2—Sector interference channel communication for sum rates and minimum rate maximization

M. Charafeddine, A. Paulraj
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引用次数: 13

Abstract

This paper applies recent advances in communicating over the interference channel while treating the interference as noise. Two maximization utilities are considered: maximizing the sum rates and maximizing the minimum rate. The channel model is based on a 2—sector interference channel within a single cell. The utilities maximization is presented from the perspective of the interference channel's achievable rates region. Maximizing the minimum rate parts from the traditional problem formulation of casting it as a pure power control problem. Instead, the problem is presented as maximization over the convex hull of the rates region, therefore employing both power control and time-sharing strategies. For maximizing the minimum rate, it is shown that optimal communication over a 2—sector channel is not homogenous, and an interplay of different time-sharing types and/or power control is required to achieve optimality. Systems results are presented together with the gains achieved by using the proposed techniques over the traditional paradigms used in communicating over the 2—sector channel. Finally, insights and the contextualization of the aforementioned techniques within an information theoretic perspective are discussed.
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用于和速率和最小速率最大化的2扇区干扰信道通信
本文应用了干扰信道通信的最新进展,同时将干扰视为噪声。考虑了两种最大化效用:最大化总费率和最大化最小费率。通道模型基于单个单元内的2扇区干扰通道。从干扰信道可达速率区域的角度提出了效用最大化问题。将零件最小倍率最大化问题从传统的铸造问题表述为一个纯功率控制问题。相反,该问题呈现为速率区域凸壳上的最大化,因此同时采用功率控制和分时策略。为了最大化最小速率,结果表明,在2扇区信道上的最佳通信不是同质的,并且需要不同分时类型和/或功率控制的相互作用来实现最优性。系统结果与使用所提出的技术在2扇区信道通信中使用的传统范式所获得的收益一起呈现。最后,从信息论的角度讨论了上述技术的见解和语境化。
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