Frequency-Hopping Sequence Sets With Low Average and Maximum Hamming Correlation

Details Frequency-Hopping Sequence Sets With Low Average and Maximum Hamming Correlation Frequency-Hopping Sequence Sets With Low Average and Maximum Hamming Correlation

2011-08-17

arxiv.org/abs/1108.3415v1

Computer Science

Information Theory

7 pages, submitted to IEEE Transactions on Information Theory (July 27, 2011)

Scientific paper

In frequency-hopping multiple-access (FHMA) systems, the average Hamming correlation (AHC) among frequency-hopping sequences (FHSs) as well as the maximum Hamming correlation (MHC) is an important performance measure. Therefore, it is a challenging problem to design FHS sets with good AHC and MHC properties for application. In this paper, we analyze the AHC properties of an FHS set, and present new constructions for FHS sets with optimal AHC. We first calculate the AHC of some known FHS sets with optimal MHC, and check their optimalities. We then prove that any uniformly distributed FHS set has optimal AHC. We also present two constructions of FHS sets with optimal AHC based on cyclotomy. Finally, we show that if an FHS set is obtained from another FHS set with optimal AHC by an interleaving, it has optimal AHC.

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