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    • 14. 发明授权
    • Radio telecommunications system operative by interactive determination of soft estimates, and a corresponding method
    • 无线电通信系统通过交互式确定软估计,并采用相应的方法
    • US07248647B2
    • 2007-07-24
    • US10643182
    • 2003-08-18
    • Holger ClaussenHamid Reza Karimi
    • Holger ClaussenHamid Reza Karimi
    • H04L27/20H04L27/28H03K9/10H04Q7/00H03C3/00
    • H04L1/005H03M13/25H03M13/29H03M13/2948H03M13/2957H03M13/31H03M13/3746H03M13/63H04L1/0059H04L1/0071H04L25/067H04L27/38H04L2001/0098
    • A system to communicate digital data symbols with higher than QPSK modulation comprises a transmitter and receiver. The transmitter comprises, a modulator and circuitry to split and encode the data into a first block of more significant bits and a second block of less significant bits for modulating by. The receiver receives digital data bits by iterative determination of soft estimates of bits followed by a hard decision as to what bit was intended, and comprises a first processor to provide first soft estimates of bits of the received signal, and a second processor to decode the first soft estimates and to provide second soft estimates of the bits. The receiver also comprises a first combiner to provide adapted first soft estimates to the second processor, the adapted first soft estimates of each bit being dependent upon the respective first soft estimate and a respective previous first soft estimate, and a second combiner to provide third soft estimates back to the first processor for subsequent further decoding, the third soft estimates of each bit being dependent upon the respective second soft estimate and a respective previous second soft estimate.
    • 用于传送高于QPSK调制的数字数据符号的系统包括发射机和接收机。 发射机包括调制器和电路,用于将数据分割并编码成更高有效位的第一块和用于调制的较低有效位的第二块。 接收机通过迭代确定比特的软估计接收数字数据比特,接着是关于比特是什么比特的硬判决,并且包括提供接收信号的比特的第一软估计的第一处理器,以及第二处理器, 第一个软估计,并提供第二个软估计的位。 接收机还包括第一组合器,用于向第二处理器提供适应的第一软估计,每个比特的适应的第一软估计依赖于相应的第一软估计和相应的先前第一软估计,以及第二组合器,以提供第三软 估计回到第一处理器用于随后的进一步解码,每个位的第三软估计取决于相应的第二软估计和相应的先前的第二软估计。