Abstract
This paper exploits the signal algebraic structure on the uplink of OFDMA system adopting interleaved carrier assignment scheme for synchronization and user separation. We first propose a subspace based method to estimate multiple user CFO deterministically using only one OFDMA block. Next, we derive a MMSE filter which can extract the ideal received signal waveform of all users individually to implement user separation and frequency synchronization at the same time. Time synchronization is carried out on single user's signal The performance of the proposed algorithms is evaluated by simulations.
| Original language | English |
|---|---|
| Pages (from-to) | 1842-1846 |
| Number of pages | 5 |
| Journal | Conference Record - Asilomar Conference on Signals, Systems and Computers |
| Volume | 2 |
| State | Published - 2002 |
| Event | The Thirty-Sixth Asilomar Conference on Signals Systems and Computers - Pacific Groove, CA, United States Duration: 3 Nov 2002 → 6 Nov 2002 |