OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
Information Theory and Reliable Communication
Information Theory and Reliable Communication
Subcarrier Allocation and Bit Loading Algorithms for OFDMA-Based Wireless Networks
IEEE Transactions on Mobile Computing
Cross-layer optimization for OFDM wireless networks-part I: theoretical framework
IEEE Transactions on Wireless Communications
Cross-layer optimization for OFDM wireless networks-part II: algorithm development
IEEE Transactions on Wireless Communications
Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints
IEEE Transactions on Wireless Communications
Low complexity adaptive power and subcarrier allocation for OFDMA
IEEE Transactions on Wireless Communications
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
IEEE Network: The Magazine of Global Internetworking
The communication infrastructure for emergency management: the In.Sy.Eme. vision
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
A graph-based resource allocation algorithm for downlink MIMO-OFDMA networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Proceedings of the 13th ACM international conference on Modeling, analysis, and simulation of wireless and mobile systems
Opportunistic sub-carrier allocation algorithm for soft frequency reuse in OFDMA systems
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication
New cross-layer QoS-based scheduling algorithm in LTE system
CIT'11 Proceedings of the 5th WSEAS international conference on Communications and information technology
A fast and efficient algorithm to exploit multi-user diversity in IEEE 802.16 BandAMC
Computer Networks: The International Journal of Computer and Telecommunications Networking
Performance Comparison of Two Channel Allocation Strategies in Cellular Networks
Wireless Personal Communications: An International Journal
Maximum Achievement Rate Allocation Algorithm for Downlink Multi-User OFDMA Systems
Wireless Personal Communications: An International Journal
Cross-Layer Design Using Superposition Coding Scheme for Multiuser OFDM Systems
Wireless Personal Communications: An International Journal
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WiMAX is one of the most important technologies for providing a Broadband Wireless Access (BWA) in a metropolitan area. The use of OFDM transmissions has been proposed to reduce the effect of multipath fading in wireless communications. Moreover, multiple access is achieved by resorting to the OFDMA scheme. Adaptive subcarrier allocation techniques have been selected to exploit the multiuser diversity, leading to an improvement of performance by assigning subchannels to the users accordingly with their channel conditions. A method to allocate subcarriers is to assign almost an equal bandwidth to all users (fair allocation). However, it is well known that this method limits the bandwidth efficiency of the system. In order to lower this drawback, in this paper, two different adaptive subcarrier allocation algorithms are proposed and analyzed. Their aim is to share the network bandwidth among users on the basis of specific channel conditions without loosing bandwidth efficiency and fairness. Performance comparisons with the static and the fair allocation approaches are presented in terms of bit error rate and throughput to highlight the better behavior of the proposed schemes in particular when users have different distances from the BS.