Performance analysis of an FH/SSMA network with adaptive antenna array and packet combining

Abstract

The packet throughput is analyzed for a slow FH/SSMA packet radio network with adaptive antenna array and packet combining in a Rayleigh fading channel with shadowing. The packet throughput is defined as the average number of captured packets per slot. To enhance the throughput performance, the adaptive antenna array and packet combining are employed. As a random access protocol, slotted ALOHA is considered, and synchronous memoryless hopping patterns are assumed. A packet consists of codewords from an (n,k) RS (Reed-Solomon) code. The tap weights of an adaptive processor is updated by the RLS (recursive-least-square) algorithm. From the simulation results, it is shown that the packet throughput is significantly improved by employing adaptive antenna array and packet combining.