implementations of both in laboratory, real-world indoor, and outdoor small cell environments.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
APA, Harvard, Vancouver, ISO, and other styles
4

Picorone, Antonio Angelo Missiaggia. "Comunicação digital em canais PLC: técnicas de transmissão, detecção e caracterização de canais PLC outdoor brasileiros." Universidade Federal de Juiz de Fora (UFJF), 2014. https://repositorio.ufjf.br/jspui/handle/ufjf/4168.

Full text
Abstract:
Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-25T12:36:15Z No. of bitstreams: 1 antonioangelomissiaggiapicorone.pdf: 6590019 bytes, checksum: 115ef6e90742599945ac5e9c8c44cb2c (MD5)
Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-25T15:26:22Z (GMT) No. of bitstreams: 1 antonioangelomissiaggiapicorone.pdf: 6590019 bytes, checksum: 115ef6e90742599945ac5e9c8c44cb2c (MD5)
Made available in DSpace on 2017-04-25T15:26:22Z (GMT). No. of bitstreams: 1 antonioangelomissiaggiapicorone.pdf: 6590019 bytes, checksum: 115ef6e90742599945ac5e9c8c44cb2c (MD5) Previous issue date: 2014-08-22
Esta tese discute a medição e a caracterização das redes de distribuição de energia elétrica de baixa tensão (RDE-BT) e externa (outdoor) como meio de comunicação de dados para sistemas power line communication (PLC). São apresentados e discutidos diversos parâmetros obtidos a partir de uma campanha de medição realizada na RDE-BT de uma concessionária brasileira. Dentre os parâmetros analisados destacam-se o tempo de coerência, banda de coerência, espalhamento do atraso, comprimento da resposta ao impulso do canal e capacidade do canal, quando se considera as bandas de frequências de 1,7 a 30 MHz, 1,7 a 50 MHz e 1,7 a 100 MHz. As análises estatísticas evidenciam o potencial da rede de energia elétrica como meio de comunicação e discute os limites dessa potencialidade. Além disso, são propostos modelos de densidade espectral de potência dos ruídos, caracterização esparsa de canais PLC e proposto um modelo para geração de canais PLC variantes no tempo, cujo tempo de coerência entre as realizações dos canais é controlado. A estimação de canais PLC é apresentada como uma oportunidade de aplicação das técnicas de amostragem compressiva. Os resultados relacionados com as modelagens propostas constituem um ferramental de grande utilidade para projetar e analisar o desempenho de sistemas PLC.
This dissertation aims at discussing the measurement and characterization of outdoor electric power grid of low voltage as communication medium (power line communication - PLC). Statistical analyses carried out on several parameters such as average channel gain, coherence time, coherence bandwidth, delay spread, length of the channel impulse response, and channel capacity, when it is considered the frequency bands from 1.7 to 30 MHz, from 1.7 up to 50 MHz, and from 1.7 up to 100 MHz, are presented. These analyses reveal the circumstances in which outdoor and low-voltage electric power grids can be advantageous to support a reliable and efficient PLC system operation. Moreover, power spectral density models of additive noise and sparse representation of PLC channels are proposed. Also, a PLC time-varying channels model generator that makes use of coherence time is introduced. The proposed model generator, which is validated with measured PLC channels, is an effective tool to carry out performance analysis of PLC systems. Finally, PLC channel estimation is highlighted as an opportunity for the application of compressive sampling-based techniques. The use of traditional OFDM - based channel estimation techniques and the ones based on compressive sensing gives some directions for advancing channel estimation techniques for PLC channels.
APA, Harvard, Vancouver, ISO, and other styles
5

Manan, Waqas. "Propagation channel models for 5G mobile networks. Simulation and measurements of 5G propagation channel models for indoor and outdoor environments covering both LOS and NLOS Scenarios." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17219.

