Title:
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Improved scheduling decisions for LTE-A uplink based on MPR information
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Author:
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Lema, Maria A.; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. WiComTec - Grup de recerca en Tecnologies i Comunicacions Sense Fils |
Abstract:
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Advanced (LTE-A) allows
for non-contiguous resource allocation in the uplink. The aim is
to increase the spectral efficiency by exploiting users’ frequency
diversity gain. This feature implies that clustered-DFT-S-OFDM
must be used in the uplink, no longer preserving the single carrier
property of previous releases. Multi-cluster transmission brings
an increase in the signal’s Peak-to-Average Power Ratio (PAPR)
and so power de-rating must be introduced to control out-of-band
emissions. Maximum power Reduction (MPR) can counteract
the frequency gain and bring losses to the users’ performance.
This paper proposes a novel scheduler that considers the MPR
information. The packet scheduler’s main task is to evaluate the
gain or loss in throughput of the multi-cluster transmission over
a conventional contiguous one. Based on the Sounding Reference
Signals (SRSs) channel estimation, the eNB can predict the multi-
cluster transmission’s performance. Results show that enabling
the MPR information in the scheduler adapts the transmission
mode to each particular case, enhancing the system throughput |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils -Long-Term Evolution (Telecommunications) -Mobile communication systems -Comunicacions mòbils, Sistemes de -Telecomunicació |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Conference Object |
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