Search Results - "Ekman, Reijo"

Measurements to Study the Coexistence of Private LTE TDD Networks in 2.3 GHz Band by Ekman, Reijo, Talmola, Pekka, Kalliovaara, Juha, Hallio, Juhani, Hyvarinen, Petri, Lakner, Tibor, Jokela, Tero, Paavola, Jarkko, Himmanen, Heidi

“…Private wireless networks have recently gained interest in many business applications. Use of 4G and 5G technologies for private network deployments has become…”
Get full text

Electromagnetic irradiation exposure and its bioindication–An overview by Hänninen, Osmo, Huttunen, Paavo, Ekman, Reijo

“…Man made electromagnetic irradiation and fields cover now the globe due to the recent extensive propagation of mobile telephony.The increased load affects…”
Get full text

Spectrum Occupancy Measurements in the 2.3-2.4 GHz band: Guidelines for Licensed Shared Access in Finland by Höyhtyä, Marko, Matinmikko, Marja, Chen, Xianfu, Hallio, Juhani, Auranen, Jani, Ekman, Reijo, Röning, Juha, Engelberg, Jan, Kalliovaara, Juha, Taher, Tanim, Riaz, Ali, Roberson, Dennis

“…This paper presents results from spectrum occupancy measurements in the 2.3-2.4 GHz band at Turku, Finland. The band is currently under study in European…”
Get full text

Spectrum Occupancy Measurements: A Survey and Use of Interference Maps by Hoyhtya, Marko, Mammela, Aarne, Eskola, Marina, Matinmikko, Marja, Kalliovaara, Juha, Ojaniemi, Jaakko, Suutala, Jaakko, Ekman, Reijo, Bacchus, Roger, Roberson, Dennis

“…In order to provide meaningful data about spectrum use, occupancy measurements describing the utilization rate of a specific frequency band should be conducted…”
Get full text

Distributed Spectrum Sensing Using Low Cost Hardware by Grönroos, Stefan, Nybom, Kristian, Björkqvist, Jerker, Hallio, Juhani, Auranen, Jani, Ekman, Reijo

“…A distributed spectrum sensing network is prototyped using off the shelf hardware consisting of Raspberry Pi mini-computers and DVB-T receivers with software…”
Get full text

Rapidly Deployable Network System for Critical Communications in Remote Locations by Hallio, Juhani, Savunen, Tapio, Rantanen, Heikki, Ekman, Reijo, Kalliovaara, Juha, Lakner, Tibor, Auranen, Jani, Arajarvi, Antti, Jokela, Tero, Paavola, Jarkko, Kokkinen, Heikki

“…This paper presents a transportable and rapidly deployable network system, which can be used to provide local voice, video and data connectivity for critical…”
Get full text

Trials of 60 GHz Radio for a Future 5G New Radio (NR) Solution for High Capacity CCTV Offload and Multimedia Transfer by Ekman, Reijo, Vare, Jani, Jokela, Tero, Auranen, Jani, Hallio, Juhani, Kalliovaara, Juha, Talmola, Pekka, Paavola, Jarkko, Ritakallio, Ilkka

“…This paper studies the radio interface performance of a 60 GHz radio in both indoor and outdoor conditions. The target is to assess its suitability for…”
Get full text

700 MHz Band LTE Uplink Interference to DTT Reception System Cabling by Kalliovaara, Juha, Ekman, Reijo, Jokela, Tero, Arajarvi, Antti, Gylen, Henry, Paavola, Jarkko

“…This paper studies the shielded screening attenuation of consumer-grade digital terrestrial television (DTT) antenna coaxial cables and presents a measurement…”
Get full text

Shared Spectrum Access between PMSE Cameras and Private LTE Networks in the 2.3 GHz Band by Ekman, Reijo, Kalliovaara, Juha, Talmola, Pekka, Himmanen, Heidi, Lerkki, Tapani, Hyvarinen, Petri, Jokela, Tero, Paavola, Jarkko, Alcaraz, Pedro Alfonso Perez-Chuecos

“…This paper presents measurement campaigns to study shared spectrum access between wireless PMSE cameras and LTE networks in 2.3 GHz band. In Finland, the…”
Get full text

Suitability of ITU-R P.1546 propagation predictions for allocating LTE SDL with GE06 by Kalliovaara, Juha, Ekman, Reijo, Jokela, Tero, Jakobsson, Mikko, Talmola, Pekka, Paavola, Jarkko, Huuhka, Esko, Jokisalo, Matti, Merilainen, Mikko

“…The compatibility of Geneva 2006 frequency plan (GE06) assignments and allocations for digital terrestrial television (DTT) is determined using ITU-R P.1546…”
Get full text

Some Initial Results and Observations from a Series of Trials within the Ofcom TV White Spaces Pilot by Holland, Oliver, Shuyu Ping, Sastry, Nishanth, Chawdhry, Pravir, Chareau, Jean-Marc, Bishop, James, Hong Xing, Taskafa, Suleyman, Aijaz, Adnan, Bavaro, Michele, Viaud, Philippe, Pinato, Tiziano, Anguili, Emanuele, Reza Akhavan, Mohammad, McCann, Julie, Yue Gao, Zhijin Qin, Qianyun Zhang, Knopp, Raymond, Kaltenberger, Florian, Nussbaum, Dominique, Dionisio, Rogerio, Ribeiro, Jose, Marques, Paulo, Hallio, Juhani, Jakobsson, Mikko, Auranen, Jani, Ekman, Reijo, Kokkinen, Heikki, Paavola, Jarkko, Kivinen, Arto, Solc, Tomaz, Mohorcic, Mihael, Ha-Nguyen Tran, Ishizu, Kentaro, Matsumura, Takeshi, Ibuka, Kazuo, Harada, Hiroshi, Mizutani, Keiichi

