R&SCBTandR&SCBT32Bluetooth基础原理与测试JackyChen1R&SCBTandR&SCBT32BluetoothPrinciple02/2009Bluetooth历史Bluetooth取自中世纪北欧丹麦维京国王:HaraldBlaatand“Bluetooth”II(940-981),统一当时的丹麦和挪威。人们将取代“线缆”的短距离无线传输技术命名为“Bluetooth”,表明对该技术的期望:像Harald一样将周围设备统一起来。1998年2月,Ericsson、Nokia、IBM、Toshiba、Intel五大巨头提出成立蓝牙特别兴趣小组(SIG);1999年12月,SIG促进者成员扩展加入Microsoft、Lucent、3Com、Motorola。Jackychen2R&SCBTandR&SCBT32BluetoothPrinciple06/2007Bluetooth基本参数RF基本参数频率:2.4频率:2.4GHzGHz(ISM(ISMband)band)信道:79信道:79(or(or23)23)RFRFchannelschannels频点间隔:频点间隔:11MHzMHz功率:0dBm功率:0dBmNominalNominalPowerPowerPeakPeakTXTXpowerpower????2024dBmdBm调制方式:、、G-FSK3/4-DQPSK调制方式:、、G-FSK3/4-DQPSKApplicationsTCP/IPHIDRFCOMMDataL2CAPTDDTDDFrequencyFrequencyhoppinghopping16001600hops/s(625hops/s(625ususintervals)intervals)、、12Mbps3Mbps、、1MbbpMbbp2Mbps3MbpsAudioLinkManagerBasebandRFJackychen3R&SCBTandR&SCBT32BluetoothPrinciple06/2007Control2400-2Jackychen2402024681012141618202424262830323436384042444624052410SpainFranceISM频带分配ISM频带分配Japan(optional)Europe/NA/JapanBluetooth频率424152420242524302435244079channels244524502449信道号k4850R&SCBTandR&SCBT32BluetoothPrincipleFrequency[MHz]2455246024652470247524802480248524902495245452545658606264666823channels23channels06/200724712473247670727476788082848688909223channels249594Bluetooth基础Bluetooth地址??蓝牙设备地址:BD_ADDR??48bits??对Bluetooth设备是唯一的??成员激活状态地址:AM_ADDR??3bits??识别微微网中的从设备??成员暂停状态地址:PM_ADDR??8bits??区分处于暂停状态下各从设备Jackychen5R&SCBTandR&SCBT32BluetoothPrinciple06/2007
好文档 - 专业文书写作范文服务资料分享网站