Full text
Abstract:
At present, the current 4G systems provide a universal platform for broadband mobile services; however, mobile traffic is still growing at an unprecedented rate and the need for more sophisticated broadband services is pushing the limits on current standards to provide even tighter integration between wireless technologies and higher speeds. This has led to the need for a new generation of mobile communications: the so-called 5G. Although 5G systems are not expected to penetrate the market until 2020, the evolution towards 5G is widely accepted to be the logical convergence of internet services with existing mobile networking standards leading to the commonly used term “mobile internet” over heterogeneous networks, with several Gbits/s data rate and very high connectivity speeds. Therefore, to support highly increasing traffic capacity and high data rates, the next generation mobile network (5G) should extend the range of frequency spectrum for mobile communication that is yet to be identified by the ITU-R. The mm-wave spectrum is the key enabling feature of the next-generation cellular system, for which the propagation channel models need to be predicted to enhance the design guidance and the practicality of the whole design transceiver system. The present work addresses the main concepts of the propagation channel behaviour using ray tracing software package for simulation and then results were tested and compared against practical analysis in a real-time environment. The characteristics of Indoor-Indoor (LOS and NLOS), and indoor-outdoor (NLOS) propagations channels are intensively investigated at four different frequencies; 5.8 GHz, 26GHz, 28GHz and 60GHz for vertical polarized directional, omnidirectional and isotropic antennas patterns. The computed data achieved from the 3-D Shooting and Bouncing Ray (SBR) Wireless Insite based on the effect of frequency dependent electrical properties of building materials. Ray tracing technique has been utilized to predict multipath propagation characteristics in mm-wave bands at different propagation environments. Finally, the received signal power and delay spread were computed for outdoor-outdoor complex propagation channel model at 26 GHz, 28 GHz and 60GHz frequencies and results were compared to the theoretical models.
APA, Harvard, Vancouver, ISO, and other styles
6

Weiler, Richard Jürgen [Verfasser], Slawomir [Akademischer Betreuer] Stanczak, Slawomir [Gutachter] Stanczak, Alexander [Gutachter] Maltsev, and Makoto [Gutachter] Ando. "Channel investigation of outdoor millimeter-wave access links / Richard Jürgen Weiler ; Gutachter: Slawomir Stanczak, Alexander Maltsev, Makoto Ando ; Betreuer: Slawomir Stanczak." Berlin : Technische Universität Berlin, 2016. http://d-nb.info/1156184878/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Magnusson, Jonas, Johan Olsson, and Benjamin Risom. "Cooperation in the distribution channel : Determinants of inter-organisational cooperation between suppliers and servicing dealers in the Swedish outdoor power equipment market." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Företagsekonomi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-16033.

Full text
Abstract:
Background: For manufacturing suppliers, careful handling of business relationships with dealers is an essential function required for business success. End consumers rely on dealers for product information, advice and after sales support; all of which being factors capable of enhancing their perceived value of the product. The importance of the dealers for the end consumers implies that it is in the interest of suppliers to manage their relationship with the dealers in a satisfactory manner in order of gaining their support and commitment. In the case of suppliers in the Swedish market for outdoor power equipment, managing this relationship with servicing dealers is of great importance to their business success and viability. Successful management of such relationships requires coordination and cooperation. Thus, it is in the interest of suppliers to understand how long-term cooperation with dealers can be enhanced. Purpose: Our research focuses on identifying determinants that enhance sustainable cooperation between manufacturers and servicing dealers in the Swedish outdoor power equipment market. Method: A survey was conducted among servicing dealerships in Sweden testing eight hypotheses developed through an adaption of Morgan and Hunts’ (1994) Commitment-trust theory together with an extensive literature review. The results were ana-lysed and tested with correlation analysis. Conclusions: Trust and commitment were found to be determinants in fostering sustainable cooperation between dealers and manufacturers in the Swedish market for outdoor power equipment. Furthermore, four important antecedents for dealer commitment were identified; supplier commitment, support, termination costs and participation. Whereas, communication was found to be an important precursor for trust.
APA, Harvard, Vancouver, ISO, and other styles
8

Roivainen, A. (Antti). "Three-dimensional geometry-based radio channel model:parametrization and validation at 10 GHz." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526215549.

