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研究了适用于单载波频分多址(SC-FDMA)中继系统中的资源分配算法。针对SC-FDMA系统的子信道相邻限制,提出了一种基于集合划分问题的最优资源分配算法。为降低计算复杂度,还提出了一种基于贪婪试探性思想的次优算法。仿真结果表明,最优算法的频谱利用率显著高于随机算法,而贪婪次优算法能达到接近最优算法的性能,并且具有较低的计算复杂度。?
The resource allocation algorithm for single-carrier frequency division multiple access (SC-FDMA) relay system is studied. Aiming at the sub-channel adjacent restriction of SC-FDMA system, an optimal resource allocation algorithm based on set partitioning problem is proposed. In order to reduce the computational complexity, a suboptimal algorithm based on greedy heuristic is proposed. The simulation results show that the spectral efficiency of the optimal algorithm is significantly higher than that of the stochastic algorithm, while the greed suboptimal algorithm can achieve the performance close to the optimal algorithm, and has a lower computational complexity. ?