Joint user grouping and frequency allocation for multiuser SC-FDMA transmission

Ruder, Michael A.; Ding, Daiyong; Dang, Uyen Ly; Vasilakos, Athanasios V.; Gerstacker, Wolfgang H.

doi:10.1016/j.phycom.2013.02.004

Cited by 17 publications

(28 citation statements)

References 25 publications

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“…the same number of users compared to multi-cell system with L=4, where the large scale fading β = 1 for all users, denoted as 'Conventional fixed 2-user grouping [9]'. The fourth one is the problem with fixed 2-user grouping in conventional large cell solved by Hungarian algorithm in [18], denoted as algorithm 'Conventional fixed 2-user grouping [18]'. The fifth one is the algorithm with fixed 1-user grouping and multi-cell cooperation, denoted as 'No user grouping with multi-cell cooperation'.…”

Section: B Simulation Resultsmentioning

confidence: 99%

“…2) The Impact of User Grouping for Multi-cell Systems: To compare the proposed algorithm with fixed user grouping algorithms and other conventional joint user pairing and resource allocation algorithms, we simulate fixed 1-, 2-, 3-user grouping algorithms and the modified algorithms proposed in [9] and [18] by using AM techniques respectively, that is, replace the Shannon capacity with AM rate of Eq. (11).…”

Section: B Simulation Resultsmentioning

confidence: 99%

“…Most of these research works are performed with linear MIMO detection such as zero forcing (ZF)/MMSE or the expansion of successive interference cancellation (SIC) in virtual MIMO systems. In [18], M. A. Ruder et al propose strategies using BER as a grouping optimization criterion, where the BER is evaluated after MMSE linear multiuser equalization.…”

Section: Introductionmentioning

confidence: 99%

“…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].…”

Section: Introductionmentioning

confidence: 99%

“…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. Since the same number of resources is allocated to each user pair, it is not optimum for system throughput.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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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Section: B Simulation Resultsmentioning

confidence: 99%

Section: B Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%