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On the Impacts of In-Band LTE Emissions

Published

Author(s)

Azizollah Kord

Abstract

Abstract—With the introduction of low-power internet of things (IoT) and device to device (D2D) communications in the long time evolution (LTE) system protocol, the in-band interference from other user equipment (UE) with higher power requires special attention. These higher power devices (e.g., smartphones) may cause in-band interference against the lower power devices. To examine this possibility, we examine the inband spectra of an LTE UE with four different resource block configurations. The results show that as the number of allocated resource blocks decrease, the amount of ripple or "mirroring" increases within the channel's frequency band. This mirrored signal may raise the noise floor as observed by lower power devices. In turn, these devices may have to radiate more power to overcome this extra noise. Future work includes a study on the effects of this type of interference on: power, latency of victim UE as well as how the impact varies with network traffic (e.g., voice, real-time streaming, etc.).
Proceedings Title
2017 URSI the national Academics of Sciences-Engineering-Medicine
Conference Dates
January 4-7, 2018
Conference Location
Boulder, CO, US

Keywords

In-Band LTE, Emission, Interference, LTE Uplink, In-Band Image

Citation

Kord, A. (2018), On the Impacts of In-Band LTE Emissions, 2017 URSI the national Academics of Sciences-Engineering-Medicine, Boulder, CO, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=924587 (Accessed June 23, 2024)

Issues

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Created January 3, 2018, Updated April 12, 2022