Title:
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MPR-aware scheduler for carrier aggregation transmissions in LTE uplink
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Author:
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Lema Rosas, María Ángel; García Lozano, Mario; Ruiz Boqué, Sílvia
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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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La publicació final està disponible a Springer a través de http: //dx.doi. org /10.1007/s11277-015-2695-5 |
Abstract:
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Unlike previous Long Term Evolution (LTE) releases, LTE - Advanced
(LTE-A) allows the use of non-contiguous resource allocation in the uplink (UL).
This feature leads to increase the spectral efficiency thanks to link performance gains
obtained from frequency diversity. At the same time, non-contiguous allocations
bring higher peak to average power ratio (PAPR) and so potentially higher intermodulation
distortion and adjacent channel leakage-power ratio (ACLR). Power derating
has been proposed as a means to avoid this problem and thus user equipments
(UEs) must reduce their maximum transmitted power. However, the additional link
loss on power limited UEs partially counteracts the gain brought by multi-cluster allocation.
In this sense, this paper proposes to include Maximum Power Reduction
(MPR) information in opportunistic scheduling decisions. The new scheduling proposal
is able to determine whether multi-clustering leads to a net gain in instantaneous
throughput or if localized allocation is preferred. The proposed method is compared
to other scheduling techniques and it is also analyzed in different inter-site distance
scenarios. Results show that considering MPR in opportunistic decisions can lead to
overall cell performance improvements. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació -Long-Term Evolution (Telecommunications) -LTE-A -CA -UL Scheduler -Cell-edge -MPR -Power Control non-contiguous RA -Long-term evolution (Telecomunicacions) |
Rights:
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Document type:
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Article - Submitted version Article |
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