“…TV White Spaces (TVWS) technology allows wireless devices to opportunistically use locally-available TV channels enabled by a geolocation database. The UK…”
Get full text

Field trial of the 3.5 GHz citizens broadband radio service governed by a spectrum access system (SAS) by Palola, Marko, Höyhtyä, Marko, Aho, Pekka, Mustonen, Miia, Kippola, Tero, Heikkilä, Marjo, Yrjölä, Seppo, Hartikainen, Vesa, Tudose, Lucia, Kivinen, Arto, Ekman, Reijo, Hallio, Juhani, Paavola, Jarkko, Mäkeläinen, Marko, Hänninen, Tuomo

“…In this paper, we describe a spectrum access system (SAS) based Citizens Broadband Radio Service (CBRS) field trial using a live LTE network in the 3.5 GHz…”
Get full text

Experimental Investigations on MIMO Radio Channel Characteristics on UHF Band by Parviainen, R., Ylitalo, J., Nuutinen, J.-P., Talmola, P., Henriksson, J., Himmanen, H., Ekman, R., Huuhka, E.

“…Pan-European project B21C (broadcasting for the 21st century) aims to develop technology for DVB-T2 (digital video broadcasting, terrestrial), which is a…”
Get full text

Interference measurements for Licensed Shared Access (LSA) between LTE and wireless cameras in 2.3 GHz band by Kalliovaara, Juha, Jokela, Tero, Ekman, Reijo, Hallio, Juhani, Jakobsson, Mikko, Kippola, Tero, Matinmikko, Marja

“…This paper presents interference measurements for spectrum sharing between Long-Term Evolution (LTE) network and wireless cameras in the 2.3-2.4 GHz band under…”
Get full text

Global spectrum observatory network setup and initial findings by Taher, Tanim, Attard, Ryan, Riaz, Ali, Roberson, Dennis, Taylor, Jesse, Zdunek, Kenneth, Hallio, Juhani, Ekman, Reijo, Paavola, Jarkko, Suutala, Jaakko, Roning, Juha, Matinmikko, Marja, Hoyhtya, Marko, MacKenzie, Allen

“…This paper describes the current efforts underway to set up matched long-term continuously running spectrum observatories in the US (in Chicago and Blacksburg)…”
Get full text

A high-performance tiered storage system for a global spectrum observatory network by Attard, Ryan, Kalliovaara, Juha, Taher, Tanim, Taylor, Jesse, Paavola, Jarkko, Ekman, Reijo, Roberson, Dennis

“…This paper describes the RF measurement storage and database architecture for long-term continuously running spectrum observatories in the US (at Chicago and…”
Get full text

A series of trials in the UK as part of the Ofcom TV white spaces pilot by Holland, Oliver, Sastry, Nishanth, Ping, Shuyu, Chawdhry, Pravir, Chareau, Jean-Marc, Bishop, James, Bavaro, Michele, Anguili, Emanuele, Knopp, Raymond, Kaltenberger, Florian, Nussbaum, Dominique, Yue Gao, Hallio, Juhani, Jakobsson, Mikko, Auranen, Jani, Ekman, Reijo, Paavola, Jarkko, Kivinen, Arto, Dionisio, Rogerio, Marques, Paulo, Ha-Nguyen Tran, Ishizu, Kentaro, Harada, Hiroshi, Kokkinen, Heikki, Luukkonen, Olli

“…TV White Spaces technology is a means of allowing wireless devices to opportunistically use locally-available TV channels (TV White Spaces), enabled by a…”
Get full text

Detecting the impact of human mega-events on spectrum usage by Abdallah, Abdallah, MacKenzie, Allen B., Marojevic, Vuk, Kalliovaara, Juha, Bacchus, Roger, Riaz, Ali, Roberson, Dennis, Juhani, Hallio, Ekman, Reijo

“…Dynamic spectrum access (DSA) has emerged as an enabling technology to allow more intensive sharing of the radio spectrum. A requirement for most proposed DSA…”
Get full text

Measurements and analysis of spectrum occupancy in the 2.3-2.4 GHz band in Finland and Chicago by Hoyhtya, Marko, Matinmikko, Marja, Xianfu Chen, Hallio, Juhani, Auranen, Jani, Ekman, Reijo, Roning, Juha, Engelberg, Jan, Kalliovaara, Juha, Taher, Tanim, Riaz, Ali, Roberson, Dennis

“…This paper presents results from spectrum occupancy measurements in the 2.3-2.4 GHz band at Turku, Finland and Chicago, USA. The band is currently under study…”
Get full text

Field measurements of WSD-DTT protection ratios over outdoor and indoor reference geometries by Talmola, P., Kalliovaara, J., Paavola, J., Ekman, R., Vainisto, A., Aurala, N., Kokkinen, H., Heiska, K., Wichman, R., Poikonen, J.

“…A currently prevalent view of the operation of white space cognitive radios is that they should use geolocation databases to determine their frequency band and…”
Get full text