Full text
Abstract:
Abstract This dissertation presents complete parameterizations for a three-dimensional (3-D) geometry-based stochastic radio channel model (GSCM) at 10 GHz based on measurement campaigns. The thesis is divided into the following main parts: radio channel measurements, the characterization of model parameters, and model validation. Experimental multiple-input multiple-output (MIMO) channel measurements carried out in two-story lobby and urban small cell scenarios are first described. The measurements were performed with a vector network analyzer and dual polarized virtual antenna arrays with a bandwidth over 500 MHz. The measurement data was post-processed using the ESPRIT algorithm and the post-processed data was verified using a semi-deterministic map-based model. The results showed a good match between estimated and modeled multipath components (MPCs). In addition, single-input single-output outdoor-to-indoor measurements were executed through a standard multi-pane glass window and concrete wall. A statistical analysis was carried out for defining full 3-D characterization of the propagation channel in both line-of-sight (LOS) and non-line-of-sight (NLOS) propagation conditions. The delay and angular dispersions of MPCs are smaller in comparison to lower frequency bands due to the higher attenuation of the delayed MPCs. Moreover, specular reflection is observed to be the more dominant propagation mechanism in comparison to diffuse scattering, leading to smaller cluster angle spreads in comparison to lower frequency bands. The penetration loss caused by a standard multi-pane glass window is on the same level as in the lower frequency bands, whereas the loss caused by the concrete wall is a few dBs higher than at lower frequency bands. Finally, the GSCM with determined parameters is validated. A MIMO channel was reconstructed by embedding 3-D radiation patterns of the antennas into the propagation path estimates. Equivalently the channel simulations were performed with a quasi deterministic radio channel generator (QuaDRiGa) using the defined parameters. The channel capacity, Demmel condition number, and relative condition numbers are used as the comparison metrics between reconstructed and modeled channels. The results show that the reconstructed MIMO channel matches the simulated MIMO channel well
Tiivistelmä Tämä väitöskirja esittää parametroinnit kolmiulotteiselle geometriaan perustuvalle stokastiselle radiokanavamallille 10 GHz:n taajuusalueella perustuen mitattuun radiokanavaan. Väitöskirja koostuu kolmesta pääalueesta: radiokanavamittaukset, radiokanavamallin parametrien määrittäminen ja mallin validointi. Aluksi kuvataan kaksikerroksisessa aula ja kaupunkipiensolu ympäristöissä monilähetin monivastaanotin (MIMO) järjestelmällä tehdyt kanavamittaukset. Mittaukset tehtiin vektoripiirianalysaattorilla ja kaksoispolaroiduilla virtuaaliantenniryhmillä 500 MHz kaistanleveydellä. Mittausdata jälkikäsiteltiin käyttämällä ESPRIT-algoritmia ja jälkikäsitelty data varmennettiin osittain deterministisellä mittausympäristön karttaan pohjautuvalla radiokanavamallilla. Tulokset osoittivat hyvän yhteensopivuuden mitattujen ja mallinnettujen moniteiden välillä. Lisäksi toteuttiin yksi-lähetin yksi-vastaanotin mittaukset ulko-sisä etenemisympäristössä monikerroksisen lasin ja betoniseinän läpi. Tilastollinen analyysin avulla määritettiin täysi kolmiulotteinen kuvaus radioaallon etenemiskanavasta näköyhteys ja näköyhteydettömässä tilanteissa. Moniteiden suuremmista vaimennuksista johtuen viive ja kulmahajonnat ovat pienemmät verrattaessa matalempiin taajuuksiin. Peiliheijastus on diffuusisirontaa merkittävämpi radioaallon etenemismekanismi johtaen pienempiin klustereiden kulmahajeisiin matalempiin taajuuksiin verrattuna. Monikerroksisen lasin läpäisyvaimennus on samankaltainen kuin alemmilla taajuuksilla, kun sitä vastoin betoniseinän vaimennus on muutaman desibelin suurempi kuin alemmilla taajuuksilla. Lopulta geometriaan perustava stokastinen radiokanavamalli validoidaan määritellyillä parametreilla. MIMO kanava uudelleen rakennetaan lisäämällä kolmiulotteiset antennien säteilykuviot estimoituihin radioaallon etenemisteihin. Vastaavasti radiokanava simuloidaan näennäisesti deterministisellä radiokanavageneraattorilla (QuaDRiGa) käyttäen määriteltyjä mallin parametreja. Kanavakapasiteettia, Demmel ehtolukua ja suhteellista ehtolukua käytetään vertailumittareina uudelleen rakennetun ja simuloidun kanavan välillä. Tulosten perusteella uudelleen rakennettu MIMO kanava on yhteensopiva simuloidun radiokanavan kanssa
APA, Harvard, Vancouver, ISO, and other styles
9

Ferreira, Ana Luiza Siqueira. "Análise de técnicas de detecção de sinais UWB em ambientes PLC." Universidade Federal de Juiz de Fora (UFJF), 2011. https://repositorio.ufjf.br/jspui/handle/ufjf/4104.

