Title :
Degradation in FH-MFSK mobile radio system capacity due to Rayleigh fading and log-normal shadowing
Author :
Muammar, Rushdi H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
fDate :
8/1/1988 12:00:00 AM
Abstract :
A frequency-hopped multilevel frequency-shift-keying (FH-MFSK) system has been proposed for digital mobile radio communications. The performance of the system is evaluated by studying average probability of error caused by transmission impairments. The degradation in performance due to Rayleigh fading and log-normal shadowing environments is determined. With perfect transmission, where the degradation in the system performance is due to mutual interference between users only, the system can accommodate up to 209 simultaneous users at an average bit error rate of 10-3. The system capacity decreases to 110 users as a result of additive white Gaussian noise (AWGN), mutual interference, frequency-selective Rayleigh fading, and log-normal shadowing with normalized area mean of 20 dB and standard deviation of 6 dB
Keywords :
digital radio systems; fading; frequency shift keying; interference (signal); mobile radio systems; spread spectrum communication; FH-MFSK; Rayleigh fading; additive white Gaussian noise; average probability of error; bit error rate; capacity degradation; digital mobile radio communications; frequency-hopped multilevel frequency-shift-keying; log-normal shadowing; mutual interference; spectrum efficiency; spread spectrum communication; transmission impairments; AWGN; Bit error rate; Degradation; Frequency; Interference; Land mobile radio; Mobile communication; Rayleigh channels; Shadow mapping; System performance;
Journal_Title :
Vehicular Technology, IEEE Transactions on
