Title :
Performance of asynchronous slow frequency-hop multiple-access networks with MFSK modulation
Author :
Choi, Kwonhue ; Cheun, Kyungwhoon
Author_Institution :
Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea
fDate :
2/1/2000 12:00:00 AM
Abstract :
The performance of asynchronous slow frequency-hop spread-spectrum multiple-access networks where each user transmits L, M-ary symbols per hop using M-ary frequency-shift keying (FSK) modulation with noncoherent demodulation is investigated. Expressions for the decision variables are derived for a given multiple FSK (MFSK) symbol within a hop hit by K´ interfering users under additive white Gaussian noise and Rayleigh fading channel models. For the special case when M=2, an accurate analytic approximation for the average error probability is derived as a function of L and K´ and semianalytic Monte Carlo simulations are performed to estimate the probability of error for M larger than 2. The results are used to investigate the dependence of the average symbol error probability on L and M. Finally, the effect of enforcing phase transition between the MFSK symbols within a hop is investigated
Keywords :
AWGN channels; Monte Carlo methods; Rayleigh channels; demodulation; error statistics; frequency shift keying; multi-access systems; multiuser channels; radio networks; spread spectrum communication; M-ary frequency-shift keying; MFSK modulation; Rayleigh fading channel; accurate analytic approximation; additive white Gaussian noise channel; asynchronous slow frequency-hop multiple-access networks; average error probability; average symbol error probability; channel models; decision variables; hop hit; multiple FSK symbol; noncoherent demodulation; performance; phase transition; semianalytic Monte Carlo simulations; slow FH-SSMA networks; Additive white noise; Demodulation; Error probability; Fading; Frequency division multiaccess; Frequency modulation; Frequency shift keying; Multiple access interference; Performance analysis; Spread spectrum communication;
Journal_Title :
Communications, IEEE Transactions on
