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Pilot signaling for multi-cell OFDMA uplink systems
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- Authors
- Issue Date
- 2004-07
- Citation
- ITC-CSCC 2004. The 2004 International Technical Conference on Circuits/Systems, Computers and Communications, 2004
- 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
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