TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Interference Alignment Based Transceiver Design in OSG mode of HetNets |
| 영문제목(English Title) |
Interference Alignment Based Transceiver Design in OSG mode of HetNets |
| 저자(Author) |
Qin Niu
Zhimin Zeng
Tiankui Zhang and Zhirui Hu
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| 원문수록처(Citation) |
VOL 09 NO. 06 PP. 2014 ~ 2034 (2015. 06) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
This paper focuses on solving co-channel interference (CCI) issues arising in the open subscriber group (OSG) mode of heterogeneous networks (HetNets). Considering a general framework consisting of arbitrary number of picocells within a macro cell, where the inter-user interference (IUI) is the main CCI to macro user equipments (UEs), while the the inter-cell interference (ICI) is the major CCI to pico UEs. In this paper, three IA based transceiver design schemes are proposed. For macro cell, we uniformly use block diagonalization (BD) scheme to eliminate the IUI. And for picocells, three IA schemes are proposed to mitigate the ICI. The first scheme, named as zero forcing IA (ZF-IA) scheme, aligns the inter picocell interference onto an arbitrary sub-space of the cross-tier interference using ZF scheme. Considering the channel state information (CSI) of the desired channel of pico UEs, the second scheme, named as optimal desired sub-channel selected IA (ODC-IA) scheme, aligns the inter picocell interference onto a certain sub-space of the cross-tier interference, which guarantees the largest channel gain of the desired signal of pico UEs. The third IA scheme, named as maximum cross-tier interference selected IA (MI-IA) scheme, is designed for the system with less receive antennas. The inter picocell interference is aligned onto the space of the strongest cross-tier interference and only the interference on this space is nullified. The complexity analysis and simulations show that the proposed transceiver design schemes outperform the existing IA schemes in the OSG mode of HetNets, and the MI-IA scheme reduces the requirement of the receive antennas number with lower complexity.
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| 키워드(Keyword) |
Cloud computing
Cloud simulators
Request assignment
Load balancing
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| 파일첨부 |
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