FEC Coding for FH/MFSK Multiple-Access Spread-Spectrum Systems.
Uwe‐Carsten Fiebig · elib (German Aerospace Center) · 1990
Forward error control (FEC) coding for Frequency-Hopping / Multiple Frequency Shift Keying (FH/MFSK) multiple-access systems is analyzed taking into account synchronous as well as asynchronous other-user interference. . For both cases capacity and cut-off-rate are investigated and exact expressions for the basic system parameters are derived. Various types of FEC codes are considered. Systems employing repetition coding (diversity) or dual-k codes are examined as well as concatenated coding schemes with various outer RS codes. For the most promising codes the required &,/No as a function of the number of active system users is calculated.