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Handover Sequences for Interference-Aware Transmission in Multicell MIMO Networks
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Providing cell-specific reference signals is a basic requirement for advanced transmission techniques reducing the inter-cell interference in the mobile radio network. In this paper, we introduce so-called handover sequences. They consist of a comb cyclically shifted in the frequency domain to identify the cells. Orthogonal sequences in time domain are used to identify the antennas within a cell. The scheme occupies few OFDM symbols per coherence interval. Sequence assignment to the cells follows a classical frequency-reuse scheme. Detection is easily implementable. With these sequences, the frequency-selective multi-cell channel can be identified with high precision also at the cell edge. We demonstrate that handover decisions are more reliable and channel estimation errors are reduced by more than a decade compared to the reference signals provided in 3GPP LTE Release 8.
- Multi-antenna Systems
- Multi-carrier Systems
@inproceedings{JMTWH09hsft,
author = "Volker Jungnickel and Konstantinos Manolakis and Lars Thiele and Thomas Wirth and Thomas Haustein",
title = "{Handover Sequences for Interference-Aware Transmission in Multicell MIMO Networks}",
booktitle = "{International ITG Workshop on Smart Antennas (WSA 2009)}",
address = "Berlin, Germany",
month = feb,
year = "2009",
}
Last modified 29.08.2012 10:03
Fokusseminar 02.11.2012
