A Low-Complexity Frequency Offset Estimation for Interleaved OFDMA Uplink

Author

Wang, Dayuan ; Zhang, Xiaofei ; Feng, Bao ; Yu, Jun

Author_Institution

Dept. of Electron. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2009

fDate

26-28 Dec. 2009

Firstpage

448

Lastpage

450

Abstract

Carrier-frequency offset (CFO) between the transmitter and the receiver causes the loss of orthogonality among subcarriers and further results in inter-carrier interference and multi-access interference in OFDMA system. A novel carrier-frequency offset estimation algorithm for interleaved OFDMA Uplink is proposed in this paper. This algorithm doesn´t require eigen decomposition. This algorithm has low-complexity and better performance than ESPRIT algorithm, and it only needs one OFDMA block. This algorithm is no more complex and can be implemented easily.

Keywords

OFDM modulation; frequency division multiple access; frequency estimation; intercarrier interference; radio receivers; radio transmitters; OFDMA block; carrier-frequency offset; inter-carrier interference; interleaved OFDMA uplink; low-complexity frequency offset estimation; multiaccess interference; radio receiver; radio transmitter; Computational complexity; Data models; Degradation; Frequency estimation; Information science; Interference; OFDM; Propagation losses; System performance; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Science and Engineering (ICISE), 2009 1st International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-4909-5

Type

conf

DOI

10.1109/ICISE.2009.55

Filename

5455766