QOS Enhancement for OFDM System Using Queuing Theory and an Optimized Estimator
To the problem of bit and power allocation in Orthogonal Frequency Division Multiplexing (OFDM) system, a novel framework was proposed which introduced the Game theory and a new algorithm was applied. Firstly, the power allocation problem was described as non-cooperative Game process. Secondly, combined with influences of required Quality of Service (QoS). In this paper, the authors propose a novel SNR estimation algorithm with game theory for wireless OFDM systems based on the reuse of the synchronization preamble and efficient channel allocation based on its service and arrival rates. The periodic structure of the preamble is utilized for the computationally efficient SNR estimation algorithm, based on the second-order moments of received preamble samples.