Abstract:

To effectively utilize resource and ensure usersQoS（Quality of Service） demand at the same time, cooperative game theory method is employed to resource allocation algorithm of cooperative MB-OFDM (Multiband Orthogonal Frequency Division Multiplexing) UWB（Ultra-WideBand） systems. Applying NBS（Nash Bargaining Solution) method and convex optimization theory the relay partner selection algorithm and adaptive power allocation algorithm are proposed. The proposed algorithms are given to maximize the payoffs of system and to ensure QoS demand (the minimum date rates)of the users, which is the scale index of fairness. Simulation results show that the proposed algorithms can provide a good tradeoff between the overall system rate and the fairness comparing with the other two resource allocation algorithms, i.e. the maximizing system rate and the maxmin farness algorithm.

Key words: cooperative game theory, ultrawideband（UWB）, nash bargaining solution（NBS）, partner selection, adaptive