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考虑同频干扰的多小区多天线协作蜂窝网络容量分析

Capacity analysis of a multi-cell multi-antenna cooperative cellular network with co-channel interference

Xiaohu Ge, Kun Huang, Cheng-Xiang Wang, Xuemin Hong, Xi Yang

摘要:

同频干扰的表征和建模对于实际多小区蜂窝网络的设计和性能评估至关重要。基于α稳定过程,提出了一种多小区多输入多输出(MIMO)蜂窝网络同频干扰的解析模型。数值分析了不同信道参数对新干扰模型的影响。此外,精确的归一化下行链路平均容量推导出一个多小区MIMO蜂窝网络的同信道干扰。此外,推导了具有同信道干扰的多小区多输入单输出(MISO)协作蜂窝网络中小区边缘用户的归一化下行平均容量的闭式表达式。从新的同信道干扰模型和容量出发,采用数值方法研究了多小区多天线蜂窝网络中协作天线和基站对小区边缘用户性能的影响。仿真结果表明,协作传输可以提高多小区多天线协作蜂窝网络的容量性能,尤其是在干扰基站密度较高的情况下。随着协作天线或基站数量的增加,容量性能增益降低。

英文摘要:

Characterization and modeling of co-channel interference is critical for the design and performance evaluation of realistic multi-cell cellular networks. In this paper, based on alpha stable processes, an analytical co-channel interference model is proposed for multi-cell multiple-input multi-output (MIMO) cellular networks. The impact of different channel parameters on the new interference model is analyzed numerically. Furthermore, the exact normalized downlink average capacity is derived for a multi-cell MIMO cellular network with co-channel interference. Moreover, the closed-form normalized downlink average capacity is derived for cell-edge users in the multi-cell multiple-input single-output (MISO) cooperative cellular network with co-channel interference. From the new co-channel interference model and capacity, the impact of cooperative antennas and base stations on cell-edge user performance in the multi-cell multi-antenna cellular network is investigated by numerical methods. Numerical results show that cooperative transmission can improve the capacity performance of multi-cell multi-antenna cooperative cellular networks, especially in a scenario with a high density of interfering base stations. The capacity performance gain is degraded with the increased number of cooperative antennas or base stations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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