Sökning: "Lei Liu"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Lei Liu.

  1. 1. From Orthogonal to Non-orthogonal Multiple Access : Energy- and Spectrum-Efficient Resource Allocation

    Författare :Lei Lei; Di Yuan; Angelakis Angelakis; Erik Bergfeldt; Xiaoli Chu; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The rapid pace of innovations in information and communication technology (ICT) industry over the past decade has greatly improved people’s mobile communication experience. This, in turn, has escalated exponential growth in the number of connected mobile devices and data traffic volume in wireless networks. LÄS MER

  3. 2. Radio Resource Optimization for OFDM-based Broadband Cellular Systems

    Författare :Lei Lei; Di Yuan; Michael Reyer; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The rapid growth of users’ traffic demand in broadband wireless communication systems requires high-speed data transmission and intelligent resource allocation approaches. The Third Generation Partnership Project-Long Term Evolution (3GPPLTE) has standardized multiple access (MA) schemes for 4G cellular networks. LÄS MER

  4. 3. Understanding the Noise : Spliceosomal snRNA Profiling

    Författare :Lei Liu Conze; Anders Virtanen; Lars Wieslander; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ncRNA; snRNA; U1; splice site; alternative splicing; high-throughput sequencing; 454; SNP; Molekylär cellbiologi; Molecular Cellbiology;

    Sammanfattning : The concept of the gene has been constantly challenged by new discoveries in the life sciences. Recent challenging observations include the high frequency of alternative splicing events and the common transcription of non-protein-coding-RNAs (ncRNAs) from the genome. The latter has long been considered noise in biological systems. LÄS MER

  5. 4. Synthesis and Tuning of Multifunctional Materials at High Pressure

    Författare :Lei Liu; Peter Lazor; Roland Mathieu; Guoyin Shen; Viktor Struzhkin; Ronald Miletich-Pawliczek; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; double perovskite; multiferroic; bandgap engineering; high-entropy alloy; high pressure; Geovetenskap med inriktning mot mineralogi; petrologi och tektonik; Earth Science with specialization in Mineral Chemistry; Petrology and Tectonics;

    Sammanfattning : At the present stage, human society is developing at an unprecedented speed, facing an emergence of highly pressing challenges, e.g., information explosion, energy production problems, environmental pollution, climate problems. Functional materials with tailored properties are considered as holding a key to solving these problems. LÄS MER

  7. 5. Computationally Efficient and Adaptive Energy Management Strategies for Parallel Hybrid Electric Vehicles

    Författare :Tong Liu; Lei Feng; Hans Johansson; Nikolce Murgovski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hybrid Electric Vehicle; Energy Management Strategy; Computation Efficiency; Value Function; Adaptive Learning; Processor-in-the- Loop Simulation; Elhybridfordon; Energihanteringsstrategi; Beräkningseffektivitet; Värdefunktion; Adaptiv Inlärning; Processor-in-the-loop; Machine Design; Maskinkonstruktion; Optimeringslära och systemteori; Optimization and Systems Theory; Industriella informations- och styrsystem; Industrial Information and Control Systems;

    Sammanfattning : Hybrid electric vehicles (HEVs) are irreplaceable in attaining sustainable development in contemporary society. Owing to the extra degree of freedom in supplying traction power, HEVs resort to appropriate energy management strategies (EMSs) to present their superiority over conventional internal combustion engine vehicles and pure electric vehicles. LÄS MER