Sub-6 GHz mMIMO Base Stations Meet 5G's Size and Weight Challenges

By steering RF energy to users and away from interference, SINR, throughput and overall system capacity improve. mMIMO CHALLENGES With 5G antenna array and mMIMO technology coming to fruition, wireless network operators will face deployment challenges as they make the transition from 4G LTE tc 5G ba...

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Bibliographic Details
Published inMicrowave Journal Vol. 62; no. 2; pp. 40 - 52
Main Author Honcharenko, Walter
Format Trade Publication Article
LanguageEnglish
Published Dedham Horizon House Publications, Inc 01.02.2019
EditionInternational ed.
Subjects
Algorithms
Antenna arrays
Antennas
Circuits
Communication
Control theory
Design
Designers
Efficiency
Energy conservation
Feedback loops
Frequencies
Microwaves
Millimeter waves
Noise
Noise control
Plug & play
Radio frequency
Radios
Signal processing
Stations
Steering
Telecommunications towers
Thermal management
Traffic signs
Transceivers
Weight
Wireless networks
Online AccessGet full text
ISSN0192-6225

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Summary:By steering RF energy to users and away from interference, SINR, throughput and overall system capacity improve. mMIMO CHALLENGES With 5G antenna array and mMIMO technology coming to fruition, wireless network operators will face deployment challenges as they make the transition from 4G LTE tc 5G base stations, an incremental evolution that will see both technologies comingled for what is likely to be an extended period. On the path to realizing commercial-scale mmWave 5G connectivity, site acquisition will become infinitely more difficult, given the 100 m spacing between base stations that frequency and physics require for uniform coverage. mmWave base station equipment installed on lamp posts, street signs, bus stop shelters and other structures will need to be far lighter and less obtrusive than anything that has come before. With drain efficiencies approaching 60 percent and optimized integration of the Tx and Rx components, as well as DPD feedback paths, using FEMs in mMIMO radios and TRx boards has many benefits: * Reuse portions of the transceiver board layout. * Optimize device-to-heat sink thermal management. * Optimize power levels, feedback loops, VSWR and control circuitry. * Manage isolation and noise within the FEM. * Enable dynamic power saving modes. * Improve final yields compared to discrete designs, since the integrated FEM is fully tested. Using the FEM design approach, redesigning a mMIMO radio for a different number of antenna elements, frequency band or power level is simplified, as FEMs are "plug and play" modules, with standardized interfaces, control logic and RF levels part of the design methodology.
ISSN:0192-6225