Frequency-hopped multiple-access communications with noncoherent M-ary OFDM-ASK

A. Al-Dweik, F. Xiong

Research output: Contribution to journalLetterpeer-review

37 Scopus citations


A noncoherent, bandwidth-efficient modulation scheme is proposed for frequency-hopping multiple-access (FH-MA) networks. The proposed scheme is a combination of noncoherent M-ary amplitude-shift keying (NMASK) and orthogonal frequency-division multiplexing (OFDM). Using this scheme will minimize the required data bandwidth. The number of frequency slots available to the users will increase significantly for a fixed spread-spectrum bandwidth (BWSS). The effect of the multiple-access interference will be reduced. Simple and accurate bit error rate expressions have been derived for FH-OFDM-MASK in additive white Gaussian noise channels and for FH-OFDM-ASK in Rayleigh fading channels.

Original languageBritish English
Pages (from-to)33-36
Number of pages4
JournalIEEE Transactions on Communications
Issue number1
StatePublished - Jan 2003


  • Amplitude-shift keying (ASK)
  • Frequency hoping (FH)
  • M-ary amplitude-shift keying (MASK)
  • Noncoherent
  • Orthogonal frequency-division multiplexing (OFDM)
  • Rayleigh channels


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