Proceedings ArticleDOI
Uplink Power Control, Interference Coordination and Resource Allocation for 3GPP E-UTRA
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TLDR
Simulation results show that interference mitigation is implemented through slow fractional power control and interference coordination through UE alignment and FDM resource allocation significantly improve uplink sector and cell edge user throughput performance.Abstract:
Evolved UTRA and UTRAN is being standardized in 3GPP standard group as a long term evolution of the 3GPP radio-access technology. The goal is to achieve 2-4 times the spectral efficiency and user throughput and much smaller latency compared to HSDPA/HSUPA. Single carrier FDMA (e.g. DFT-SOFDM) is the multiple access technique of choice for uplink transmission. Interference control is one of the key elements to achieve the target spectral efficiency and user cell- edge performance requirement, especially for uplink. In this paper, interference mitigation is implemented through slow fractional power control and interference coordination through UE alignment and FDM resource allocation. Simulation results show that these techniques significantly improve uplink sector and cell edge user throughput performance.read more
Citations
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Journal ArticleDOI
Analytical Modeling of Uplink Cellular Networks
TL;DR: It is shown that partial channel inversion should be used at low signal-to-interference-plus-noise ratio (SINR), while full power transmission is optimal at higher SINR, and the implications for power control are focused on.
Journal ArticleDOI
Non-orthogonal Multiple Access (NOMA) with Successive Interference Cancellation for Future Radio Access
Kenichi Higuchi,Anass Benjebbour +1 more
TL;DR: NOMA can be expected to efficiently exploit the near-far effect experienced in cellular environments and offer a better tradeoff between system efficiency and user fairness than orthogonal multiple access (OMA), which is widely used in 3.9 and 4G mobile communication systems.
Proceedings ArticleDOI
Performance of Uplink Fractional Power Control in UTRAN LTE
C.U. Castellanos,D.L. Villa,Claudio Rosa,Klaus I. Pedersen,Francesco Calabrese,Per Henrik Michaelsen,Juergen Michel +6 more
TL;DR: This paper evaluates in detail the impact of a FPC scheme on the SINR and interference distributions in order to provide a sub-optimal configuration tuned for both interference- and noise-limited scenarios.
Journal ArticleDOI
Joint Rate and SINR Coverage Analysis for Decoupled Uplink-Downlink Biased Cell Associations in HetNets
Sarabjot Singh,Sarabjot Singh,Sarabjot Singh,Xinchen Zhang,Xinchen Zhang,Xinchen Zhang,Jeffrey G. Andrews +6 more
TL;DR: An accurate and tractable model is proposed to characterize the uplink SINR and rate distribution in a multi-tier HCN as a function of the association rules and power control parameters and it is shown that the optimal degree of channel inversion increases with load imbalance in the network.
Journal ArticleDOI
Fractional power control for decentralized wireless networks
TL;DR: It is proved that using an exponent of s* = 1/2 minimizes the outage probability, meaning that the inverse square root of the channel strength is a sensible transmit power scaling for networks with a relatively low density of interferers.
References
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Proceedings ArticleDOI
Overview of UMTS Air-Interface Evolution
Brian K. Classon,Kevin L. Baum,Vijay Nangia,R. Love,Yakun Sun,R. Nory,K. Stewart,Arunabha Ghosh,Rapeepat Ratasuk,Weimin Xiao,Jun Tan +10 more
TL;DR: A preliminary look at the air interface for Evolved UTRA (E-UTRA) and associated key technologies required to reach its design objectives are provided.