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Rate constrained power control in space-time coded fading ad-hoc networks

Under aggregate data rate and loss constraints, we study the problem of power control for fading wireless ad-hoc networks accommodating space-time coded mobile nodes. Our study relies on modeling the underlying wireless channel with finite-state Markov chains and using Reed-Solomon channel coders to compensate for the temporally correlated loss observed in such networks. Our study shows that utilizing space-time coding techniques can reduce power consumption of ad-hoc networks under the given constraints. Further, we investigate the tradeoff between practicality and optimality by means of introducing centralized and decentralized power control schemes. We quantify the tradeoff by comparing different schemes together.