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Pilot signaling for multi-cell OFDMA uplink systems

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Authors
Ko, Jae-Yun; Lee, Yong-Hwan
Issue Date
2004-07
Citation
ITC-CSCC 2004. The 2004 International Technical Conference on Circuits/Systems, Computers and Communications, 2004
Keywords
pilotOFDMAuplink
Abstract
OFDMA is considered as one of the major candidates for
broadband wireless access. The OFDMA signal is usually
coherently demodulated, requiring the channel estimation
which can be estimated using a known pilot signal. In multicell
environment, the performance of channel estimation is
mainly limited by intercell interference. It is desirable to use
a pilot signal that can estimate the channel information
robust to the intercell interference in the OFDMA uplink
system. In this paper, we consider two types of pilot signal
applicable to multi-cell OFDMA uplink systems: One is
time-multiplexed pilot signal and the other is codemultiplexed
pilot signal. Simulation results show that the
code-multiplexed pilot is suitable for low mobility
environment and time-multiplexed pilot is suitable for high
mobility environment.
Language
English
URI
http://www.mk.ecei.tohoku.ac.jp/ITC-CSCC2004/

http://hdl.handle.net/10371/7161
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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