Author : M. Saranyadevi and R. Suresh M.E.

In this paper, propose a new Distributed Cooperation and Diversity Combining framework, focus is on heterogeneous networks with devices equipped with two types of radio frequency (RF) interfaces: short-range high-rate interface, and a long-range low-rate interface (e.g., cellular) communicating over urban Rayleigh fading channels. Within this framework, propose and evaluate a set of distributed cooperation techniques operating at different hierarchical levels with resource constraints such as short-range RF bandwidth propose a Priority Maximum-Ratio Combining (PMRC) technique, and a Post Soft-Demodulation Combining (PSDC) technique. The proposed techniques achieve significant improvements on Signal to Noise Ratio (SNR), Bit Error Rate (BER) and throughput through analysis, simulation, and experimentation on software radio test bed .results also indicate that, under several communication scenarios, PMRC, PSDC can improve the throughput performance by over an order of magnitude.

Keywords: Diversity, cooperation, hybrid wireless networks, PMRC, PSDC, BER

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.3 (June- 2014)