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.
@article{arxiv.1210.2146,
title = {Amplitude Space Sharing among the Macro-Cell and Small-Cell Users},
author = {Yafei Tian and Songtao Lu and Chenyang Yang},
journal= {arXiv preprint arXiv:1210.2146},
year = {2012}
}
Comments
6 pages, 5 figures, submitted to IEEE Int. Conf. on Communications (ICC) 2013