Essays about: "zf"

Showing result 6 - 10 of 15 essays containing the word zf.

  1. 6. A Study of Lattice Reduction Detection Techniques for LTE Systems

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Liping Wang; [2016]
    Keywords : LTE; MIMO; Lattice Reduction; MMSE; ZF; ML; Kronecker Model; Rayleigh Fading Channel; Technology and Engineering;

    Abstract : MIMO (Multiple Transmit and Multiple Receive) antenna techniques are widely used in the most recent wireless communication standards. For example, LTE (Long-Term Evolution), WiMAX (Worldwide Interoperability for Microwave Ac- cess) and IEEE 802.11n have recently been rolled out across the world. READ MORE

  3. 7. Full Duplex Multiuser MIMO with Massive Arrays

    University essay from Institutionen för systemteknik; Tekniska högskolan

    Author : Hussain Wannas; [2014]
    Keywords : Full-Duplex; Massive MIMO; MIMO; MU-MIMO;

    Abstract : Half-Duplex Multiuser Multiple-Input Multiple-Output (HD MU-MIMO) systemscurrently employed in communication systems are not experiencing the selfinterference(SI) problem but they are not optimal in terms of efficiency and interms of resources used (time and frequency resources). Ignoring the effect of largescalefading, we start by explaining the uplink (UL) and downlink (DL) parts ofthe MU-MIMO system and how the sum-rate is calculated. READ MORE

  4. 8. Usability Requirements and Deduced General Design Concepts for Mobile Solutions in Production Contexts at ZF

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Simon Harhues; [2014]
    Keywords : ;

    Abstract : The thesis project collected usability requirements and formulated design principles for mobile solutions in an industrial production context. A second aim of the present thesis was to evaluate the applicability of the contextual design (CD) methodology in such a context. READ MORE

  5. 9. Optimized Training Signal Design

    University essay from KTH/Signalbehandling

    Author : Marie Maros; [2014]
    Keywords : ;

    Abstract : In this thesis, the problem of finding an optimal training sequence for estimating a MIMO flat fading channel with spatially and temporally correlated Gaussian noise is considered. The methods analyzed tailor the training sequence not only according to the known statistical CSI but also to the specific purpose the channel estimate will fulfill. READ MORE

  6. 10. Reduction of Undesired Range Shifting in an Agricultural Continuously Variable Transmission

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Henrik Knutsson; Michael Pettersson; [2013]
    Keywords : dSpace MicroAutoBox II; ECCOM gearbox; CVT; continuously variable transmission; gear hunting; gear alternation; range shifting; CANape; CANalyzer; droop limit; ZF Friedrichshafen AG; driveline; powertrain; VDC; ECU; TCU; vehicle CAN-buses; Simulink.; Technology and Engineering;

    Abstract : The subject of this thesis was to investigate the possibility of a supplemental control algorithm to suppress gear alternation in the ZF ECCOM gearbox series. The acquired solutions were implemented on a dSpace MicroAutoBox II and connected to a Claas Xerion 5000 to evaluate their effect. READ MORE