Interleaved OFDMA Systems with Adaptive Common Carrier Frequency Offset Correction
An interleaved OFDMA system with a new carrier frequency offset (CFO) correction scheme is studied. The previous proposals for OFDMA compensating for the CFO effect at the OFDMA receiver can remain multiple access interference (MAI). Although some MAI cancellation schemes have been proposed to mitigate the MAI effect, we found that the minimum mean square error (MMSE) performance of demodulated signals is related to a common CFO (CCFO) value which should be corrected before the DFT. In this paper we explore an adaptive CCFO correction scheme and evaluate the performance of the interleaved OFDMA receiver utilizing the new CCFO correction scheme to achieve the optimal MSE performance. Simulation results show that the previous proposals for OFDMA in conjunction with the new CCFO correction algorithm can have better performance than their original proposals in interleaved OFDMA systems.
Dah-Chung Chang Yen-Heng Lai Yung-Li Lai
Department of Communication Engineering, National Central University No.300, Jhongda Rd., Jhongli, Taoyuan 320, Taiwan China
国际会议
2009国际通信电路与系统学术会议(ICCCAS 2009)(2009 International Conference on Communications，Circuits and Systems)
成都
英文
43-47
2009-07-23（万方平台首次上网日期，不代表论文的发表时间）