Name
Abstract | ||
|---|---|---|
For mobile orthogonal frequency division multiplexing (OFDM) systems, time-varying channels and random phase noise introduced by the oscillator result in severe intercarrier interference (ICI), respectively, and degrade the overall OFDM system performance. However, the existing ICI reduction methods only aim at a single interference source, i.e. either time-varying channels or phase noise. Therefore, these methods are not suitable for the actual situation. In this paper, we analyze the spectral property of the transfer function composed of time-varying channels and phase noise, and propose that the transfer function can be approximated by a finite parameter complex exponential basis expansion model (CE-BEM). Then, a pilot-aided minimum mean square error estimation is adopted to estimate the CE-BEM coefficients in order to reconstruct the transfer function and reduce ICI. Finally, our simulation results show how the proposed scheme would improve the system performance in a time-varying environment with phase noise. Copyright © 2008 John Wiley & Sons, Ltd. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1002/dac.v22:4 | Int. J. Communication Systems |
Keywords | Field | DocType |
ici reduction scheme,random phase noise,ce-bem coefficient,overall ofdm system performance,time-varying channel,time-varying environment,single interference source,existing ici reduction method,transfer function,phase noise,severe intercarrier interference,ofdm | Topology,Oscillation,Telecommunications,Computer science,Minimum mean square error,Communication channel,Phase noise,Euler's formula,Real-time computing,Transfer function,Interference (wave propagation),Orthogonal frequency-division multiplexing | Journal |
Volume | Issue | ISSN |
22 | 4 | 1074-5351 |
Citations | PageRank | References |
0 | 0.34 | 9 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Wen Qin | 1 | 3 | 0.78 |
| Qicong Peng | 2 | 43 | 7.07 |