Optimal resource allocation in uplink SC-FDMA systems

Wong, Ian; Oteri, O.; Mccoy, W.

doi:10.1109/twc.2009.061038

Cited by 194 publications

(164 citation statements)

References 8 publications

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“…Various studies [16][17][18][19][20] have addressed the exclusivity and adjacency constraints for proportionally fair (PF) scheduling-based resource allocation. However, all previous works consider only CUEs and do not consider D2D communications.…”

Section: Contributionmentioning

confidence: 99%

“…However, all previous works consider only CUEs and do not consider D2D communications. Hence, PF schedulers used in [16][17][18][19][20] are only for single-tier network where only CUEs exist. In order to apply the resource allocation to both CUEs and DUEs using uplink resources, our previous work has considered SC-FDMA-based resource allocation scheme for D2D communications [21].…”

Section: Contributionmentioning

confidence: 99%

“…A set of algorithms have been proposed to solve the adjacency constraint in SC-FDMA and to find the near-to-optimal scheme which best emulates the time domain PF criteria. Wong et al in [17] have proposed an optimal algorithm to assign contiguous resources to CUEs in SC-FDMA-based system. The study mainly addresses the adjacency constraint in SC-FDMA.…”

Section: Resource Allocationmentioning

confidence: 99%

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SC-FDMA-based resource allocation and power control scheme for D2D communication using LTE-A uplink resource

Shah

Hasan

et al. 2015

J Wireless Com Network

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Device-to-device (D2D) communication-enabled cellular networks allow cellular devices to directly communicate with each other without any evolved NodeB (eNB). D2D communication aims to improve the spectral efficiency and increases the overall system capacity. For future mobile networks, intelligent radio resource allocation and power control schemes are required to accommodate the increasing number of cellular devices and their growing demand of data traffic. In this paper, a combined resource allocation and power control scheme for D2D communication is proposed. In the proposed scheme, D2D communication reuses the uplink (UL) resources of conventional cellular user equipments (CUEs); therefore, we have adopted single-carrier frequency division multiple access (SC-FDMA) as UL transmission scheme. The proposed scheme uses fractional frequency reuse (FFR)-based architecture to efficiently allocate the resources and mitigate the interference between CUEs and D2D user equipments (DUEs). In order to guarantee the user fairness, the proposed scheme uses the well-known proportional fair (PF) scheduling algorithm for resource allocation. We have also proposed an intelligent power control scheme which provides equal opportunity to both CUEs and DUEs to achieve a certain minimum signal-to-interference and noise ratio (SINR) value. The performance evaluation results show that the proposed scheme significantly improves the overall cell capacity and achieves low peak-to-average power ratio (PAPR).

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Section: Contributionmentioning

confidence: 99%

Section: Contributionmentioning

confidence: 99%

Section: Resource Allocationmentioning

confidence: 99%

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SC-FDMA-based resource allocation and power control scheme for D2D communication using LTE-A uplink resource

Shah

Hasan

et al. 2015

J Wireless Com Network

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“…In order to obtain both the multiuser diversity gain and frequency selective gain, joint resource allocation algorithms with user grouping for SC-FDMA uplink virtual MIMO systems are proposed in [9], [18]. Different from sub-channel allocation for orthogonal frequency division multiplexing access (OFDMA), users can only be assigned to multiple sub-channels that are adjacent to each other in SC-FDMA system [20], [21]. In [18], a low complexity solution combining Hungarian algorithm [22], [23] with binary switching algorithm is proposed for the optimization of joint frequency allocation and user pairing.…”

Section: Introductionmentioning

confidence: 99%

Dynamic User Grouping and Joint Resource Allocation With Multi-Cell Cooperation for Uplink Virtual MIMO Systems

et al. 2017

IEEE Trans. Wireless Commun.

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Abstract-This paper proposes a novel joint resource allocation algorithm combining dynamic user grouping, multi-cell cooperation and resource block (RB) allocation for single carrierfrequency division multiple access (SC-FDMA) uplink in multicell virtual MIMO systems. We first develop the dynamic multicell user grouping criteria using minimum mean square error (MMSE) equalization and adaptive modulation (AM) with bit error rate (BER) constraint. Then, we formulate and solve a new throughput maximization problem whose resource allocation includes cell selection, dynamic user grouping and RB pattern assignment. Furthermore, to reduce the computational complexity significantly, especially in the case of large numbers of users and RBs, we present an efficient iterative Hungarian algorithm based on user and resource partitions (IHA URP) to solve the problem by decomposing the large scale problem into a series of small scale sub-problems, which can obtain close-to-optimal solution with much lower complexity. The simulation results show that our proposed joint resource allocation algorithm with dynamic multicell user grouping scheme achieves better system throughput with BER guarantee than fixed user grouping algorithm and other proposed schemes in the literature.

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“…Heuristic algorithms for SC-FDMA scheduling and channel allocation and their performance evaluation are presented in [11]- [14], [16]. Besides maximizing the sum utility, other performance measures have been considered [15], [17].…”

Section: Introductionmentioning

confidence: 99%

A Unified Graph Labeling Algorithm for Consecutive-Block Channel Allocation in SC-FDMA

Lei

Yuan

et al. 2013

IEEE Trans. Wireless Commun.

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Abstract-Optimal channel allocation is a key performance engineering aspect in single-carrier frequency-division multiple access (SC-FDMA). In SC-FDMA with localized channel assignment, the channels of each user must form a consecutive block. Subject to this constraint, various performance objectives, such as maximum utility, minimum power, and minimum number of channels, have been studied. We present a unified graph labeling algorithm for these problems, based on the structural insight that SC-FDMA channel allocation can be modeled as finding an optimal path in an acyclic graph. By this insight, our algorithm applies the concept of labeling and label domination that represent non-trivial extensions of finding a shortest or longest path. The key parameter in trading performance versus computation is the number of labels kept per node. Increasing the number ultimately enables global optimality. The algorithm's approach is further justified by its global optimality guarantee with strong polynomial-time complexity for two specific scenarios, where the input is user-invariant and channel-invariant, respectively. For the general case, we provide numerical results demonstrating the algorithm's ability of attaining near-optimal solutions.

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Optimal resource allocation in uplink SC-FDMA systems

Cited by 194 publications

References 8 publications

SC-FDMA-based resource allocation and power control scheme for D2D communication using LTE-A uplink resource

SC-FDMA-based resource allocation and power control scheme for D2D communication using LTE-A uplink resource

Dynamic User Grouping and Joint Resource Allocation With Multi-Cell Cooperation for Uplink Virtual MIMO Systems

A Unified Graph Labeling Algorithm for Consecutive-Block Channel Allocation in SC-FDMA

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