Graduate School and Research Center in Digital Sciences

Joint sensing and reception design of SIMO hybrid cognitive radio systems

Filippou, Miltiades C; Ropokis, George A; Gesbert, David; Ratnarajah, Tharmalingam

IEEE Transactions on Wireless Communications, Vol. 15, N°9, September 2016 / Also on ArXiv

In this paper, the problem of joint design of Spectrum Sensing (SS) and receive beamforming (BF), with reference to a Cognitive Radio (CR) system, is considered. The aim of the proposed design is the maximization of the achievable average uplink rate of a Secondary User (SU), subject to an outage-based Quality-of-Service (QoS) constraint for primary communication. A hybrid CR system approach is studied, according to which, the system either operates as an interweave (i.e., opportunistic) or as an underlay (i.e., spectrum sharing) CR system, based on SS results. A realistic Channel State Information (CSI) framework is assumed, according to which, the direct channel links are known by the multiple antenna receivers (RXs), while, merely statistical (covariance) information is available for the interference links. A new, closed form approximation is derived for the outage probability of primary communication, and the problem of rate-optimal selection of SS parameters and receive beamformers is addressed for hybrid, interweave and underlay CR systems. It is proven that our proposed system design outperforms both underlay and interweave CR systems for a range of system scenarios. 

Doi Arxiv Bibtex

Title:Joint sensing and reception design of SIMO hybrid cognitive radio systems
Keywords:Cognitive radio, hybrid, spectrum sensing, beamforming
Department:Communication systems
Eurecom ref:4750
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Bibtex: @article{EURECOM+4750, doi = {}, year = {2016}, month = {09}, title = {{J}oint sensing and reception design of {SIMO} hybrid cognitive radio systems}, author = {{F}ilippou, {M}iltiades {C} and {R}opokis, {G}eorge {A} and {G}esbert, {D}avid and {R}atnarajah, {T}harmalingam}, journal = {{IEEE} {T}ransactions on {W}ireless {C}ommunications, {V}ol. 15, {N}°9, {S}eptember 2016 / {A}lso on {A}r{X}iv}, url = {} }
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