Approaching the ergodic capacity with lattice coding
Approaching the ergodic capacity with lattice coding
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用格编码逼近遍历容量
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Aria Nosratinia
中科院分区：
文献类型：
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作者：
Ahmed Hindy;Aria Nosratinia
已知格型编码可以实现加性白色高斯噪声（AWGN）信道的容量。本文研究格码在各态历经衰落信道中的性能。使用嵌套格码和模糊度解码，我们表明，通过格编码和解码实现的速率是在中等和高信噪比（SNR）的遍历信道的容量的恒定间隙内，并在低SNR制度的SNR的平方下降的间隙内。
It is known that lattice coding can achieve the capacity of the additive white Gaussian noise (AWGN) channel. This paper addresses the performance of lattice codes in the ergodic fading channel. Using nested lattice codes and ambiguity decoding, we show that the rates achieved by lattice coding and decoding are within a constant gap of the capacity of the ergodic channel at moderate and high signal-to-noise-ratio (SNR), and within a gap that decreases quadratically with the SNR for the low SNR regime.