Results 1 - 10 of 671

A low-signalling scheme for distributed resource allocation in multi-cellular OFDMA systems

by Pablo Soldati, Mikael Johansson
"... Abstract—This paper considers distributed protocol design for joint sub-carrier, transmission scheduling and power man-agement in uplink/downlink multi-cellular OFDMA wireless networks. The optimal solution to this problem is hard to achieve, both in theory and in practice. We propose a fully decent ..."
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Abstract—This paper considers distributed protocol design for joint sub-carrier, transmission scheduling and power man-agement in uplink/downlink multi-cellular OFDMA wireless networks. The optimal solution to this problem is hard to achieve, both in theory and in practice. We propose a fully

Channel Assignment Schemes for Cellular Mobile Telecommunication Systems

by I. Katzela, M. Naghshineh - IEEE Personal Communications , 1996
"... This paper provides a detailed discussion of wireless resource and channel allocation schemes. We provide a survey of a large number of published papers in the area of fixed, dynamic and hybrid allocation schemes and compare their trade-offs in terms of complexity and performance. We also investigat ..."
Abstract - Cited by 392 (1 self) - Add to MetaCart
This paper provides a detailed discussion of wireless resource and channel allocation schemes. We provide a survey of a large number of published papers in the area of fixed, dynamic and hybrid allocation schemes and compare their trade-offs in terms of complexity and performance. We also

The impact of imperfect scheduling on cross-layer congestion control in wireless networks

by Xiaojun Lin, Ness B. Shroff , 2005
"... In this paper, we study cross-layer design for congestion control in multihop wireless networks. In previous work, we have developed an optimal cross-layer congestion control scheme that jointly computes both the rate allocation and the stabilizing schedule that controls the resources at the under ..."
Abstract - Cited by 349 (32 self) - Add to MetaCart
In this paper, we study cross-layer design for congestion control in multihop wireless networks. In previous work, we have developed an optimal cross-layer congestion control scheme that jointly computes both the rate allocation and the stabilizing schedule that controls the resources

Distributed Resource Allocation for Downlink Multicell OFDMA Systems

by Seyed Mehdi, Hosseini Andargoli, Kamal Mohamed-pour
"... Abstract — This paper addresses resource allocation for sum throughput maximization in a sectorized two-cell downlink OFDMA systems impaired by multicell interference. It is well known that the optimization problem for this scenario is NPhard and combinational, which is here converted to a novel sum ..."
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Abstract — This paper addresses resource allocation for sum throughput maximization in a sectorized two-cell downlink OFDMA systems impaired by multicell interference. It is well known that the optimization problem for this scenario is NPhard and combinational, which is here converted to a novel

A Survey on Resource Allocation in OFDMA Wireless Networks

by Ph. D
"... OFDMA is the access scheme used in the third and fourth generation wireless cellular networks. Proper allocation of bandwidth and power is essential for ensuring the optimal performance and utilization of the resources in the OFDMA based cellular networks. The resource allocation in uplink direction ..."
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OFDMA is the access scheme used in the third and fourth generation wireless cellular networks. Proper allocation of bandwidth and power is essential for ensuring the optimal performance and utilization of the resources in the OFDMA based cellular networks. The resource allocation in uplink

A Resource Allocation Model for QoS Management

by Ragunathan Rajkumar, Chen Lee, John Lehoczky, Dan Siewiorek - In Proceedings of the IEEE Real-Time Systems Symposium , 1997
"... Quality of service (QoS) has been receiving wide attention in recent years in many research communities including networking, multimedia systems, real-time systems and distributed systems. In large distributed systems such as those used in defense systems, on-demand service and inter-networked syste ..."
Abstract - Cited by 188 (7 self) - Add to MetaCart
-networked systems, applications contending for system resources must satisfy timing, reliability and security constraints as well as application-specific quality requirements. Allocating sufficient resources to different applications in order to satisfy various requirements is a fundamental problem

Resource Allocation in Downlink MIMO-OFDMA with Proportional Fairness

by Bin Da, Chi Chung Ko - Journal of Communications , 2009
"... Multiple Access) downlink resource allocation is presented in this paper. It has an objective of maximizing the total system capacity while having constraints on the total available power and proportional fairness. Dominant eigenchannels obtained from MIMO state matrix are used to formulate this sch ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
of rate distribution with a linear complexity. As a result, it may be suitable for fulfilling diverse QoS requirements of MIMO-OFDMA systems. Index Terms—adaptive resource allocation, OFDMA, diverse QoS requirements SISO/MIMO-

Cooperative Relay Based Resource Allocation for OFDMA Network

by S. Tamilselvan, R. Gajalakshmi, D. Prabakar
"... Abstract — Cooperative relaying is a promising technique for Long Term Evolution Advanced (LTE-A) networks to satisfy high throughput demand and support heterogeneous communication services with diverse quality-of-service (QoS) requirements. Optimal relay selection, power allocation and sub carrier ..."
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assignment scheme under a total power constrain is proposed for a Qos aware resource allocation for multi user cooperative OFDMA network. The relay selection, power allocation and subcarrier assignment problem are formulated as a joint optimization problem with the objective of maximizing system throughput

Interference Aware Dynamic Subchannel Allocation in a Multi-cellular OFDMA System Based on Traffic Situation

by Banani Roy, Chanchal Kumer Roy, Michael Einhaus
"... Abstract. This paper presents the development and evaluation of a dynamic subchannel allocation scheme for downlink multi-cellular Or-thogonal Frequency Division Multiple Access (OFDMA) systems. In the considered system each Access Point (AP) and the associated Mobile Terminals (MTs) are not operati ..."
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Abstract. This paper presents the development and evaluation of a dynamic subchannel allocation scheme for downlink multi-cellular Or-thogonal Frequency Division Multiple Access (OFDMA) systems. In the considered system each Access Point (AP) and the associated Mobile Terminals (MTs

A tutorial on cross-layer optimization in wireless networks

by Xiaojun Lin, Ness B. Shroff, R. Srikant - IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS , 2006
"... This tutorial paper overviews recent developments in optimization based approaches for resource allocation problems in wireless systems. We begin by overviewing important results in the area of opportunistic (channel-aware) scheduling for cellular (single-hop) networks, where easily implementable my ..."
Abstract - Cited by 248 (29 self) - Add to MetaCart
myopic policies are shown to optimize system performance. We then describe key lessons learned and the main obstacles in extending the work to general resource allocation problems for multi-hop wireless networks. Towards this end, we show that a clean-slate optimization based approach to the multi
Results 1 - 10 of 671