Achieving the Ergodic Capacity with Lattice Codes

被引：0

作者：

Hindy, Ahmed ^{[1
]}

Nosratinia, Aria ^{[1
]}

机构：

[1] Univ Texas Dallas, Dept Elect Engn, Richardson, TX 75083 USA

来源：

2015 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT) | 2015年

基金：

美国国家科学基金会;

关键词：

Ergodic capacity; nested lattice codes; multiple-access; minimum mean-square error (MMSE) estimation; INTERFERENCE; CHANNEL; SUM;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

The performance of lattice codes in the additive white Gaussian noise (AWGN) channel has attracted much attention lately, however, their performance under ergodic fading channels has been relatively unexplored. We show that lattice coding and decoding achieve the capacity of the ergodic point-to-point and multiple-access channels (MAC). Additionally, a low-complexity scheme is proposed for the ergodic MAC. At moderate and high signal-to-noise ratio (SNR), the sum rate achieved by the low-complexity scheme is within a constant gap to the ergodic MAC sum capacity, whereas at low SNR the gap to capacity diminishes quadratically with linear SNR decrease.

引用

页码：441 / 445

页数：5

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