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作 者:陈爱戎[1]
机构地区:[1]浙江万里学院,浙江宁波315100
出 处:《计算机仿真》2008年第5期85-88,共4页Computer Simulation
摘 要:蓝牙设备经常是在室内应用,如办公室、居家、机场等平坦的二维环境。为了符合实际的应用场合,给出了适用于蓝牙室内传输的无线传播信道模型。从室内传输模型出发,根据通信的距离、噪声和发射功率,得出瞬时接收信噪比,并根据蓝牙射频GFSK调制特性求出瞬时位错误率。再根据蓝牙不同的数据分组类型求出ACL数据分组的平均丢包率和吞吐量以及SCO数据分组的位错误率。与实验测试结果进行了对比,比较结果显示了系统模型的有效性。研究工作对蓝牙在室内的通信性能有一定的借鉴意义。Bluetooth usually works indoors, such as offices, dwelling houses, airports and other fiat two - dimensional environments. For the sake of actual application occasions, the indoor wireless propagation channel model is presented. Through the given channel model, according to the communication distance, the noise and power of transmitted signal, the instantaneous Signal Noise Ratio (SNR) is found out. Based on the GFSK modulation character of Bluetooth, the average Bit Error Ratio (BER) is figured out. The average Packet Error Ratio(PER) and throughput of ACL data packets and BER of SCO data packets of different packet type are induced. The simulations are compared with actual experiments. The results prove that the model is effectual. The research work can be used as reference for the oerformance in Bluetooth indoor communications.
分 类 号:TN919.85[电子电信—通信与信息系统]
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