Full text
Abstract:
Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-20T12:33:06Z No. of bitstreams: 1 analuizasiqueiraferreira.pdf: 2299159 bytes, checksum: 4a5563c4c2ee9592b3902e4440a2031b (MD5)
Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-20T12:45:20Z (GMT) No. of bitstreams: 1 analuizasiqueiraferreira.pdf: 2299159 bytes, checksum: 4a5563c4c2ee9592b3902e4440a2031b (MD5)
Made available in DSpace on 2017-04-20T12:45:20Z (GMT). No. of bitstreams: 1 analuizasiqueiraferreira.pdf: 2299159 bytes, checksum: 4a5563c4c2ee9592b3902e4440a2031b (MD5) Previous issue date: 2011-04-11
O uso de banda ultra-larga (ultra wideband - UWB) vem sendo tema de pesquisa na área da comunicação sem fio há cerca de 20 anos e os bons resultados obtidos tem levado à introdução de novas tecnologias no mercado de transmissão de dados a curtas distâncias. No entanto, o uso de UWB para a transmissão de dados através da rede elétrica (power line communications - PLC) ainda é uma questão de investigação em aberto, interessante e promissora para um conjunto específico de aplicações que demandam elevada taxa de transmissão em curtas distâncias e baixo custo, tais como impressoras, monitores, etc. Neste contexto, a presente dissertação analisa diferentes aspectos da transmissão UWB através de cabos de distribuição de energia elétrica. Um sistema UWB impulsivo é analisado quando i) o canal PLC é outdoor, linear e variante no tempo; ii) o canal PLC é indoor, linear e invariante no tempo; iii) há ruído AWGN (additive white Gaussian noise) e iv) há ruído AIGN (additive impulsive Gaussian noise). Além disso, são respondidas questões referentes à adequação do pulso UWB ao canal de comunicação, considerando o espectro do mesmo quando o canal PLC é outdoor ou indoor. As modulações UWB investigadas são pela posição do pulso (pulse position modulation - PPM) e pela amplitude do pulso (pulse amplitude modulation - PAM). Além de apresentar diretrizes para o projeto de um sistema UWB para aplicações PLC, a presente dissertação analisa diversas estratégias e técnicas para recepção e redução da complexidade computacional do receptor UWB. Os resultados indicam que o uso de UWB é interessante para algumas aplicações específicas que envolvam elevada taxa de transmissão, através de curtas distâncias e baixo custo.
Ultra wideband modulation (UWB) has been a subject of research in the wireless field for nearly 20 years and the good results achieved have led to the introduction of new technologies in the market of short distances data communication. However, the employment of UWB for data transmission over power lines (PLC) is still an open, interesting and promising research theme for a specific set of applications which require high throughput over short distances and low cost, such as printers, computer monitors, etc. In this context, this dissertation examines several aspects of the UWB transmission through electricity distribution cables. An UWB impulsive system is analyzed when i) the PLC channel is outdoor, linear and time invariant; ii) the PLC channel is indoor, linear and time invariant; iii) there is AWGN (additive white gaussian noise) and iv) there is AIGN (additive impulsive gaussian noise) noise. Moreover, many questions regarding the adequacy of UWB pulse for the communication channel are answered, taking into account its spectrum when the PLC channel is outdoor or indoor. The UWB modulations investigated are pulse position modulation (PPM) and pulse amplitude modulation (PAM). Apart from presenting some guidelines to project a UWB system, this work analyzes different strategies and techniques for reception that reduce the computational complexity of the UWB receiver. The results point out that UWB is interesting for some specific applications which require high data transmission rate in short distances and low cost.
APA, Harvard, Vancouver, ISO, and other styles
10

Sundaram, Preethi. "New Results For Characterization Of Indoor Channels In Two Ism Bands (900-928 Mhz And 2.4-2.5 Ghz)." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1140462634.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Outdoor channel"

1

San Francisco (Calif.). Office of the Controller. City Services Auditor Division. Review of CPA's audits of Clear Channel Airports: Reporting period : April 1, 2001, through March 31, 2005 : reported revenues, $14,071,808. San Francisco CA: Office of the Controller, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

