A noncoherent, bandwidth-efficient modulation scheme is proposed for frequency-hopping multiple-access (FH-MA) networks. The proposed scheme is a combination of noncoherent -ary amplitude-shift keying (NMASK) and orthogonal frequency-division

Coherent and Noncoherent Single- and Multi-user Detection in CDMA Systems By Prof.Lie-Liang Yang Southampton Wireless School of Electronics and Computer Science University of Southampton