Title :
Edge sidelobe suppressor scheme for OFDMA uplink systems
Author :
Yoo, Hwasun ; Hong, Daesik
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We propose an edge sidelobe suppressor (ESS) for the uplink of orthogonal frequency-division multiple-access (OFDMA) systems, which mitigates the interference introduced by different frequency offsets between a desired user and the other users. The simulation results confirm that the proposed ESS scheme improves system performance by approximately 5-dB signal-to-interference ratio as compared to conventional OFDMA systems, and without increasing the level of transmitter and receiver complexity.
Keywords :
OFDM modulation; frequency division multiple access; interference suppression; OFDMA; edge sidelobe suppressor; frequency offsets; interference mitigation; orthogonal frequency-division multiple-access; signal-to-interference ratio; system performance; uplink systems; Degradation; Electronic switching systems; Frequency conversion; Frequency estimation; Frequency synchronization; Interchannel interference; Interference suppression; Intersymbol interference; Multiple access interference; Timing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2003.820098
