发明名称 |
Uplink signal receiving method and apparatus using successive interference cancellation in wireless transmission system based on OFDMA |
摘要 |
An uplink signal receiving method and apparatus using successive interference cancellation (SIC) in a wireless transmission system based on Orthogonal Frequency Division Multiple Access (OFDMA) are provided. The uplink signal receiving method includes storing in a provisional storage each uplink intermediate frequency (IF) signal received through an antenna of a base station and subjected to analog-to-digital conversion; analyzing the uplink IF signals stored in the provisional storage and determining a terminal to be restored; converting a data symbol of the determined terminal to be restored from a time domain into a frequency domain; performing channel/phase correction on the converted data symbol; demodulating the corrected data symbol; determining if there is a terminal to be restored; and when there is a terminal to be restored, removing the demodulated data symbol of the terminal to be restored from the temporarily stored uplink IF signals and then updating the uplink IF signals; thereby, to reducing interference between sub-carriers of the terminals caused by deviation of a center frequency of the sub-carriers of terminals constituting the uplink signal in the OFDMA-based wireless transmission system.
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申请公布号 |
EP1838030(A2) |
申请公布日期 |
2007.09.26 |
申请号 |
EP20060025649 |
申请日期 |
2006.12.12 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KO, SEONG-YUN;YOUN, MYEON-KEE;PARK, JOO-YONG |
分类号 |
H04L5/02;H04J11/00;H04L5/00;H04L25/02;H04L25/03;H04L27/26 |
主分类号 |
H04L5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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