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Layered Steered Space-Time Codes Using Iterative Detection

机译:分层导引空时码使用迭代检测

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摘要

This paper presents a novel multifunctional multiple-input multiple-output (MIMO) scheme that combines the benefits of the Vertical Bell Labs Layered Space-Time (VBLAST) scheme, of Space-Time Codes (STC) as well as of beamforming. Further system performance improvements can be attained by serially concatenated convolutional encoding combined with a unity-rate code (URC) referred to as a precoder. Then, at the receiver side, iterative decoding is invoked by exchanging extrinsic information between the precoder’s decoder as well as the outer Recursive Systematic Convolutional (RSC) code’s decoder. Moreover, the convergence behaviour of the proposed system is evaluated with the aid of Extrinsic Information Transfer (EXIT) charts. Finally, we quantify the maximum achievable rate of the system based on EXIT charts and demonstrate that the iterative-detection-aided system is capable of operating within 1 dB from the maximum achievable rate.
机译:本文提出了一种新颖的多功能多输入多输出(MIMO)方案,该方案结合了垂直贝尔实验室分层时空(VBLAST)方案,时空码(STC)和波束成形的优点。通过将串行级联卷积编码与称为预编码器的统一码(URC)相结合,可以进一步提高系统性能。然后,在接收器端,通过在预编码器的解码器与外部递归系统卷积(RSC)代码的解码器之间交换外部信息来调用迭代解码。此外,借助外部信息传输(EXIT)图评估了所提出系统的收敛行为。最后,我们根据EXIT图表对系统的最大可实现速率进行量化,并证明了迭代检测辅助系统能够在最大可实现速率的1 dB之内运行。

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  • 年度 2007
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  • 正文语种 {"code":"en","name":"English","id":9}
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