A radio resource allocation and scheduling scheme for multi-user MIMO/OFDMA systems

作者：Sun Kai^*; Wang Ying; Wang Tan; Chen Zi Xiong; Zhang Ping

来源：Journal of Beijing University of Posts and Telecommunications, 2008, 31(5): 131-134.

• Bit loadings
• Channel conditions
• Channel correlations
• Data rates
• Delay requirements
• Frequency domains
• Heterogeneous services
• Heterogeneous traffic
• Multi-user diversities
• Packet dropping probabilities
• Power allocations
• QOS requirements
• Quality of services (qos)
• Radio resource allocations
• Real-time services
• Scheduling schemes
• Simulation results
• State informations
• Sub carriers
• System performances
• System throughputs
• User selections

A radio resource allocation and scheduling algorithm for multi-user MIMO/OFDMA systems is proposed to efficiently support the diverse quality of service (QoS) requirements of heterogeneous services. Firstly, the priority is given by taking into account QoS requirements, channel conditions, throughput, and queue state information. Then, the user selection on the same subcarrier based on the channel correlation, power allocation, and bit loading are implemented. The algorithm aims to maximize the system throughput by fully exploiting multi-user diversity gain in space, time, and frequency domain while guaranteeing the delay requirement for real-time services and minimum rate requirement for non-real-time services. The simulation results show that the proposed algorithm improves the system performance in terms of the system throughput, packet dropping probability, and the ratio of unsatisfied minimum data rate of non-real-time services.

• 出版日期2008
• 单位北京大学