Scaling Laws for Hybrid Wireless Networks over Fading Channels: Outage Throughput Capacity and Performance Analysis

In this paper, we focus on the hybrid wireless network, in which a wired network of base stations is deployed to support long-range communications between wireless nodes. Two types of transmission mode in hybrid wireless network, the so called intra-cell transmission mode and the infrastructure transmission mode are considered. Then what is the throughput capacity of hybrid wireless network over fading channels and how the throughput capacity varies with different network setup? To study these open questions, we first define a feasible outage throughput capacity as the criterion for throughput performance analysis. Aiming to effectively overcome the fading impairments, we introduce an optimal multiple access technique allowing opportunistic sources to transmit concurrently with the scheduled source. A successive interference cancelation (SIC) strategy is then applied at the receiver to limit the intra-cell interference and achieve the maximum throughput. We derive closed-form analytical expressions for the outage throughput capacity and further explore the scaling laws for the outage throughput capacity under different transmission modes. Finally, we provide the detailed performance analysis in terms of the per-node average error probability (AEP). The theoretical bounds obtained are instrumental to the future network modeling and design.