- Tytuł:
- Frequency Offset Compensation for OFDM Systems Using a Combined Autocorrelation and Wiener Filtering Scheme
- Autorzy:
-
Ramadan Ali, A.
Khanzada, T. J.
Omar, A. - Powiązania:
- https://bibliotekanauki.pl/articles/308065.pdf
- Data publikacji:
- 2010
- Wydawca:
- Instytut Łączności - Państwowy Instytut Badawczy
- Tematy:
-
channel characterization
frequency offset
OFDM measurement
Wiener filtering - Opis:
- One of the orthogonal frequency division multiplexing (OFDM) system disadvantages is its sensitivity to frequency offset and phase noise, which lead to losing the orthogonality between the subcarriers and thereby degrade the system performance. In this paper a joint scheme for frequency offset and pilot-based channel estimation is introduced in which the frequency offset is first estimated using an autocorrelation method, and then is fined further by applying an iterative phase correction by means of pilot-based Wiener filtering method. In order to verify the capability of the estimation algorithm, the scheme has been implemented and tested using a real measurement system in a multipath indoor environment. The results show the algorithm capability of compensating for the frequency offset with different transmission and channel conditions.
- Źródło:
-
Journal of Telecommunications and Information Technology; 2010, 1; 40-47
1509-4553
1899-8852 - Pojawia się w:
- Journal of Telecommunications and Information Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł