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具有减少码间干扰的多用户混沌非相干通信系统 被引量:2

A Multi-User Chaos-based Noncoherent Communication System with Interference Cancellation
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摘要 该文用混沌载波信号代替传统载波信号,设计了一个多用户通信系统。混沌序列具有良好的相关的特性,但是不足以克服多用户通信中普遍存在的不同用户信号之间的相互干扰。利用沃尔什正交函数系优秀的正交特性,把混沌振荡器产生的混沌序列和沃尔什矩阵行向量组合,生成正交的基函数,进而产生正交的时间序列。对应不同的符号、不同的用户,会有不同的正交序列与其对应。理论推导证明改进的混沌多用户非相干通信系统可以极大地减少不同用户间信号的干扰,计算机仿真了系统的误码率性能,表明系统的性能可以得到很大提高。 Thi s paper designs a chaos-based multi-user communication system.Due to the advant age of correlation properties,it is can be used as signal carrier in convention al communication.But it is insufficient in multi -user communication system for the interference between different users.Due to the orthogonality of the W alsh functions,people can combine chaotic sequences with them to improve the tr ansmitted sequence orthogonality.Different users and different symbols of the same user will correspond to different orthogonal sequences,then the interfe rence between different users will be cancelled.The paper analyzes the perform ance theoretically.The results about the bit error rate performance in compute r simulation are agreeable.
出处 《计算机工程与应用》 CSCD 北大核心 2004年第19期38-41,共4页 Computer Engineering and Applications
基金 国家自然科学基金(编号:60372004) 教育部博士学科点基金(编号:00056107) 广东省自然科学基金项目(编号:20820)
关键词 多用户 非相干 码间干扰 混沌序列 multi-user,noncoherent ,interference b etween users,chaotic sequences
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参考文献16

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同被引文献9

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