Talks and Poster Presentations (with Proceedings-Entry):
P. Fertl, G. Matz:
"Multi-User Channel Estimation in OFDMA Uplink Systems Based on Irregular Sampling and Reduced Pilot Overhead";
Talk: IEEE Int. Conference on Acoustics, Speech, and Signal Processing (ICASSP),
Honolulu, Hawaii, USA;
- 04-20-2007; in: "Proc. of the IEEE Conference on Acoustics, Speech and Signal Processing (ICASSP 2007)",
This paper considers multiuser OFDMA uplink transmissions over doubly selective channels. We propose a pilot-aided channel estimator based on irregular sampling techniques. Our novel estimator features several benefits: it has low complexity, excellent performance, and enables highly flexible subcarrier allocation. Simulation results show that our scheme significantly outperforms conventional least-squares channel estimation and allows to support high-rate users with reduced pilot overhead.
OFDMA, uplink, channel estimation, irregular sampling, multiuser channels
Electronic version of the publication:
Created from the Publication Database of the Vienna University of Technology.