An Intra-Cell Frequency Reuse Plan for Triangular Cell Communication System

Triangular cell communication system (TCCS) is a novel distributed system, which allows a capacity improvement in addition to coverage improvements. This paper proposes a frequency reuse plan for TCCS. This scheme divides the whole spectrum into two parts, and each is used by the uni-covered region (UCR) and the cross-covered region (CCR) of TCCS respectively. The frequency reuse scheme is adopted in UCR, while macro-diversity strategy is used in CCR. Then the ergodic capacity of TCCS based on this frequency reuse plan in multi-cell environment is investigated. Per-antenna maximum transmit power constraint is presumed in power allocation. The simulation results show that by adopting this frequency reuse plan, TCCS offers large capacity gains over traditional distributed antenna system.