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首页> 外国专利> METHOD FOR OBTAINING RECEIPT SYNCHRONIZATION IN A NEAR FIELD COMMUNICATION SYSTEM AND A DEVICE THEREOF CAPABLE OF EFFICIENTLY OBTAINING SYNCHRONIZATION IN THE NEAR FIELD COMMUNICATION BASED ON OFDM ACCORDING TO A PREDETERMINED FRAME STRUCTURE

METHOD FOR OBTAINING RECEIPT SYNCHRONIZATION IN A NEAR FIELD COMMUNICATION SYSTEM AND A DEVICE THEREOF CAPABLE OF EFFICIENTLY OBTAINING SYNCHRONIZATION IN THE NEAR FIELD COMMUNICATION BASED ON OFDM ACCORDING TO A PREDETERMINED FRAME STRUCTURE

机译：在近场通信系统中获得接收同步的方法及一种基于预定帧结构的基于OFDM的在近场通信中有效获得同步的装置

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PURPOSE: A method for obtaining receipt synchronization in a near field communication system and a device thereof are provided to efficiently and easily obtain synchronization from a receiving signal formed with a frame structure including an STF(Short Training Field) having a repeated pattern.;CONSTITUTION: A receiving device(11) includes a packet detecting unit(13), a gain control unit(14), first processing units(15,16), second processing units(17,18), and a timing synchronizing unit(19). The packet detecting unit detects a packet from a receiving signal based on a plurality of STF patterns. A gain control unit measures power based on the STF patterns and controls an amplification gain of the receiving signal based on the measured power. The first processing units perform frequency error estimation to the STF patterns of the receiving signal to obtain a phase error of each sample unit composing the STF patterns. The first processing units perform first frequency error estimation and compensation for correcting a frequency of the STF patterns based on the obtained phase error. The second processing units perform frequency error estimation to the STF patterns outputted after the first frequency error estimation and compensation to obtain a phase error of each sample unit composing the STF patterns. The second processing units correct the frequency of the STF patterns based on the obtained phase error. The timing synchronizing unit detect a frame timing by performing cross correlation to a predetermined number of STF patterns among the STF patterns outputted after the second frequency error estimation and compensation.;COPYRIGHT KIPO 2013;[Reference numerals] (11) Receiving device; (12) Sampling unit; (13) Packet detecting unit; (14) Gain control unit; (15) First frequency error estimating unit; (16) First error correcting unit; (17) Second frequency error estimating unit; (18) Second error correcting unit; (19) Timing synchronizing unit; (20) Frame boundary detecting unit
机译：目的：提供一种用于在近场通信系统中获得收据同步的方法及其装置，以从形成具有包括具有重复模式的STF（短训练场）的帧结构的接收信号中高效且容易地获得同步。 ：接收设备（11）包括分组检测单元（13），增益控制单元（14），第一处理单元（15,16），第二处理单元（17,18）和定时同步单元（19） 。分组检测单元基于多个STF模式从接收信号中检测分组。增益控制单元基于STF图案来测量功率，并且基于所测量的功率来控制接收信号的放大增益。第一处理单元对接收信号的STF图案执行频率误差估计，以获得构成STF图案的每个采样单元的相位误差。第一处理单元执行第一频率误差估计和补偿，以基于所获得的相位误差来校正STF图案的频率。第二处理单元对在第一频率误差估计和补偿之后输出的STF图案执行频率误差估计，以获得构成STF图案的每个采样单元的相位误差。第二处理单元基于所获得的相位误差来校正STF图案的频率。时序同步单元通过对在第二频率误差估计和补偿之后输出的STF图案中的预定数量的STF图案执行互相关来检测帧时序。COPYRIGHTKIPO 2013; [附图标记]（11）接收装置; （十二）抽样单位; （13）分组检测单元; （14）增益控制单元; （15）第一频率误差估计单元; （16）第一纠错单元; （17）第二频率误差估计单元; （18）第二纠错单元; （19）定时同步单元; （20）帧边界检测单元

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