| 基于高阶累积量的LCP-GLSTBC-OFDM信号调制识别 |
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| 引用本文： | 战金龙,门健.基于高阶累积量的LCP-GLSTBC-OFDM信号调制识别[J].空军工程大学学报,2012(4):86-90. |
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| 作者姓名： | 战金龙 门健 |
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| 作者单位： | 1.西安邮电学院通信与信息工程学院,陕西西安,710061;2.空军工程大学信息与导航学院,陕西西安，710077 |
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| 基金项目： | 陕西省自然科学基金资助项目(1090275)；陕西省教育厅科研计划资助项目(11JK1011；09JK726)；智能机器人湖北省重点实验室基金资助项目(HBIR 201102);2010年科技部科研院所基金资助项目( 2010EG126237) |
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| 摘 要： | 提出了频率选择性衰落信道条件下基于高阶累积量的LCP(Linear Constellation Precoding)-GLSTBC (Group Layered Space-Time Block Coding architecture)-OFDM (Orthogonal Frequency-Division Multiplexing) 信号识别算法，用以区分LCP-GLSTBC结构下的多载波信号(OFDM)和单载波信号(MPSK、MQAM)。该算法不需要预先知道信号和信道噪声的先验信息，也不需要对接收的信号进行解调，只需从接收的中频信号直接进行识别处理，分别求出接收信号的2阶和4阶累积量，然后构造特征参数消除信道衰落的影响。仿真结果表明：在SNR高于5dB时，对多载波和单载波信号的识别率大于90%。
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| 关 键 词： | 调制识别，高阶累积量，OFDM，GLSTBC |
Modulation Recognition Based on HOC for LCP-GLSTBC-OFDM Signals |
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| ZHAN Jin-long,MEN Jian.Modulation Recognition Based on HOC for LCP-GLSTBC-OFDM Signals[J].Journal of Air Force Engineering University(Natural Science Edition),2012(4):86-90. |
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| Authors: | ZHAN Jin-long MEN Jian |
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| Abstract: | Based on high-order cumulates, a novel recognition algorithm is proposed for LCP-GLSTBC (Group Layered Space-Time Block Coding) OFDM (Orthogonal Frequency-Division Multiple) signals to distinguish multi-carrier modulated signals (OFDM) from single-carrier modulated signals (MPSK and MQAM). The proposed algorithm can be used to directly process inter-frequency signals without the prior information about the transmit signal and the channel noise. Simulation results confirm the validity of the proposed algorithm and show that over 90% correct classification rate could be reached when SNR is above 5 dB. |
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| Keywords: | modulation recognition high-order cumulates OFDM GLSTBC |
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