| 任意载波分配OFDMA上行链路同步 |
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| 引用本文： | 王桂彬,宋高俊,赵文婷,王佳仲.任意载波分配OFDMA上行链路同步[J].计算机系统应用,2014,23(1):132-135,113. |
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| 作者姓名： | 王桂彬 宋高俊 赵文婷 王佳仲 |
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| 作者单位： | 南昌航空大学 信息工程学院, 南昌 330063;南昌航空大学 信息工程学院, 南昌 330063;南昌航空大学 信息工程学院, 南昌 330063;南昌航空大学 信息工程学院, 南昌 330063 |
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| 摘 要： | 为了获得任意载波分配正交频分复用多址（OFDMA）系统上行链路更优的频率偏移（CFOs）和定时误差（TEs）联合估计性能, 利用恒包络零自相关（Constant Amplitude Zero Auto Correlation;CAZAC）序列和增加训练块数对已有的联合估计算法进行改进。虽然传输效率降低, 但是估计性能有所提高, 这种牺牲是值得的。仿真结果表明, 这种改进算法估计性能更好, 应用范围更为广泛。
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| 关 键 词： | 任意子载波分配OFDMA上行链路 联合估计 时频偏移 CAZAC序列 |
| 收稿时间： | 6/1/2013 12:00:00 AM |
| 修稿时间： | 2013/7/15 0:00:00 |
Synchronization for Generalized-OFDMA Uplink |
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| WANG Gui-Bin,SONG Gao-Jun,ZHAO Wen-Ting and WANG Jia-Zhong.Synchronization for Generalized-OFDMA Uplink[J].Computer Systems& Applications,2014,23(1):132-135,113. |
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| Authors: | WANG Gui-Bin SONG Gao-Jun ZHAO Wen-Ting and WANG Jia-Zhong |
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| Affiliation: | School of Information Engineering, Nanchang Institute of Aeronautical University, Nanchang 330063, China;School of Information Engineering, Nanchang Institute of Aeronautical University, Nanchang 330063, China;School of Information Engineering, Nanchang Institute of Aeronautical University, Nanchang 330063, China;School of Information Engineering, Nanchang Institute of Aeronautical University, Nanchang 330063, China |
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| Abstract: | In order to obtain a better performance of joint estimation frequency offsets (CFOs) and timing errors (TEs) for the uplink transmission of Orthogonal Frequency Division Multiple Access (OFDMA) companied with a generalized carrier assignment scheme, the use of Constant Amplitude Zero Auto Correlation(CAZAC) sequence and increasing the number of training blocks improve the existing algorithm of joint estimation.Although the efficiency of transmission is reduced, the performance of estimation has improved and this sacrifice is worth it. Simulation results show that the performance of improved algorithm of estimation is better than the original algorithm and its application range is more extensive. |
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| Keywords: | generalized-OFDMA uplink joint estimation timing-frequency offset CAZAC sequence |
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