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Primal Decomposition-Based Method for Weighted Sum-Rate Maximization in Downlink OFDMA Systems
2010
EURASIP Journal on Wireless Communications and Networking
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We consider the weighted sum-rate maximization problem in downlink Orthogonal Frequency Division Multiple Access (OFDMA) systems. ...
Motivated by the increasing popularity of OFDMA in future wireless technologies, a low complexity suboptimal resource allocation algorithm is obtained for joint optimization of multiuser subcarrier assignment ...
Acknowledgment This research was supported by the Finnish Funding Agency for Technology and Innovation (Tekes), Academy of Finland, Nokia, Nokia Siemens Networks, Elektrobit, Graduate School in Electronics ...
doi:10.1155/2010/324780
fatcat:6wcqjzgmojhi5dhym5jxngd4ma
Optimal Resource Allocation for OFDMA Downlink Systems
2006
2006 IEEE International Symposium on Information Theory
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This paper proposes efficient rate and power allocation algorithms for OFDMA downlink systems where each tone is taken by at most one user. ...
Weighted sum rate maximization (WSRmax) and weighted sum power minimization (WSPmin) problems are considered. ...
CONCLUSION In OFDMA downlink systems, efficient algorithms are developed for weighted sum rate maximization and weighted sum power minimization problems. ...
doi:10.1109/isit.2006.262075
dblp:conf/isit/SeongMC06
fatcat:es2qfedunrcvhir2lytdpcat7m
Flexible Proportional-Rate Scheduling for OFDMA System
2013
IEEE Transactions on Mobile Computing
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In this paper, we study the sum-rate maximization algorithms for downlink and uplink orthogonal frequency division multiple access (OFDMA) systems under proportional-rate constraint (PRC) and minimum-rate ...
Both offline and online optimization algorithms are developed to optimize the SNR weight vector to maximize the sum rate while satisfying several constraints, such as PRC. ...
The sum-rate maximization under the transmit power and quality-of-service (QoS) constraints has been a research focus for OFDMA systems. ...
doi:10.1109/tmc.2012.155
fatcat:hfeq4ihqgrbthfda44whbd3baa
SCMA for downlink multiple access of 5G wireless networks
2014
2014 IEEE Global Communications Conference
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2014 pre-print arXiv:1404.5605v1 fatcat:rqqbab4lebagfoj7alee53pwyq
In this paper a technique is developed to enable multi-user SCMA (MU-SCMA) for downlink wireless access. ...
User pairing, power sharing, rate adjustment, and scheduling algorithms are designed to improve the downlink throughput of a heavily loaded network. ...
The weighted sum-rate at point B is described as . (24) Assuming , the weighted sum-rate at B is maximized only if . ...
doi:10.1109/glocom.2014.7037423
dblp:conf/globecom/NikopourYBAHBM14
fatcat:zu2f3m4z7rba7fuecp3qhbvtxe
A Joint Subcarrier Assignment and Power Allocation with Statistical Delay QoS Provisioning in Full-Duplex OFDMA Systems
2018
ITM Web of Conferences
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However, for full-duplex OFDMA systems, how to maximize effective capacity while satisfying the given QoS requirement is an open problem. ...
The authors in [8] focused on a full-duplex multi-user OFDMA cellular system, and they proposed a subcarrier allocation, power allocation and uplink and downlink user-pairing scheme to maximize the system ...
The resource allocation algorithms in full-duplex OFDMA systems have been studied to maximize the sum-rate by assigning subcarriers and allocating transmission power under a limited power budget. ...
doi:10.1051/itmconf/20181701009
fatcat:22kwohe74zagnpx3jrpdaokg3m
Nonconcave utility maximization in the OFDMA downlink
2008
2008 6th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks and Workshops
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The problem of utility maximization in an OFDMA downlink is considered. Based on measurements of a scalable video codec, concave and nonconcave utility functions are proposed. ...
Both methods yield the optimum solution for concave utilities. ...
efficient solutions for maximizing the weighted-sum rate in the OFDMA downlink. ...
doi:10.1109/wiopt.2008.4586100
dblp:conf/wiopt/BrehmerU08
fatcat:6t7venkuyvamrnxmjyiuyeabze
Resource Allocation for Downlink OFDMA Relay Networks with Imperfect CSI
2012
2012 IEEE Vehicular Technology Conference (VTC Fall)
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We propose a new resource allocation scheme for a downlink orthogonal frequency division multiple access (OFDMA) relay network with imperfect channel state information (CSI). ...
In the proposed scheme, resources are allocated to the channels between a base station, relays, and users such that the weighted sum of goodput is maximized under power constraints of the base station ...
Power and Subcarrier Allocation Suppose that the rates of the users are fixed. Then, maximizing the weighted sum of goodput is equivalent to maximizing the weighted sum of capacity. ...
doi:10.1109/vtcfall.2012.6399255
dblp:conf/vtc/LeeSL12
fatcat:xhwkv3ab2ngqpgxxhylkzi3vye
Resource allocation algorithm for symmetrical services in OFDMA systems
2020
Indonesian Journal of Electrical Engineering and Computer Science
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In this paper, we propose an algorithm for resource allocation in MIMO-OFDMA system for applications that demand similar quality in uplink and downlink direction. ...
