| AL-OFDM和SM-OFDM空频分组码信号盲识别方法 |
| |
| 引用本文： | 凌青,闫文君,张立民,于柯远. AL-OFDM和SM-OFDM空频分组码信号盲识别方法[J]. 系统工程与电子技术, 2021, 43(1): 19-25. DOI: 10.3969/j.issn.1001-506X.2021.01.03 |
| |
| 作者姓名： | 凌青 闫文君 张立民 于柯远 |
| |
| 作者单位： | 1. 海军航空大学航空通信教研室, 山东 烟台 2640012. 海军航空大学信息融合研究所, 山东 烟台 264001 |
| |
| 基金项目： | 泰山学者工程专项基金(ts201511020);国家自然科学基金重大研究计划(91538201) |
| |
| 摘 要： | 针对空频分组码-正交频分复用(space-frequency block codes with orthogonal frequency division multiplexing,SFBC-OFDM)信号盲识别问题,提出了一种基于互相关函数的空频分组码信号盲识别方法.首先根据不同SFBC-OFDM元素的相关性,推导了...
|
| 关 键 词： | 信号盲识别 空频分组码 互相关函数 峰值检测 认知无线电 |
| 收稿时间： | 2020-02-19 |
Blind signal recognition method of AL-OFDM and SM-OFDM space-frequency block codes |
| |
| Qing LING,Wenjun YAN,Limin ZHANG,Keyuan YU. Blind signal recognition method of AL-OFDM and SM-OFDM space-frequency block codes[J]. System Engineering and Electronics, 2021, 43(1): 19-25. DOI: 10.3969/j.issn.1001-506X.2021.01.03 |
| |
| Authors: | Qing LING Wenjun YAN Limin ZHANG Keyuan YU |
| |
| Affiliation: | 1. Aeronautical Communications Teaching and Research Office, Naval Aviation University, Yantai 264001, China2. Information Fusion Institute, Naval Aviation University, Yantai 264001, China |
| |
| Abstract: | To solve the problem of the space-frequency block codes with orthogonal frequency division multiplexing (SFBC-OFDM) blind signal recognition, a space-frequency block codes signal recognition method based on correlation function is proposed. Firstly, the correlation characteristic of transmit signal is obtained based on correlation among the different SFBC-OFDM elements. Then, the correlation characteristic of the receive signal is obtained based on the correlation among the transmit signals. Finally, the automatic signal recognition algorithm based on the peak test is proposed. The simulation result shows that the recognition probability of the proposed algorithm is 95% at a low signal to noise ratio (0 dB), and does not need channel coefficient, noise information and modulation types, and the correct identification probability is over 90% under the different modulation scheme, time offset and frequency offset. It can be applied in the engineer field such as cognitive radio systems, spectrum surveillance, and so on. |
| |
| Keywords: | blind signal recognition space-frequency block code (SFBC) correlation function peak test cognitive radio |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《系统工程与电子技术》浏览原始摘要信息 |
|
点击此处可从《系统工程与电子技术》下载全文 |
|
