PERFORMANCE OF AUTONOMOUS DYNAMIC CHANNEL ASSIGNMENT AND POWER-CONTROL FOR TDMA FDMA WIRELESS ACCESS

We combine autonomous algorithms for dynamic channel assignment (DCA) and power control in a TDMA/FDMA wireless system as a medium access co ntrol (MAC) protocol. The DCA algorithm determines paired radio channe ls that experience the least interference and are least likely to caus e interference. The power control algorithm uses local estimations of signal to interference ratio (SIR) at a receiver to iteratively comman d power adjustment on the desired transmitter.A common control frequen cy, which is frame-synchronized among base stations, provides all nece ssary information for DCA without blind slots. Computer simulations ar e used to evaluate system performance. Results from computer simulatio ns demonstrate good spectrum efficiency and robustness. Although studi ed under a specific set of parameters, this type of MAC protocol can b e applied in different wireless communications environments.