A new congestion control algorithm of code division multiple access (CDMA) is developed to re-duce the cost of system. Firstly, the paper defines the utility function of resource throughout, and then set upthe mathematics model according to the wireless resource characteristic. In the approach only the non-linearcompensating term, solution of a sequence of adjoint vector differential equations, is required iteration. Bytaking the finite iteration of non-linear compensating term of optimal solution sequence, a suboptimal conges-tion control algorithm of CDMA can be obtained. It is proved by analysis in theory and system level simula-tion that the congestion control algorithm can enlarge system throughput while controlling system load.
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