Evaluation of Radio Resource Management Impact on RoF Signal Transmission for Downlink LTE

Analog radio-over-fiber (RoF) is a suitable technology for efficiently developing the cloud-RAN concept in fifth generation deployments based on long-term evolution advanced (LTE-A). Distortion and radiofrequency (RF) power amplifier gain should be taken into account in order to achieve the desired...

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Bibliographic Details
Published in:Journal of lightwave technology 2018-05, Vol.36 (9), p.1591-1600
Main Authors: Carro, Pedro Luis, Hernandez-Solana, Angela, Valdovinos Bardaji, Antonio
Format: Article
Language:English
Subjects:
Amplification
Amplifiers
Bandwidth
Cloud RAN
Downlink
Dynamic range
Error analysis
error vector magnitude
Fiber optic networks
Gain
long term evolution
OFDM
Optical fiber communication
Radio frequency
radio over fiber
radio resource management
Receivers & amplifiers
Resource management
Signal transmission
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Summary:Analog radio-over-fiber (RoF) is a suitable technology for efficiently developing the cloud-RAN concept in fifth generation deployments based on long-term evolution advanced (LTE-A). Distortion and radiofrequency (RF) power amplifier gain should be taken into account in order to achieve the desired transmission power at the base station. Both mainly depend on several parameters that characterize the optical link, such as the RF input power and bias current. This paper analyzes the link performance due to variations on the traffic load as expected under real operation. In this paper, we show that it is possible in this scenario to adaptively choose the optimum RF input power to minimize the measured error vector magnitude and reduce the RF subsystem gain. Results show that this adaptation allows to relax the RF amplifier gain requirements up to 3-4 dB for medium load conditions.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2017.2784622