IEEE Transactions on Wireless Communications
On bounding the number of mobiles sharing a slot in a point-to-multipoint network
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Equalization and Carrier Frequency Offsets Compensation for the SC-FDMA System
Wireless Personal Communications: An International Journal
Computers and Electrical Engineering
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Similar to OFDM systems, OFDMA systems also suffer from frequency mismatches between the receiver and the transmitter. However, the fact that each uplink user has a different frequency offset makes the compensation more challenging than that of OFDM systems. This letter proposes successive interference cancellation (SIC) for compensating the frequency offset in the uplink OFDMA systems. A decorrelator is used to remove the inter-carrier interference (ICI) within a user's signal and successive cancellation is applied to mitigate the multi access interference (MAI) arising due to the frequency difference among uplink users. The proposed algorithm is shown to eliminate the interference and has a manageable complexity.