Title:
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Introduction of MPR information for enhanced multi-cluster scheduling in LTE-A uplink
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Author:
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Lema Rosas, María Ángel; García Lozano, Mario; Ruiz Boqué, Sílvia; González González, David
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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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Against previous Long Term Evolution (LTE) re-leases, LTE-Advanced (LTE-A) allows the use of non-contiguous resource allocation in the uplink (UL). This feature leads to an increase in spectral efficiency thanks to link performance gains obtained from frequency diversity. At the same time noncontiguous allocations bring higher peak to average power ratio (PAPR) and so potentially higher inter-modulation and adjacent channel leakage-power ratio (ACLR). Power de-rating 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. Results show that this method improves cell throughput and allows making a smarter use of clustered transmission. |
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) -Wireless sensor networks -Long Term Evolution -Diversity reception -Resource allocation -Scheduling -Wireless sensor networks -Long-term evolution (Telecomunicacions) -Xarxes de sensors sense fils |
Rights:
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Document type:
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Article - Published version Conference Object |
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