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Timing Offset Interference Canceller in Multi-Link Transmission for OFDM-Based Cellular Radio Communications

Kenji HOSHINO, Atsushi NAGATE, Teruya FUJII

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Summary :

In next-generation mobile communications, it is important to improve the throughput of the cell edge as well as that of the whole cell. Multi-link transmission from two adjacent BSs has been studied for improving the throughput at the cell edge in OFDM-based cellular systems, which are major candidates for next-generation mobile communication systems. In multi-link transmission, an MS at a cell edge receives signals from both adjacent BSs by orthogonally multiplexing those signals in the frequency domain. Therefore, the cell-edge MS can utilize the frequency and power resources of both adjacent BSs, which improves the cell-edge throughput. However, when the received timing difference between the signals from both BSs exceeds the maximum permissible value, adjacent-channel interference is caused by the collapse of the orthogonality. In this paper, to resolve this issue, we propose a novel timing-offset interference canceller. To clarify the performance of the proposed canceller, this paper evaluates its performance with respect to the residual interference power and the BER by computer simulation.

Publication
IEICE TRANSACTIONS on Communications Vol.E93-B No.10 pp.2735-2741
Publication Date
2010/10/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E93.B.2735
Type of Manuscript
PAPER
Category
Wireless Communication Technologies

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