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首页> 外文期刊>IEICE Transactions on Communications >Study of Multi-Cell Interference in a 2-Hop OFDMA Virtual Cellular Network
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Study of Multi-Cell Interference in a 2-Hop OFDMA Virtual Cellular Network

机译：2跳OFDMA虚拟蜂窝网络中的多小区干扰研究

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摘要

In the literature, many resource allocation schemes have been proposed for multi-hop networks. However, the analyses provided focus mainly on the single cell case. Inter-cell interference severely degrades the performance of a wireless mobile network. Therefore, incorporating the analysis of inter-cell interference into the study of a scheme is required to more fully understand the performance of that scheme. The authors of this paper have proposed a parallel relaying scheme for a 2-hop OFDMA virtual cellular network (VCN). The purpose of this paper is to study a new version of that scheme which considers a multi-cell environment and evaluate the performance of the VCN. The ergodic channel capacity and outage capacity of the VCN in the presence of inter-cell interference are evaluated, and the results are compared to those of the single hop network (SHN). Furthermore, the effect of the location and number of wireless ports in the VCN on the channel capacity of the VCN is investigated, and the degree of fairness of the VCN relative to that of the SHN is compared. Using computer simulations, it is found that in the presence of inter-cell interference, a) the VCN outperforms the SHN even in the interference dominant transmission power region (when a single cell is considered, the VCN is better than the SHN only in the noise dominant transmission power region), b) the channel capacity of the VCN remains greater than that of the SHN even if the VCN is fully loaded, c) an optimal distance ratio for the location of the wireless ports can be found in the interval 0.2~0.4, d) increasing the number of wireless ports from 3 to 6 can increase the channel capacity of the VCN, and e) the VCN can achieve better outage capacity than the SHN.
机译：在文献中，已经提出了用于多跳网络的许多资源分配方案。但是，提供的分析主要集中在单细胞情况下。小区间干扰严重降低了无线移动网络的性能。因此，需要将小区间干扰的分析整合到方案的研究中，以更充分地了解该方案的性能。本文的作者提出了一种2跳OFDMA虚拟蜂窝网络（VCN）的并行中继方案。本文的目的是研究该方案的新版本，该版本考虑了多小区环境并评估了VCN的性能。评估在小区间干扰情况下VCN的遍历信道容量和中断容量，并将结果与​​单跳网络（SHN）的结果进行比较。此外，研究了VCN中无线端口的位置和数量对VCN的信道容量的影响，并比较了VCN相对于SHN的公平程度。通过计算机仿真发现，在小区间干扰的情况下，a）即使在干扰占主导的发射功率区域中，VCN的性能也优于SHN（当考虑单个小区时，VCN仅在小干扰情况下比SHN好）噪声占主导地位的发射功率区域），b）即使VCN满载，VCN的信道容量仍大于SHN的信道容量，c）可以在间隔0.2中找到无线端口位置的最佳距离比〜0.4，d）将无线端口的数量从3个增加到6个可以增加VCN的信道容量，并且e）VCN可以实现比SHN更好的中断容量。

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