Hybrid Analog-Digital Transceiver Designs for Cognitive Radio Millimiter Wave Systems
English
Tsinos, Christos[University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Maleki, Sina[University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Chatzinotas, Symeon[University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Ottersten, Björn[University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
2016
Hybrid Analog-Digital Transceiver Designs for Cognitive Radio Millimiter Wave Systems
Yes
50th anniversary of the Asilomar Conference on Signals, Systems, and Computers Website
November 6-9th, 2016
[en] Millimeter wave (mmWave) ; Cognitive Radio ; Hybrid Pre-coding ; Alternating Direction Method of Multipliers (ADMM) ; Large-scale antenna arrays ; Multiple-Input Multiple-Output (MIMO)
[en] Recent advances in Milimeter wave (mmWave) band mobile communications may provide solutions to the increasing traffic demand in modern wireless systems. Even though mmWave bands are scarcely occupied, the design of a prospect transceiver should guarantee the efficient coexistence with the incumbent services in these bands. To that end, in this paper, two underlay cognitive transceiver designs are proposed based on a hybrid Analog/Digital transceiver architecture that enables the mmWave spectrum access while controlling the interference to the incumbent users with low hardware complexity and power consumption. The first cognitive solution designs a codebook free cognitive hybrid pre-coder by maximizing the mutual information between its two ends subject to interference, power and hardware constraints related to the analog counterpart. The second solution is codebook based and exhibits less complexity than the first one at the cost of inferior spectral efficiency. A novel codebook free solution for the post-coder at the cognitive receiver part is further proposed, based on a hardware constrained Minimum Mean Square Error criterion. Simulations study the performance of both the proposed hybrid approaches and compare it to the one of a fully digital solution for typical wireless environments.
Fonds National de la Recherche - FnR
Researchers ; Professionals ; Students ; General public ; Others