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本文提出了具有组合的窗口接入和线群输出结构的输入缓冲ＡＴＭ交换网络并对其性能进行了研究．通过概率生成函数方法得到了计算该交换网络最大吞吐率，平均信元时延和信元丢失率的封闭表达式，并通过计算机模拟实验验证了理论分析的精确性．研究结果表明，在随机均匀业务下，当窗口尺寸和输出群尺寸分别为４和１６时，最大吞吐率可达到９９％．
In this paper, an input buffer ATM switching network with a combined window access and group output structure is proposed and its performance is studied. The closed-form expression for calculating the maximum throughput, the average cell delay and the cell loss rate of the switched network is obtained by the method of probability generation function. The accuracy of the theoretical analysis is verified by computer simulation. The results show that under the random uniform service, the maximum throughput rate can reach 99% when the window size and output group size are 4 and 16, respectively.