蓝牙EDR异步数据分组传输性能的研究  

Research on Transmission Performance of Bluetooth EDR ACL Packets

作　　者：杨帆[1] 王珂[1] 钱志鸿[1] 

机构地区：[1]吉林大学通信工程学院,长春130022

出　　处：《计算机工程》2006年第16期14-16,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(40374045);吉林省2003年科技发展计划基金资助项目(20030313)

摘　　要：分析了蓝牙EDR规范定义的GFSK、π/4-DQPSK与8DPSK调制方式在加性高斯白噪声信道下的位错误率与平均接收信噪比的关系,推导了新增异步数据分组的重传概率与平均接收信噪比的函数表达式。通过分组重传概率与分组的不同特性分析了不同信噪比情况下各类型数据分组的传输性能,包括平均吞吐量、平均重传次数、平均传输时延等。该文是对蓝牙EDR规范新增调制方式与新增分组传输性能进行的研究,其分析结果可以作为其他研究的理论参考。Relations between bit error rate and average received signal-to-noise ratio（SNR） in AWGN channel are derived for GFSK, π/4-DQPSK and 8DPSK modulation modes defined by Bluetooth EDR specification. The function expressions of packet retransmission probability and average received SNR of new ACL data packets are put forward. The transmission performance, including average throughput, average retransmission times and average transmission delay, of all data packets in different SNRs are investigated through the packet retransmission probability and different characteristics of packets. It＇s the first time to research the newly adopted modulations and packet transmission performances of Bluetooth EDR specification, the analysis results contained can be sever as a theoretic benchmark against other researches.

关 键 词：蓝牙 EDR 调制 信噪比 分组错误率 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]