The problem is formulated as multiobjective optimization problem with objectives to maximize the bidirectional data rates for individual users and to minimize the difference between the uplink and downlink ...
In this work, NSGA II is utilized to allocate the subcarriers and weighted sum method for power allocation in a MIMO OFDMA system for symmetrical services. ...
doi:10.11591/ijeecs.v18.i2.pp867-874
fatcat:r2kqzpo4pndq3djzg4sgm7aoii
Resource allocation in OFDMA networks with half-duplex and imperfect full-duplex users
2016
2016 IEEE International Conference on Communications (ICC)
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In this paper, we consider maximizing the weighted sum-rate of downlink and uplink of a single cell OFDMA network which consists of an imperfect FD base-station (BS) and a mixture of half-duplex and imperfect ...
The power allocation problem is convexified based on the difference of two concave functions approach, for which an iterative solution is obtained. ...
the following power allocation problem, denoted by P3, to maximize the weighted sum-rate in a single sub-channel and for a fixed pair of uplink and downlink users. ...
doi:10.1109/icc.2016.7510917
dblp:conf/icc/TehraniLZ16
fatcat:tizx3btctzdstkaxytgxixdiee
Optimal Downlink OFDMA Subcarrier, Rate, and Power Allocation with Linear Complexity to Maximize Ergodic Weighted-Sum Rates
2007
IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference
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In this paper, we propose a resource allocation algorithm for ergodic weighted-sum rate maximization in downlink OFDMA systems. ...
power allocation algorithm that has complexity O(M K) for an M -user, K-subcarrier OFDMA system. ...
ERGODIC RATE MAXIMIZATION IN OFDMA
A. ...
doi:10.1109/glocom.2007.324
dblp:conf/globecom/WongE07
fatcat:5dtj3jinwrbubggac6c46kaa7m
Rate-maximization scheduling schemes for uplink OFDMA
2009
IEEE Transactions on Wireless Communications
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In this paper, we propose and study several sum rate maximization algorithms for uplink orthogonal frequency division multiple access (OFDMA). ...
For uplink scheduling without fairness consideration, we propose two Lagrangian duality optimization-based methods to maximize the weighted sum rate, which include a cyclic dual-update algorithm and a ...
We first propose the duality optimization schemes for weighted sum rate maximization. ...
doi:10.1109/twc.2009.080866
fatcat:wt3sb2jh4rbdhblgwekjajnxne
Resource Allocation -WiMAX Systems
2010
Modern Applied Science
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In this paper, we consider resource allocation strategies for downlink multiuser mobileWiMAX systems. We address the problem of subchannel assignment and power allocation. ...
Resource allocation is been shown to provide substantial performance gain in wireless systems, such as WiMAX, when full channel state information (CSI) is available. ...
weighted-sum rate. ...
doi:10.5539/mas.v4n12p140
fatcat:kjrhnz7nffd6ravdrdfs3562oq
Impact of finite rate feedback on the performance of chunk-based multiuser OFDM systems
2013
2013 8th International Conference on Communications and Networking in China (CHINACOM)
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This paper investigates the Weighted Sum Rate Maximization (WSRmax) problem with power constraint in multiuser OFDM systems. ...
By comparing the performance of the three schemes, we find out the impact of finite rate feedback on the performance of chunk-based multiuser OFDM systems. ...
As a summary, [5] studied several channel quality reporting strategies for OFDMA systems that maximized the sum rate which was constrained by the feedback overhead. ...
doi:10.1109/chinacom.2013.6694573
fatcat:tfjvcxz7ozbybjfo37k5txqhim
Channel-Adaptive Optimal OFDMA Scheduling
2007
2007 41st Annual Conference on Information Sciences and Systems
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Joint subcarrier, power and rate allocation in orthogonal frequency division multiple access (OFDMA) scheduling is investigated for both downlink and uplink wireless transmissions. ...
Therefore, the derived optimal subcarrier and power capacity region by traversing the boundary of C, these weights illocation for the weighted average sum-rate maximization in can affect user fairness ...
Figure 1 shows the capacity regions of the OFDMA downlink and uplink channels for sum-power budget P 1 Watt and individual power budgets P1 = P2 = 0.5 Watt. ...
doi:10.1109/ciss.2007.4298365
dblp:conf/ciss/WangGY07
fatcat:mkuas3acnrecpdmd3e7zfpu6hq
Exploiting Interference Alignment in Multi-Cell Cooperative OFDMA Resource Allocation
[article]
2011
arXiv
pre-print
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In this paper, the joint optimization of frequency-domain precoding via IA, subcarrier user selection and power allocation is investigated for a cooperative three-cell OFDMA system to maximize the downlink ...
It is shown that this hybrid resource allocation scheme flexibly exploits the downlink IA gains for OFDMA-based cellular systems. ...
With the objective of maximizing the system weighted sum-rate, the joint optimization of frequency-domain precoding via IA, SC scheduling with user selection, and power allocation is studied in this paper ...
arXiv:1103.3093v1
fatcat:xdd4earmzvbhfh2qn6z67crqdi
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