Title :
FEC coding for RH/MFSK multiple-access spread spectrum systems
Author :
Fiebig, Uwe-Carsten
Author_Institution :
Inst. for Commun. Technol., Wessling, Germany
Abstract :
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 Eb/N0 as a function of the number of active system users is calculated
Keywords :
encoding; error correction codes; frequency agility; frequency shift keying; multi-access systems; spread spectrum communication; FEC codes; FEC coding; FH/MFSK; active system users; capacity; concatenated coding; cut-off-rate; dual-k codes; forward error control; frequency-hopping multiple frequency shift keying; interference; multiple-access systems; outer RS codes; repetition coding; spread spectrum systems; system parameters; AWGN; Bit error rate; Communications technology; Detectors; Forward error correction; Frequency conversion; Frequency shift keying; Frequency synchronization; Spread spectrum communication; Viterbi algorithm;
Conference_Titel :
Telecommunications Symposium, 1990. ITS '90 Symposium Record., SBT/IEEE International
Conference_Location :
Rio de Janeiro
DOI :
10.1109/ITS.1990.175611
