A Pilot Sequence Design Scheme for Inter-Cell Interference Mitigation in OFDM Systems under Time-Varying Channels

doi:10.13190/jbupt.200803.67.286

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (3): 67-70.doi: 10.13190/jbupt.200803.67.286

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A Pilot Sequence Design Scheme for Inter-Cell Interference Mitigation in OFDM Systems under Time-Varying Channels

WU Xiao-guang1,2, WANG Qiang1,2, CAO Peng1,2, KANG Gui-xia1,2, ZHANG Ping1,2

1.Key Laboratory of Wireless Communication (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China; 2. Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China

Received:2007-09-18 Revised:1900-01-01 Online:2008-06-28 Published:2008-06-28
Contact: WU Xiao-guang

Abstract

Abstract:

In a fully-loaded orthogonal frequency division multiplexing (OFDM) cellular environment with a frequency reuse factor equal to 1, any users moving at the cell boundary at a high speed will suffer both an inter-carrier interference caused by the time varying (TV) channels and an inter-cell interference. The scheme of pilot design in the downlink at the cell boundary is addressed, aiming at mitigating the two interferences mentioned above. The properties of the pilots are described, and the simulation results are presented.

Key words: orthogonal frequency division multiplexing, pilot design, inter-carrier interference

CLC Number:

TN911.22

WU Xiao-guang1,2, WANG Qiang1,2, CAO Peng1,2, KANG Gui-xia1,2, ZHANG Ping1,2. A Pilot Sequence Design Scheme for Inter-Cell Interference Mitigation in OFDM Systems under Time-Varying Channels[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(3): 67-70.

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A Pilot Sequence Design Scheme for Inter-Cell Interference Mitigation in OFDM Systems under Time-Varying Channels

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