会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Initialization of and modem for an OFDM data transmission
    • OFDM数据传输的初始化和调制解调器
    • US08416864B2
    • 2013-04-09
    • US12493753
    • 2009-06-29
    • Dmitri KorobkovPatrick LangfeldVladimir PotapovChristian LeebHans-Joerg MaagHans BenningerStefan Ramseier
    • Dmitri KorobkovPatrick LangfeldVladimir PotapovChristian LeebHans-Joerg MaagHans BenningerStefan Ramseier
    • H04K1/10H04L27/28
    • H04L1/0007H04L27/2605H04L27/2607
    • A method and modem are provided for obtaining an optimized efficiency of an Orthogonal Frequency Division Multiplex (OFDM) data transmission, such as for power line communication, for example. The length or duration of a guard interval or cyclic prefix in an OFDM symbol is newly selected at each start-up of a modem while initializing or preparing the OFDM data transmission. The length of the guard interval can be given by the number of samples in a time-discrete representation, and the value of such number of samples that is retained for the subsequent data transmission can be selected from a plurality of pre-determined possibilities based on an evaluation of a channel quality of a communication channel including a physical line to which the modem is connected. Hence, the selected value depends on actual transmission conditions, and the optimization potential offered by a more flexible handling of system parameters is exploited to meet changing conditions on the physical line.
    • 提供了一种用于获得例如用于电力线通信的正交频分复用(OFDM)数据传输的优化效率的方法和调制解调器。 在初始化或准备OFDM数据传输时,在调制解调器的每次启动时新选择OFDM符号中的保护间隔或循环前缀的长度或持续时间。 保护间隔的长度可以由时间 - 离散表示中的样本数量给出,并且保留用于后续数据传输的样本数量的值可以从基于以下的多个预定可能性中选择: 包括调制解调器连接到的物理线路的通信信道的信道质量的评估。 因此,所选择的值取决于实际的传输条件,并且利用更灵活的系统参数处理提供的优化潜力来满足物理线路上的变化条件。