THROUGHPUT ANALYSIS OF A SLOTTED FREQUENCY-HOP MULTIPLE-ACCESS NETWORK

A link throughput analysis is presented for a slotted frequency-hop multiple-access (FHMA) packet radio network (PRN) operating in the presence of background noise, partial-band noise jamming and partial-band tone jamming. The PRN consists of an arbitrary number of transceivers arranged in a paired-off topology. Forward error-correction coding is used for packet protection. M-ary FSK modulation is used with hard-decision decoding. Expressions are derived for the link throughput in terms of the channel cutoff rate and capacity. With the friendly objective of maximizing the link throughput, and the enemy objective of minimizing the link throughput, the dependency of the optimal processing gain, code rate, and jamming fraction on the population size, traffic intensity, bit energy-to-background-noise ratio, and bit energy-to-jammer-noise ratio is examined in detail. It is shown that a properly designed (optimized) PRN using random-access FHMA offers a significantly larger heavy-load throughput than a random-access frequency division multiple-access PRN. © 1990 IEEE