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首页> 外文期刊>IEEE Transactions on Information Theory >Gaussian Multiple Access via Compute-and-Forward
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Gaussian Multiple Access via Compute-and-Forward

机译：通过计算转发进行高斯多路访问

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摘要

Lattice codes used under the compute-and-forward paradigm suggest an alternative strategy for the standard Gaussian multiple-access channel (MAC): the receiver successively decodes the integer linear combinations of the messages until it can invert and recover all messages. In this paper, a multiple-access technique called compute-forward multiple access (CFMA) is proposed and analyzed. For the two-user MAC, it is shown that without time-sharing, the entire capacity region can be attained using CFMA with a single-user decoder as soon as the signal-to-noise ratios are above √1+ 2. A partial analysis is given for more than two users. Finally, the strategy is extended to the so-called dirty MAC, where two interfering signals are known non-causally to the two transmitters in a distributed fashion. Our scheme extends the previously known results and gives new achievable rate regions.
机译：在计算转发范式下使用的格码为标准高斯多路访问信道（MAC）提出了另一种策略：接收器连续解码消息的整数线性组合，直到可以反转并恢复所有消息为止。本文提出并分析了一种称为计算转发多路访问（CFMA）的多路访问技术。对于两用户MAC，表明无需分时共享，只要信噪比高于√1+ 2，就可以使用具有单用户解码器的CFMA来获得整个容量区域。针对两个以上的用户进行了分析。最终，该策略扩展到所谓的脏MAC，在这种情况下，两个发射机以分布式方式无因地知道了两个干扰信号。我们的方案扩展了先前已知的结果，并给出了新的可实现速率区域。

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