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Resource Allocation in Uplink OFDMA Wireless Systems

2012-02-10 Technology & Engineering
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Release : 2012-02-10
Genre : Technology & Engineering
Kind : eBook
Book Rating : 647/5 ( reviews)

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Book Synopsis Resource Allocation in Uplink OFDMA Wireless Systems by : Elias Yaacoub

Download or read book Resource Allocation in Uplink OFDMA Wireless Systems written by Elias Yaacoub. This book was released on 2012-02-10. Available in PDF, EPUB and Kindle. Book excerpt: Tackling problems from the least complicated to the most, Resource Allocation in Uplink OFDMA Wireless Systems provides readers with a comprehensive look at resource allocation and scheduling techniques (for both single and multi-cell deployments) in uplink OFDMA wireless networks relying on convex optimization and game theory to thoroughly analyze performance. Inside, readers will find topics and discussions on: Formulating and solving the uplink ergodic sum-rate maximization problem Proposing suboptimal algorithms that achieve a close performance to the optimal case at a considerably reduced complexity and lead to fairness when the appropriate utility is used Investigating the performance and extensions of the proposed suboptimal algorithms in a distributed base station scenario Studying distributed resource allocation where users take part in the scheduling process, and considering scenarios with and without user collaboration Formulating the sum-rate maximization problem in a multi-cell scenario, and proposing efficient centralized and distributed algorithms for intercell interference mitigation Discussing the applicability of the proposed techniques to state-of-the-art wireless technologies, LTE and WiMAX, and proposing relevant extensions Along with schematics and figures featuring simulation results, Resource Allocation in Uplink OFDMA Wireless Systems is a valuable book for?wireless communications and cellular systems professionals and students.

Resource Allocation in Uplink OFDMA Wireless Systems

2012-03-13 Technology & Engineering
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Release : 2012-03-13
Genre : Technology & Engineering
Kind : eBook
Book Rating : 505/5 ( reviews)

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Book Synopsis Resource Allocation in Uplink OFDMA Wireless Systems by : Elias Yaacoub

Download or read book Resource Allocation in Uplink OFDMA Wireless Systems written by Elias Yaacoub. This book was released on 2012-03-13. Available in PDF, EPUB and Kindle. Book excerpt: Tackling problems from the least complicated to the most, Resource Allocation in Uplink OFDMA Wireless Systems provides readers with a comprehensive look at resource allocation and scheduling techniques (for both single and multi-cell deployments) in uplink OFDMA wireless networks relying on convex optimization and game theory to thoroughly analyze performance. Inside, readers will find topics and discussions on: Formulating and solving the uplink ergodic sum-rate maximization problem Proposing suboptimal algorithms that achieve a close performance to the optimal case at a considerably reduced complexity and lead to fairness when the appropriate utility is used Investigating the performance and extensions of the proposed suboptimal algorithms in a distributed base station scenario Studying distributed resource allocation where users take part in the scheduling process, and considering scenarios with and without user collaboration Formulating the sum-rate maximization problem in a multi-cell scenario, and proposing efficient centralized and distributed algorithms for intercell interference mitigation Discussing the applicability of the proposed techniques to state-of-the-art wireless technologies, LTE and WiMAX, and proposing relevant extensions Along with schematics and figures featuring simulation results, Resource Allocation in Uplink OFDMA Wireless Systems is a valuable book for?wireless communications and cellular systems professionals and students.

Resource Allocation for OFDMA Systems

2019-06-29 Technology & Engineering
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Release : 2019-06-29
Genre : Technology & Engineering
Kind : eBook
Book Rating : 926/5 ( reviews)

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Book Synopsis Resource Allocation for OFDMA Systems by : Chen Chen

