【摘要】 高速无线数据传输利用自适应的资源分配方式以对抗无线传输环境的不利影响。基于单载波频分复用系统提出一种最大平均容量动态子载波分配算法,并在此算法基础上引入公平系数,提出一种公平度可调的动态子载波分配算法,以实现系统分配公平性与总容量性能之间的权衡。仿真结果表明,最大平均容量算法在显著降低算法复杂度的同时,能获得与贪婪算法相近的系统总容量及误码率性能。可调公平度算法通过调整公平系数,能在较大范围内调整信道资源分配的公平度,满足不同传输质量需求,且不增加算法复杂度。更多还原

【Abstract】 High-speed wireless data transmission requires adaptive resource allocation to combat radio impairments.A maximum average capacity algorithm based on single carrier frequency division multiple access(SC-FDMA) used for dynamic subcarrier allocation is proposed.On this foundation,a fairness factor is introduced to present a adjustable fairness algorithm for taking the tradeoff between allocation fairness and sum capacity.The results indicate that the maximum average capacity algorithm arrive at the same sum capacity and bit error rate as the greedy algorithm with complexity significantly decreasing.It is concluded that the adjustable fairness algorithm adjust the fairness degree of resource allocation in a wide range by changing the fairness factor and with no complexity increasing.更多还原