The issue of potential impacts of global warming on recreation and the recreation industry: Hearing before the Committee on Environment and Public Works, United States Senate, One Hundred Tenth Congress, first session, May 24, 2007. Washington: U.S. G.P.O., 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Glick, Patricia. The Chesapeake Bay and global warming: A paradise lost for hunters, anglers, and outdoor enthusiasts? Reston, VA: National Wildlife Federation, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Glick, Patricia. The Chesapeake Bay and global warming: A paradise lost for hunters, anglers, and outdoor enthusiasts? Reston, VA: National Wildlife Federation, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Glick, Patricia. The Chesapeake Bay and global warming: A paradise lost for hunters, anglers, and outdoor enthusiasts? Reston, VA: National Wildlife Federation, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Staple, Tamara. Climate change and recreation in Nahanni National Park Reserve. Ottawa, Ont: Environment Canada, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Lanza, Michael. Before they're gone: A family's year-long quest to explore America's most endangered national parks. Boston: Beacon Press, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Davis, Margaret R. A practical guide to organization design. Menlo Park, Calif: Crisp Publications, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Go: Accompanying the Channel 4 series 'The great outdoors'. [London]: Channel 4 with the Sports Council, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Jim Gilberts Minnesota Nature Notes Exploring The Changes In Our Backyards Fields Lakes And Woods Week By Week Season By Season. Nodin Press, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Outdoor channel"

1

Glazunov, Andrés Alayón, Zhihua Lai, and Jie Zhang. "Outdoor-Indoor Channel." In LTE-Advanced and Next Generation Wireless Networks, 123–51. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118410998.ch5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sheeba Kumari, M., Sudarshan A. Rao, and Navin Kumar. "Outdoor Millimeter-Wave Channel Modeling for Uniform Coverage Without Beam Steering." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 233–44. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-73423-1_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sahoo, Swetaleena, Sarita Nanda, and Harish Kumar Sahoo. "MIMO-OFDM Outdoor Channel Estimation Using Sparse Momentum Fractional Adaptive Filter." In Lecture Notes in Electrical Engineering, 549–57. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4866-0_67.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Raspopoulos, Marios, and Stavros Stavrou. "Capacity Assessment in Distributed MIMO in Outdoor Environments Using Deterministic Channel Modeling." In Mobile Multimedia Communications, 288–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35155-6_24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gomes, Ruan D., Emerson B. Gomes, Iguatemi E. Fonseca, Marcelo S. Alencar, and Cesar Benavente-Peces. "Multi-channel Communication Analysis of Industrial Wireless Sensor Networks in Outdoor Environments." In Communications in Computer and Information Science, 176–95. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30110-1_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Davila-Andrade, Henry L., and Jorge L. Arizaca-Cusicuna. "Measurements and Outdoor Propagation Channel Characterization for Rumiwasi Archaeological Site at 920 MHz." In Proceedings of the 6th Brazilian Technology Symposium (BTSym’20), 949–56. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75680-2_103.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Karadimas, Petros. "Outdoor Channels." In LTE-Advanced and Next Generation Wireless Networks, 97–122. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781118410998.ch4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Garg, Nitin, and Anwar Ahmad. "Performance of an Outdoor Optical Wireless Communication Channel Through Gamma-Gamma Turbulence at Different Frequency." In Lecture Notes in Mechanical Engineering, 551–60. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5463-6_49.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cleary, Allan C., and Michael Paterakis. "Design and Evaluation of an RRA Scheme for Voice-Data Channel Access in Outdoor Microcellular Wireless Environments." In The Kluwer International Series in Engineering and Computer Science, 117–30. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1409-7_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sarnin, Suzi Seroja, and Siti Maisurah Sulong. "Performance of BER Channel Estimation and Tracking Based on DD-NLMS for Indoor and Outdoor Environment in MIMO OFDM." In Lecture Notes in Electrical Engineering, 345–53. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24584-3_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Outdoor channel"

