Distribution of the ICI Term in Phase Noise Impaired OFDM Systems
| Autor: | P.F.M. Smulders, ER Erik Fledderus, R.W. van der Hofstad, T.C.W. Schenk |
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| Přispěvatelé: | Statistics |
| Rok vydání: | 2007 |
| Předmět: |
Approximation theory
Orthogonal frequency-division multiplexing Applied Mathematics Interference (wave propagation) Computer Science Applications Term (time) Complex normal distribution symbols.namesake Phase noise Statistics symbols Bit error rate Astrophysics::Earth and Planetary Astrophysics Electrical and Electronic Engineering Gaussian process Algorithm Computer Science::Information Theory Mathematics |
| Zdroj: | IEEE Transactions on Wireless Communications, 6(4), 1488-1500. Institute of Electrical and Electronics Engineers |
| ISSN: | 1536-1276 |
| DOI: | 10.1109/twc.2007.348345 |
| Popis: | Orthogonality between the subcarriers of an orthogonal frequency division multiplexing (OFDM) system is affected by phase noise, which causes inter-carrier interference (ICI). The distribution of this interference term is studied in this paper. The distribution of the ICI for large number of carriers is derived and it is shown that the complex Gaussian approximation, generally applied in previous literature, is not valid and that the ICI term exhibits thicker tails. An analysis of the tail probabilities confirms these finding and shows that bit-error probabilities are severely underestimated when the Gaussian approximation for the ICI term is used, leading to too optimistic design criteria. Results from a simulation study confirm the analytical findings and show the validity of the limit distribution, obtained under the assumption of a large number of subcarriers, already for a modest number of subcarriers. |
| Databáze: | OpenAIRE |
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