【摘要】 移动通信中速率控制和功率分配是无线资源管理的基础,对于保证业务的质量有重要的作用。本文研究了多码CDMA系统多业务情况下的速率控制和功率分配问题。通过对业务分优先级,速率控制可保证不同业务质量要求,同时总的吞吐量最大。建立了多码CDMA系统的归一化链路增益矩阵,功率分配归结为求解该矩阵在有约束条件下的最大实特征值。本文算法通过业务分级给不同用户的分配传输速率,并通过基于信噪比的功率分配,可充分利用了系统资源,仿真验证了该算法的性能。更多还原

【Abstract】 Rate allocation and power distribution is the foundation of radio resource management. They are important to guarantee the traffic’s QoS. In this paper power distribution and rate allocation for multisercive in multicode CDMA systems is studied to improve system performance. By grading traffic priority, rate allocation ensures the QoS requirement for different traffic, and throughput is maximized. Normalized path gain for multi-code CDMA system is constructed, and power allocation is achieved by eigenvector of normalized path gain matrix. The algorithm achieves high resource utilization by specification for users’ different transmission rates and SIR based power allocation. Simulation results are given to demonstrate the algorithm’s performance.更多还原