Download or read book Resource Allocation for OFDMA Systems written by Chen Chen. This book was released on 2019-06-29. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the sources and historic collection campaigns of resource allocation in wireless communication systems. The unique characteristics of MIMO-OFDMA systems are thoroughly studied and summarized. Remarks on resource allocation and spectrum sharing are also presented, which demonstrate the great value of resource allocation techniques, but also introduce distinct challenges of resource allocation in MIMO-OFDMA systems. Novel resource allocation techniques for OFDMA Systems are surveyed from various applications (e.g., for unicast, or multicast with Guaranteed BER and Rate, subcarrier and power allocation with various detectors, low-complexity energyefficient resource allocation, etc.) in this book. Due to the high mobility and low latency requirements of 5G wireless communications, this book discusses how to deal with the imperfect CSI. It also discusses how to deal with e.g., throughput maximization, outage probabilities maximization and guarantee, energy efficiency, physical-layer security issues with feedback channel capacity constraints, in order to characterize and understand the applications of practical scenes. This book will target professionals & researchers working in the fields of Wireless Communications and Networking, Resource Allocation and Transmissions. Advanced-level students in electrical engineering and computer science will also find this book useful as a secondary textbook.

Efficient Resource Allocation in Uplink OFDMA Systems

2010
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Release : 2010
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Book Synopsis Efficient Resource Allocation in Uplink OFDMA Systems by : Elias Edward Yaacoub

Download or read book Efficient Resource Allocation in Uplink OFDMA Systems written by Elias Edward Yaacoub. This book was released on 2010. Available in PDF, EPUB and Kindle. Book excerpt: Orthogonal Frequency Division Multiple Access (OFDMA) has been selected as the accessing scheme for state-of-the-art next generation mobile communication systems. The high data rates expected for current and next generation broadband wireless access systems, such as 3GPP Long Term Evolution (LTE) and WiMAX (IEEE 802.16) necessitate an efficient use of the available resources. Downlink resource allocation in OFDMA systems has received a lot of attention, with relatively less work done on the uplink. The distributed nature of the power constraint in the uplink makes the uplink resource allocation problem more challenging than its downlink counterpart. In this dissertation, the ergodic weighted sum-rate maximization problem in the uplink of single cell OFDMA systems with continuous and discrete rates is formulated and solved. Novel low-complexity suboptimal scheduling algorithms are proposed and shown to perform closely to the optimal solution. These algorithms are generalized to include utility maximization in general, with a focus on proportional fairness. In addition, the results are extended to a distributed base station scenario, and distributed scheduling techniques with and without user cooperation are developed. Furthermore, the problem of uplink resource allocation in a multicell scenario is addressed. Several novel intercell interference mitigation techniques are proposed, in both the centralized and distributed scheduling cases, with and without base station collaboration. Finally, the applicability of the proposed resource allocation algorithms in state-of-the-art wireless systems like LTE and WiMAX is studied.

Optimized Uplink OFDMA Resource Allocation with Ergodic Rate Maximization

2009
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Release : 2009
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Book Synopsis Optimized Uplink OFDMA Resource Allocation with Ergodic Rate Maximization by : Ahmad Mahmoud El Hajj

Download or read book Optimized Uplink OFDMA Resource Allocation with Ergodic Rate Maximization written by Ahmad Mahmoud El Hajj. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt: Two broadband wireless standards have recently emerged as candidates for the evo lution of current state-of-the-art wireless systems: 3GPP Long Term Evolution (L TE) and mobile WiMAX (IEEE 802.16e). These standards have adopted Orthogonal Fre quency Division Multiple Access (OFDMA) as an accessing scheme due to its immuni ty to inter-symbol interference and frequency selective fading. With the limited power and bandwidth resources and the tight QoS requirements, optimized resourc e allocation to mobile users in the network becomes a must. The issue of resourc e allocation in OFDMA has been widely investigated in the downlink both in the c ase of instantaneous rate maximization and ergodic rate maximization. On the con trary, little work has been accomplished in the uplink, and none considered ergo dic rate maximization. In this thesis, we formulate and solve the ergodic rate m aximization problem in the uplink of OFDMA systems subject to per-user power con straints in order to take advantage of the additional temporal dimension. The in itial problem is then modified and solved to impose fairness considerations in t he system. Dual optimization techniques are used and solutions are obtained with zero duality gap. Results demonstrate the gains provided by the obtained soluti ons over other uplink resource allocation algorithms from the literature.

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