A large class of binary ZCZ sequence families constructed by period doubling |
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Authors: | Wang Jinsong Qi Wenfeng |
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Institution: | Dept of Applied Mathematics,Zhengzhou Information Engineering University,Zhengzhou 450002,China |
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Abstract: | In an Approximately Synchronized Code Division Multiple Access (AS-CDMA) commu-nication system,a family with large number of Zero Correlation Zone (ZCZ) sequences is desired,which can satisfy the rapid increase of users. This paper presents a method to generate a (2L ,2M ,Zc' z )-ZCZsequence family from an original (L ,M ,Z cz)-ZCZsequence family,where Z c' z =Zcz if Z czis even and Z c' z = Zcz 1if Z czis odd. This method can also recursively act on a ZCZ sequence family to construct a series of ZCZ sequence families with large sequence number and zero correlation zone length identical to or one less than that of original ZCZ sequences. |
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Keywords: | Approximately Synchronized Code Division Multiple Access (AS-CDMA) communica-tion system Zero Correlation Zone (ZCZ) sequence families ZCZ length |
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