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

摘要

The crushing demand for wireless data services will soon exceed thecapability of the current homogeneous cellular architecture. An emergingsolution is to overlay small-cell networks with the macro-cell networks. Inthis paper, we propose an amplitude space sharing (ASS) method among themacro-cell user and small-cell users. By transmit layer design and data-rateoptimization, the signals and interferences are promised to be separable ateach receiver and the network sum-rate is maximized. The Han-Koboyashi codingis employed and optimal power allocation is derived for the one small-cellscenario, and a simple ASS transmission scheme is developed for the multiplesmall-cells scenarios. Simulation results show great superiority over otherinterference management schemes.