Distributed Cooperation and Diversity for Hybrid Wireless Networks

In this paper, we propose a new Distributed Cooperation and Diversity Combining framework. Our focus is heterogeneous networks with devices equipped with two types of radio frequency (RF) links: short-range high-rate interface (e.g., IEEE802.11), and a long-range lowrate interface (e.g., cellular) communicating in fading channels. Within this framework, we propose and evaluate a set of distributed cooperation techniques operating at different hierarchical levels with resource constraints such as short-range RF bandwidth. We propose a Priority Maximum-Ratio Combining (PMRC) for pre-demodulation combining, a post soft-demodulation combining, and a decode-and-forward technique. We show that the proposed techniques achieve significant improvements on Signal to Noise Ratio (SNR), Bit Error Rate (BER) and throughput through analysis, simulation, and experimentation on our platform prototype. Our results also indicate that, under several communication scenarios we are considering, PMRC can ...

• Type: Conference
• Year: 2010
• Where: WWIC
• Authors: Hooman Javaheri, Guevara Noubir, Y. Wang
• Keywords: Communications, Distributed Cooperation, Diversity Combining Framework, Short-range Rf Bandwidth, WWIC 2010