Sökning: "Zero forcing"
Visar resultat 6 - 10 av 23 avhandlingar innehållade orden Zero forcing.
6. On the choice of initial state in numerical weather prediction models
Sammanfattning : This thesis deals with the problem of initializing numerical weather prediction models based on the primitive equation system. The normal mode approach is used i.e. the variables are projected on the eigensolutions of the linearized model equations. LÄS MER
7. On the Performance of Dynamic TDD in Ultra-Dense Wireless Access Networks
Sammanfattning : The appetite for wireless high-data rate services is expected to continue for many years to come and drive the need for more capacity. Ultra-dense networks (UDNs) represent a paradigm shift where each base station (BS) serves only a few user equipments (UEs). LÄS MER
8. Channel Shortening in Wireless Communication
Sammanfattning : The concept of Channel Shortening (CS) is a well-known technique that has a rich history over 40 years. CS transfers linear vector channels such as multi-input multi-output (MIMO) and intersymbol interference (ISI) channels into ``shortened'' versions, for the purpose of reducing demodulation-complexity and improving data-transmission performance. LÄS MER
9. Differential-algebraic equations and matrix-valued singular perturbation
Sammanfattning : With the arrival of modern component-based modeling tools for dynamic systems, the differential-algebraic equation form is increasing in popularity as it is general enough to handle the resulting models. However, if uncertainty is allowed in the equations — no matter how small — this thesis stresses that such equations generally become ill-posed. LÄS MER
10. Coordinated MultiPoint Transmission with Incomplete Information
Sammanfattning : The demand for higher data rates and efficient use of various resources has been an unquenchable thirst across different generations of cellular systems, and it continues to be so. Aggressive reuse of frequency resources in cellular systems gives rise to intercell interference which severely affects the data rate of users at the cell-edge. LÄS MER