基于干扰抑制的上行多基站协作能效算法

发布时间：2018-06-20 22:17

本文选题：协作多点 + 小区间干扰抑制　；参考：《计算机应用》2014年09期

【摘要】：针对上行链路多基站协作通信系统中联合处理功耗过高的问题,提出了一种基于小区间干扰抑制的上行多基站协作能效算法(ICIR-UMBCEEA)。首先,通过解码参考信号(DMRS)序列得到等效噪声和协作多点(CoMP)估计信道,推导出CoMP信道的干扰抑制合并(IRC)滤波矩阵;其次,建立等效干扰模型,利用IRC滤波矩阵得到了小区间平均干扰;最后,计算出各小区用户对非CoMP集合小区的干扰程度,针对强干扰用户作出联合处理。理论分析和链路仿真表明,与上行协作多基站最优注水功率控制算法(UMBCA-OWFC)相比,ICIR-UMBCEEA的用户归一化平均干扰在中心用户和边缘用户处的下降幅度分别为19.2%和24.5%;而ICIR-UMBCEEA的能量利用效率在中心用户和边缘用户处分别提高了25.48%和18.03%;ICIR-UMBCEEA所消耗的能量更小,其中心用户的吞吐量更高,而边缘用户的吞吐量则与UMBCA-OWFC相差不大。实验结果表明,ICIR-UMBCEEA在实际工程中能够有效提高系统的能量效率。
[Abstract]:Aiming at the problem of high power consumption of joint processing in uplink multi-base station cooperative communication system, a cooperative energy efficiency algorithm for uplink multi-base station cooperation based on inter-cell interference suppression is proposed. First of all, the equivalent noise and cooperative multipoint CoMP-based channel estimation are obtained by decoding the reference signal DMRS sequence, and the interference suppression and merging IRCfiltering matrix of the comp channel is derived. Secondly, the equivalent interference model is established. By using the IRC filter matrix, the average intercellular interference is obtained. Finally, the interference degree of each cell user to the non-CoMP set cell is calculated, and the joint processing is made for the strong interference user. Theoretical analysis and link simulation show that, Compared with uplink cooperative multi-base station optimal water injection power control algorithm, UMBCA-OWFC), the average normalized interference of ICIR-UMBCEEA decreases by 19.2% and 24.5b at central user and edge user, respectively, while ICIR-UMBCEEA 's energy utilization efficiency is at central user and edge user. The energy consumed by ICIR-UMBCEEA increased by 25.48% and 18.03%, respectively. The throughput of central users is higher, while that of edge users is similar to that of UMBCA-OWFC. The experimental results show that ICIR-UMBCEEA can effectively improve the energy efficiency of the system in practical engineering.
【作者单位】：移动通信技术重庆市重点实验室(重庆邮电大学);
【基金】：国家自然科学基金资助项目(61201205) 重庆市自然科学基金资助项目(cstc2012jjA40042,cstc2013jjB0114) 重庆市教委优秀成果转化项目(Kjzh11206)
【分类号】：TN929.5

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