Abstract: A novel M-ary spread spectrum receiver using biorthogonal cyclic codes is proposed. In the transmitter, every user uses biorthogonal cyclic codes to realize the spreading spectrum, and the proposed receiver can achieve despreading with only one transform domain matched-filter. Compared with the traditional M-ary spread spectrum system, the proposed scheme effectively reduces the computation complexity and the PN codes selection difficuly of the M-ary spread spectrum system.

Key words: M-ary spread spectrum, biorthogonal cyclic codes, transform domain processing