TR2007-066
On the Fundamentally Asynchronous Nature of Interference in Cooperative Base Station Systems
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- "On the Fundamentally Asynchronous Nature of Interference in Cooperative Base Station Systems", Tech. Rep. TR2007-066, Mitsubishi Electric Research Laboratories, Cambridge, MA, August 2007.BibTeX TR2007-066 PDF
- @techreport{MERL_TR2007-066,
- author = {Hongyuan Zhang, Neelesh Mehta, Andreas Molisch, Jin Zhang, Huaiyu Dai},
- title = {On the Fundamentally Asynchronous Nature of Interference in Cooperative Base Station Systems},
- institution = {MERL - Mitsubishi Electric Research Laboratories},
- address = {Cambridge, MA 02139},
- number = {TR2007-066},
- month = aug,
- year = 2007,
- url = {https://www.merl.com/publications/TR2007-066/}
- }
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- "On the Fundamentally Asynchronous Nature of Interference in Cooperative Base Station Systems", Tech. Rep. TR2007-066, Mitsubishi Electric Research Laboratories, Cambridge, MA, August 2007.
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Abstract:
Cooperative transmission by base stations can significantly improve the spectral efficiency of multiuser, multi-cell multiple input multiple output systems. We show that in such systems the multiuser interference is asynchronous by nature, even when perfect timing-advance mechanisms ensure that the desired signal components arrive synchronously. We establish an accurate mathematical model for the asynchronism, and use it to show that the asynchronism leads to a significant performance degradation of existing linear precoding designs that assumed synchronous interference. We consider three different previously proposed designs, and show how to modify them to effectively mitigate asynchronous interference.