Abstract
This paper investigates the problem of resource allocation for quality of service (QoS) support in Orthogonal Frequency Division Multiple Access (OFDMA) based WiBro systems. We identify the key QoS parameters as data rate and bit error rate (BER), which are used to determine the individual traffic demands. We propose a resource allocation algorithm to provide dual-service, Guaranteed Performance (GP) and Best Effort (BE) differentiated on the basis of required QoS. Subcarrier assignment and power allocation are carried out sequentially to reduce the complexity, and GP users are given priority over BE users in assigning subcarrier and allocating power. We present the simulation results of the proposed algorithms applied to frequency selective Rayleigh fading channel with additive white Gaussian noise (AWGN) and OFDMA.
Original language | English |
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Title of host publication | Lecture Notes in Computer Science |
Number of pages | 10 |
Volume | 3391/2005 |
Publisher | Springer |
Publication date | 2005 |
Pages | 725-734 |
Publication status | Published - 2005 |
Event | International Conference on Information Networking - Jeju Island, Korea, Republic of Duration: 31 Jan 2005 → 2 Feb 2005 |
Conference
Conference | International Conference on Information Networking |
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Country/Territory | Korea, Republic of |
City | Jeju Island |
Period | 31/01/2005 → 02/02/2005 |