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    • 62. 发明授权
    • Method and receiving unit for the detection of data symbols
    • 用于检测数据符号的方法和接收单元
    • US08526540B2
    • 2013-09-03
    • US13495697
    • 2012-06-13
    • Frank PoegelEric SachseMichael Schmidt
    • Frank PoegelEric SachseMichael Schmidt
    • H04L27/00
    • H04B1/707
    • A method and device is provided for detecting data symbols in a received radio signal. Each data symbol is allocated transmit-side a symbol value-specific PN sequence of successive PN chips in the chip clock, and the allocated PN sequences are offset QPSK modulated. The method for incoherent detection includes converting the received radio signal into a complex baseband signal sampled in the chip clock, generating a demodulated signal by differential demodulation of the complex baseband signal, calculating correlation results by correlating the demodulated signal with the derived sequences, and deriving the values of the data symbols by evaluating the correlation results. Each derived sequence is assigned to a PN sequence allocable transmit-side and includes derived chips, whose values correspond to a logic linking of particular PN chips of the PN sequence allocable transmit-side that is assigned the derived sequence. The invention relates furthermore to a corresponding receiving unit.
    • 提供了一种用于检测接收到的无线电信号中的数据符号的方法和装置。 每个数据符号在芯片时钟中被分配给发送侧的连续PN码元的符号值专用PN序列,并且所分配的PN序列被偏移QPSK调制。 非相干检测方法包括将接收到的无线电信号转换成在芯片时钟采样的复基带信号,通过复基带信号的差分解调产生解调信号,通过将解调信号与导出序列相关来计算相关结果, 通过评估相关结果的数据符号的值。 每个导出的序列被分配给PN序列可分发发射侧,并且包括导出的码片,其值对应于分配了导出序列的PN序列可分发端侧的特定PN码片的逻辑链路。 本发明还涉及相应的接收单元。