计算机科学 ›› 2014, Vol. 41 ›› Issue (7): 184-186.doi: 10.11896/j.issn.1002-137X.2014.07.038
陈明
CHEN Ming
摘要： 认知无线电(CR)技术和能效(EE)通信设计这两种技术已经使得系统分别达到较高的频谱效率(SE)和能源利用效率(EE)。然而在认知无线电系统中,既要保持较高的频谱效率,又要使得能源利用效率相对较高的问题,始终少有研究。针对此问题,在正交频分复用(OFDM)认知无线电网络的基础上考虑平均能效和频谱效率折中的频谱接入方案,提出了一种低复杂度的次优启发式算法。仿真结果表明,所提算法相对于其他已有算法能够显著节约能量,并且在性能和复杂度方面具有较大优势。
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