Title :
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
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;
Conference_Titel :
Information Science and Engineering (ICISE), 2009 1st International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4909-5
DOI :
10.1109/ICISE.2009.55
