Amplitude Space Sharing among the Macro-Cell and Small-Cell Users

TL;DR

This paper introduces an amplitude space sharing method to improve interference management and maximize sum-rate in macro-cell and small-cell networks, employing advanced coding and power allocation strategies.

Contribution

It proposes a novel amplitude space sharing approach with optimized transmit design and coding, enhancing network capacity over existing interference management techniques.

Findings

Significant sum-rate improvements demonstrated through simulations.

Effective interference separation achieved via transmit layer design.

Optimal power allocation enhances performance in small-cell scenarios.

Abstract

The crushing demand for wireless data services will soon exceed the capability of the current homogeneous cellular architecture. An emerging solution is to overlay small-cell networks with the macro-cell networks. In this paper, we propose an amplitude space sharing (ASS) method among the macro-cell user and small-cell users. By transmit layer design and data-rate optimization, the signals and interferences are promised to be separable at each receiver and the network sum-rate is maximized. The Han-Koboyashi coding is employed and optimal power allocation is derived for the one small-cell scenario, and a simple ASS transmission scheme is developed for the multiple small-cells scenarios. Simulation results show great superiority over other interference management schemes.