Downlink-to-uplink interference cancellation in cloud radio access networks

Wei Ting Lin, Chia-Han Lee, Hsuan Jung Su

研究成果: Conference article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Dynamically choosing the time-division duplex (TDD) configuration in Long-Term Evolution (LTE) results in intercell interference. Among various interference types, the downlink-to-uplink interference is the strongest due to the much larger downlink (DL) transmission power from a base station than the uplink (UL) transmission power from a user equipment (UE). Although coordinating the neighboring base stations to operate in the same UL/DL configuration is a way to mitigate the interference, the flexibility of TDD is sacrificed. In this paper, we discuss an interference cancellation method exploiting the cloud radio access network (C-RAN) architecture. The downlink- to-uplink interference is cancelled by utilizing the knowledge of the downlink signal available at the cloud server. Simulation results show the effectiveness of this method, which maintains the flexibility of dynamically choosing the UL/DL configuration according to the traffic demand in the TDD system.

原文English
文章編號7022892
期刊IEEE Vehicular Technology Conference
2015-January
發行號January
DOIs
出版狀態Published - 1 1月 2014
事件2014 79th IEEE Vehicular Technology Conference, VTC 2014-Spring - Seoul, Korea, Republic of
持續時間: 18 5月 201421 5月 2014

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