1

Johnston, Scott E., and Paul D. Fiore. "Close-range outdoor wireless channel sounding." In 2011 45th Asilomar Conference on Signals, Systems and Computers. IEEE, 2011. http://dx.doi.org/10.1109/acssc.2011.6190358.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Yi, Liang, Tian Jin-jun, Hong Tao, and Wang Zhen-rong. "Research on 2-Channel Outdoor Instrumentation Radar." In 2006 CIE International Conference on Radar. IEEE, 2006. http://dx.doi.org/10.1109/icr.2006.343251.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kang, Min Young, Jung Yong Lee, and Seong-Cheol Kim. "Analysis of Channel Characteristics for Outdoor 28 GHz Millimeter Wave Channel." In 2019 25th Asia-Pacific Conference on Communications (APCC). IEEE, 2019. http://dx.doi.org/10.1109/apcc47188.2019.9026495.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Marovic, Luka, Irena Jankovic, Mladen Koprivica, and Aleksandar Neskovic. "Markov multipath radio channel model in outdoor environment." In 2011 19th Telecommunications Forum Telfor (TELFOR). IEEE, 2011. http://dx.doi.org/10.1109/telfor.2011.6143595.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Fernandez, O., M. Domingo, and R. P. Torres. "Outdoor to Indoor 2x2 Wideband MIMO Channel Modelling." In 2009 IEEE 69th Vehicular Technology Conference Spring. IEEE, 2009. http://dx.doi.org/10.1109/vetecs.2009.5073761.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Antonescu, Bogdan, Miead Tehrani Moayyed, and Stefano Basagni. "Outdoor mmWave Channel Propagation Models using Clustering Algorithms." In 2020 International Conference on Computing, Networking and Communications (ICNC). IEEE, 2020. http://dx.doi.org/10.1109/icnc47757.2020.9049734.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Weiler, Richard J., Michael Peter, Wilhelm Keusgen, Andreas Kortke, and Mike Wisotzki. "Millimeter-wave channel sounding of outdoor ground reflections." In 2015 IEEE Radio and Wireless Symposium (RWS). IEEE, 2015. http://dx.doi.org/10.1109/rws.2015.7129712.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Bidigare, Patrick, D. Richard Brown, Shawn Kraut, and Upamanyu Madhow. "MIMO channel prediction results on outdoor collected data." In 2013 Asilomar Conference on Signals, Systems and Computers. IEEE, 2013. http://dx.doi.org/10.1109/acssc.2013.6810348.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

M, Sheeba Kumari, Sudarshan A. Rao, and Navin Kumar. "Deterministic Modeling for mmWave Outdoor Street Canyon Channel." In 2019 PhD Colloquium on Ethically Driven Innovation and Technology for Society (PhD EDITS). IEEE, 2019. http://dx.doi.org/10.1109/phdedits47523.2019.8986945.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Elsts, Atis, Hjalmar Wennerström, and Christian Rohner. "IEEE 802.15.4 Channel Diversity in an Outdoor Environment." In SenSys '15: The 13th ACM Conference on Embedded Network Sensor Systems. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2820990.2821001.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Outdoor channel"

1

Dahl, Kristina, and Rachel Licker. Too Hot to Work: Assessing the Threats Climate Change Poses to Outdoor Workers. Union of Concerned Scientists, August 2021. http://dx.doi.org/10.47923/2021.14236.

Full text
Abstract:
Outdoor workers face severe risks from extreme heat—risks that will increasingly threaten the health and livelihood of tens of millions of outdoor workers in the United States as climate change makes dangerously hot days more frequent and intense. With economic and legal systems that routinely discount their lives and safety, workers who experience heat-related injuries or illnesses on the job have little to no recourse. By midcentury, with no action to reduce global warming emissions, an estimated $37.1 billion in outdoor workers’ earnings would be at risk annually due to extreme heat. Even with bold action to limit emissions, outdoor workers will face severe and rising risks from extreme heat. Policymakers and employers must take actions to protect outdoor workers.
APA, Harvard, Vancouver, ISO, and other styles
2

In, Ye-Jin, HyunJu Shin, Hyun-Jin Seo, Hyun-Jung Lee, and Kyu-Hye Lee. Changes in the Outdoor Wear Market: Focused on the South Korean Market. Ames: Iowa State University, Digital Repository, November 2016. http://dx.doi.org/10.31274/itaa_proceedings-180814-1456.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sesar, Robert. Investigation of attitudinal and behavioral changes of selected sixth grade students who attend an outdoor school. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.533.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Outdoor channel' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography