arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1301.5535cs.ITmath.IT
收藏

状态相关高斯干扰信道的可扩展速率域

On the Achievable Rate-Regions for State-Dependent Gaussian Interference Channel

Shahab Ghasemi-Goojani, Hamid Behroozi

摘要:

在本文中,我们研究了一个一般的加性状态相关高斯干扰信道(ASD-GIC),我们认为两个用户干扰信道的两个独立的状态已知的非因果关系在两个发射机,但未知的任何接收机。文[1]、[2]中研究了两条链路上的加性状态相同的特殊情况,其中表明,对于强干扰情况,可实现的对称速率与上界之间的差距小于1/4比特。在这里,我们还考虑了每个信道状态具有无界方差的情况[3],这被称为强干扰。我们首先得到一个容量区域的外边界。通过利用基于格的编码方案,我们得到四个可实现的速率区域。根据噪声方差和信道功率约束,可达到的速率区域可以与信道容量区域一致。对于对称模型,对于大于1的信噪比(SNR),可实现的和速率达到信道容量的0.661比特内。

英文摘要:

In this paper, we study a general additive state-dependent Gaussian interference channel (ASD-GIC) where we consider two-user interference channel with two independent states known non-causally at both transmitters, but unknown to either of the receivers. An special case, where the additive states over the two links are the same is studied in [1], [2], in which it is shown that the gap between the achievable symmetric rate and the upper bound is less than 1/4 bit for the strong interference case. Here, we also consider the case where each channel state has unbounded variance [3], which is referred to as the strong interferences. We first obtain an outer bound on the capacity region. By utilizing lattice-based coding schemes, we obtain four achievable rate regions. Depend on noise variance and channel power constraint, achievable rate regions can coincide with the channel capacity region. For the symmetric model, the achievable sum-rate reaches to within 0.661 bit of the channel capacity for signal to noise ratio (SNR) greater than one.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