Abstract
In this paper, we study methods for code acquisition in a burst-type
ultra-wideband (UWB) frequency-hopped (FH) orthogonal frequency division
multiplexing (OFDM) system. In the first scenario, the time-frequency code
(TFC) that controls the frequency-hopping is assumed to be completely unknown
to the receiver, while in the other scenario we make simplifying assumptions
with regard to the TFC. Data-aided (DA) decision variable generation method is
used, which aims at keeping the acquisition time and training data overhead
to a minimum. Parallel and serial receiver algorithms are proposed for the
scenarios, and an iterative serial method for acquiring the TFC is developed.
While the parallel receiver enables fast detection, in some cases it is
unfeasible due to its complexity. The receiver using the low-complexity serial
approach needs more information about the TFC to ensure efficient operation.
Simulation results prove that it achieves good performance when such
conditions exist.
Original language | English |
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Title of host publication | 2007 4th International Symposium on Wireless Communication Systems |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Pages | 577-581 |
ISBN (Electronic) | 978-1-4244-0979-2 |
ISBN (Print) | 978-1-4244-0978-5 |
DOIs | |
Publication status | Published - 2007 |
MoE publication type | A4 Article in a conference publication |
Event | 4th International Symposium on Wireless Communication Systems, ISWCS’07 - Trondheim, Norway Duration: 17 Oct 2007 → 19 Oct 2007 Conference number: 4 |
Conference
Conference | 4th International Symposium on Wireless Communication Systems, ISWCS’07 |
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Abbreviated title | ISWCS’07 |
Country/Territory | Norway |
City | Trondheim |
Period | 17/10/07 → 19/10/07 |
Keywords
- timing synchronization
- multi-carrier modulation
- frequency-hopping
- training signal
- differential correlation
- OFDM modulation
- hopping code