【摘要】 蓝牙是一种短距离无线通信技术,可以传输实时与非实时业务。针对这两类业务,蓝牙协议规范中开发了两种基带数据传输方式,分别是SCO和ACL链路。由于SCO链路是一种实时性很强的通信方式,所以只采用了FEC差错控制方式。该文在定量分析现有的SCO链路FEC机制基础上,针对突发干扰的特点,分析了FEC在抗击突发干扰方面的弱点。同时,见解ARQ机制的特点,探讨了包级冗余在SCO链路抗突发干扰方面的优势。通过相应的理论分析和仿真,证明了包级冗余方式比现有的FEC机制更能提高SCO链路的健壮性。更多还原

【Abstract】 Bluetooth is a wireless standard about short range,real _t ime or not real_time service can be transmitted by bluetooth,SCO and ACL lin ks are developed for these service.Because SCO link of bluetooth is used for re al time service s,FEC is only used for error correction.On the base of analyz ing quantificationally FEC error correction,it is analyzed that the weakness of FEC which resists burst interference in this paper.At the same time ,it is discussed that the advantage of packet redundancy which resists burst interferen ce for SCO link.It is testified that packet redundancy is more robust than FEC for SCO link by theory analysis and simulation.更多还原