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| Time-Frequency Sequence Design Based on Cognitive Collaboration |
| Jiang Xian-yang①;Zhang Chao②; Lu Jian-hua①② |
| ①Department of Electronic Engingeering, Tsinghua University, Beijing 100084, China; ②School of Aerospace, Tsinghua University, Beijing 100084, China |
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Abstract In order to improve the anti-interference performance and system capacity of cognitive Frequency Hopping Code Division Multiple Access (FH-CDMA) communication systems, a kind of time-frequency sequence with three no hit zone, which can be made reconfiguration based on cognitive collaboration, is presented by this paper. The sequence design method is proved effectively. A construction example is enumerated, as well as the performance of its Hamming correlation function is explained. This kind of construction method of time-frequency sequences can be made reconfiguration and applied highly in cognitive reconfigurable communication systems.
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Received: 27 August 2008
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2009, Vol. 31 
