Frank Signal and Its Generalizations
Problems of Information Transmission
Analysis of KMM¯ Sequences as Spreading Codes for A-CDMA Systems
Wireless Personal Communications: An International Journal
ISCC '00 Proceedings of the Fifth IEEE Symposium on Computers and Communications (ISCC 2000)
Performance of quasisynchronous scale time code division multiple access for AWGN channel
Computers and Electrical Engineering
A study on three-phase ZCZ sequence sets
ELECTROSCIENCE'07 Proceedings of the 5th conference on Applied electromagnetics, wireless and optical communications
Wireless Personal Communications: An International Journal
Bat chirps with good properties: Zak space construction of perfect polyphase sequences
IEEE Transactions on Information Theory
On joint fine time adjustment and channel estimation for OFDM Systems
IEEE Transactions on Wireless Communications
Performance of multi-processing gain QS-CDMA over AWGN and Rayleigh fading channels
Digital Signal Processing
EURASIP Journal on Advances in Signal Processing - Special issue on recent advances in theory and methods for nonstationary signal analysis
Proposed sets of polyphase spreading sequences for DS-CDMA system
TELE-INFO'06 Proceedings of the 5th WSEAS international conference on Telecommunications and informatics
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A set of N-1 orthogonal sequences of period N 2 is proposed, where N is a natural number. Each orthogonal sequence proposed can be modulated by N complex numbers of absolute value 1, so the modulated sequence is also orthogonal. When N is an odd prime number, the absolute value of the cross-correlation function between any two of the N-1 orthogonal sequences is constant and satisfies the mathematical lower bound. This property of the cross-correlation function is not changed when each of the two orthogonal sequences is modulated by N complex numbers of absolute value 1. Two spread-spectrum multiple-access (SSMA) systems using these sequences are proposed. One system is an asynchronous SSMA system, using the proposed sequences unmodulated. The cochannel interference peak between any two channels in this system realizes the mathematical lower bound for an asynchronous SSMA system using a set of orthogonal sequences. The other system is a synchronous SSMA system without cochannel interference which uses the modulated form of the proposed sequences