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    • 7. 发明公开
    • Method of optical data transmission using polarization division multiplexing and QPSK
    • Verfahren zur optischenDatenübertragungunter Verwendung von Polarisationsmultiplexing and QPSK
    • EP2819327A1
    • 2014-12-31
    • EP13305924.6
    • 2013-06-28
    • ALCATEL LUCENT
    • Renaudier, JeremieBertran-Pardo, Oriol
    • H04B10/556
    • H04J14/06H04B10/5053H04B10/5561H04L5/04H04L7/0075H04L27/2071H04L27/2096
    • Proposed is a method of optical data transmission. The method comprises different steps. At least one stream of data bits is received. Sets of data bits are mapped onto successive logical states. The logical states correspond to respective sets of two initial QPSK symbols chosen according to a QPSK mapping and according to a set partitioning rule. The logical states are differentially encoded according to a differential encoding rule. For the differentially encoded logical states respective sets of two resulting QPSK symbols are derived according to the QPSK mapping and according to the set partitioning rule. The encoded sets of two QPSK symbols are transmitted using polarization division multiplexing. The differential encoding rule results in a differential encoding of one of the initial QPSK symbols but not the other of the initial QPSK symbols.
    • 提出了一种光数据传输的方法。 该方法包括不同的步骤。 接收至少一个数据位流。 数据位集合映射到连续的逻辑状态。 逻辑状态对应于根据QPSK映射选择的两个初始QPSK符号的组,并且根据设置的分区规则。 逻辑状态根据差分编码规则进行差分编码。 对于差分编码的逻辑状态,根据QPSK映射并根据设置的分区规则导出两个结果QPSK符号的各组。 使用偏振分割复用来发送两个QPSK符号的编码集合。 差分编码规则导致初始QPSK符号之一的差分编码,而不是初始QPSK符号中的另一个。