Enhancing macrocell downlink performance through femtocell user cooperation

Authors:
Adem M. Zaid;Bechir Hamdaoui;Taieb Znati;Xiuzhen Cheng
Affiliations:
Oregon State University;Oregon State University;University of Pittsburgh;George Washington University
Venue:
WASA'11 Proceedings of the 6th international conference on Wireless algorithms, systems, and applications
Year:
2011

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Abstract

This paper studies cooperative techniques that rely on femtocell user diversity to improve the downlink communication quality of macrocell users. We analytically analyze and evaluate the achievable performance of these techniques in the downlink of Rayleigh fading channels. We provide an approximation of both the bit-error rate (BER) and the data throughput that macrocell users receive with and without femtocell user cooperation. Using simulations, we show that under reasonable SNR values, cooperative schemes improve both the BER and the data throughput of macrocell users significantly when compared with the traditional, non-cooperative scheme.