SSIP'07 Proceedings of the 7th WSEAS International Conference on Signal, Speech and Image Processing
A passive UHF RFID system with Huffman sequence spreading backscatter signals
IOT'08 Proceedings of the 1st international conference on The internet of things
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A Huffman sequence has a zero-sidelobe aperiodic autocorrelation function except at both shift ends. This paper presents orthogonal sets of the zero correlation zone (ZCZ) Huffman sequences and the application to a quasi-synchronous CDMA system with interferences suppressed. The sequences with low or large peak values are constructed on the basis of sequence spectra corresponding to multiple convolution of elementary sequences, and include the ZCZ sequences. The CDMA system is constructed from the ZCZ sequences, and suppresses intersymbol and interchannel interferences.