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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jingya Li Papadogiannis, A. Apelfrojd, R. Svensson, T. Sternad, M. |
| Copyright Year | 2012 |
| Description | Author affiliation: Signals and Systems, Uppsala University, Uppsala, Sweden (Apelfrojd, R.; Sternad, M.) || Department of Signals and Systems, Chalmers University of Technology, Gothenburg, Sweden (Jingya Li; Papadogiannis, A.; Svensson, T.) |
| Abstract | Coordinated multi-point (CoMP) transmission is considered as an efficient technique to improve cell-edge performance as well as system spectrum efficiency. In CoMP-enabled systems, a cluster of coordinated base stations (BSs) are typically assumed to be connected to a control unit (CU) via backhaul links, and the provided performance gain relies heavily on the quality of the channel state information (CSI) available at the CU side. In this paper, we consider the downlink of a CoMP cluster and compare three different CoMP transmission schemes: zero-forcing coherent joint transmission, non-coherent joint transmission and coordinated scheduling. Moreover, for each of the analyzed schemes, the performance in terms of average sum rate of the CoMP cluster is studied with predicted CSI, considering the effects of the feedback and backhaul latency, as well as the user mobility. Compared to zero-forcing coherent joint transmission, we show that non-coherent joint transmission and coordinated scheduling are more robust to channel uncertainty. In addition, depending on the latency, user mobility and user locations, different schemes would achieve the highest average sum rate performance. Hence, a system could switch between the transmission schemes to improve the sum rate. |
| Starting Page | 1055 |
| Ending Page | 1060 |
| File Size | 230314 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467325660 |
| ISSN | 21669570 |
| e-ISBN | 9781467325691 |
| e-ISBN | 9781467325684 |
| DOI | 10.1109/PIMRC.2012.6362501 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-09-09 |
| Publisher Place | Australia |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Joints Vectors Resource management Interference Signal to noise ratio Fading Delay |
| Content Type | Text |
| Resource Type | Article |
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