<FONT face=Verdana>A transmission scheme based on channel coding was proposed for multiple-input multiple-output orthogonal frequency-division multiplexing system concatenating space-time block code with beamforming. Firstly

the constellation distance which guaranteed user’s QoS was derived utilizing the statistical channel state information from the perspective of coding gain. Secondly

it was proved that this optimization problem was convex programming problem and the closed form solution for optimal power and bit loading was deduced according to Karush-Kuhn-Tucher conditions. Finally

an adaptive non-iterative resource allocation algorithm was put forward. The simulation results demonstrate that the algorithm is close to the theoretical value of the system throughput and has very low computational complexity which can meet the requirement of real-time communication. The lower the code rate of LDPC is

the higher the system throughput becomes.