Base station over-the-air testing in reverberation chamber

2017 ◽  
Author(s):  
Christian Patane Lotback ◽  
Klas Arvidsson ◽  
Mats Hogberg ◽  
Mattias Gustafsson
Keyword(s):  
Base Station ◽  
Reverberation Chamber

Power Boosting and Compensation During OTA Testing of a Real 4G LTE Base Station in Reverberation Chamber

2015 ◽  
Vol 57 (4) ◽  
pp. 623-634 ◽  
Author(s):  
Davide Micheli ◽  
Massimo Barazzetta ◽  
Franco Moglie ◽  
Valter Mariani Primiani
Keyword(s):  
Base Station ◽  
Reverberation Chamber ◽  
4G Lte

MIMO 4 × 4 vs. MIMO 2 × 2 performance assessment of a real life LTE base station in a reverberation chamber

2020 ◽  
pp. 153500
Author(s):  
Davide Micheli ◽  
Massimo Barazzetta ◽  
Luca Bastianelli ◽  
Riccardo Diamanti ◽  
Camillo Carlini ◽  
...  
Keyword(s):  
Performance Assessment ◽  
Real Life ◽  
Base Station ◽  
Reverberation Chamber

scholarly journals Correlation and Capacity Calculations with Reference Antennas in an Isotropic Environment

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Thorkild B. Hansen
Keyword(s):  
Plane Wave ◽  
Plane Waves ◽  
Sampling Rate ◽  
Base Station ◽  
Mimo Channel ◽  
Reverberation Chamber ◽  
Capacity Curves ◽  
Standard Base ◽  
Chamber Model ◽  
Antenna Correlation

A reverberation chamber is a convenient tool for over-the-air testing of MIMO devices in isotropic environments. Isotropy is typically achieved in the chamber through the use of a mode stirrer and a turntable on which the device under test (DUT) rides. The quality of the isotropic environment depends on the number of plane waves produced by the chamber and on their spatial distribution. This paper investigates how the required sampling rate for the DUT pattern is related to the plane-wave density threshold in the isotropic environment required to accurately compute antenna correlations. Once the plane-wave density is above the threshold, the antenna correlation obtained through isotropic experiments agrees with the antenna correlation obtained from the classical definition, as has been proven theoretically. This fact is verified for the good, nominal, and bad reference antennas produced by CTIA. MIMO channel capacity simulations are performed with a standard base station model and the DUT placed in a single-tap plane-wave reverberation chamber model. The capacity curves obtained with the good, nominal, and bad reference antennas are clearly distinguishable.

A Comparison Between Different Reception Diversity Schemes of a 4G-LTE Base Station in Reverberation Chamber: A Deployment in a Live Cellular Network

2017 ◽  
Vol 59 (6) ◽  
pp. 2029-2037 ◽  
Author(s):  
Massimo Barazzetta ◽  
Davide Micheli ◽  
Luca Bastianelli ◽  
Riccardo Diamanti ◽  
Matteo Totta ◽  
...  
Keyword(s):  
Cellular Network ◽  
Base Station ◽  
Reverberation Chamber ◽  
4G Lte

Testing of the Carrier Aggregation Mode for a Live LTE Base Station in Reverberation Chamber

2017 ◽  
Vol 66 (4) ◽  
pp. 3024-3033 ◽  
Author(s):  
Davide Micheli ◽  
Massimo Barazzetta ◽  
Camillo Carlini ◽  
Riccardo Diamanti ◽  
Valter Mariani Primiani ◽  
...  
Keyword(s):  
Base Station ◽  
Carrier Aggregation ◽  
Reverberation Chamber

A Survey on Hierarchical Cluster Based Secure Routing Protocols and Key Management Schemes in Wireless Sensor Networks

2018 ◽  
pp. 18-26
Author(s):  
Yugashree Bhadane ◽  
Pooja Kadam
Keyword(s):  
Routing Protocol ◽  
Routing Protocols ◽  
Key Management ◽  
Energy Efficient ◽  
Base Station ◽  
Secure Routing ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Management Schemes ◽  
Cluster Based Routing

Now days, wireless technology is one of the center of attention for users and researchers. Wireless network is a network having large number of sensor nodes and hence called as “Wireless Sensor Network (WSN)”. WSN monitors and senses the environment of targeted area. The sensor nodes in WSN transmit data to the base station depending on the application. These sensor nodes communicate with each other and routing is selected on the basis of routing protocols which are application specific. Based on network structure, routing protocols in WSN can be divided into two categories: flat routing, hierarchical or cluster based routing, location based routing. Out of these, hierarchical or cluster based routing is becoming an active branch of routing technology in WSN. To allow base station to receive unaltered or original data, routing protocol should be energy-efficient and secure. To fulfill this, Hierarchical or Cluster base routing protocol for WSN is the most energy-efficient among other routing protocols. Hence, in this paper, we present a survey on different hierarchical clustered routing techniques for WSN. We also present the key management schemes to provide security in WSN. Further we study and compare secure hierarchical routing protocols based on various criteria.

Research on Characteristics of Field Uniformity in Reverberation Chamber Using Two TX Antennas

2012 ◽  
Vol E95.B (7) ◽  
pp. 2386-2392
Author(s):  
Jung-Hoon KIM ◽  
Tae-Heon JANG ◽  
Sung-Kuk LIM ◽  
Songjun LEE ◽  
Sung-Il YANG
Keyword(s):  
Reverberation Chamber ◽  
Field Uniformity
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