Sökning: "wireless mobile communications"
Visar resultat 11 - 15 av 86 avhandlingar innehållade orden wireless mobile communications.
11. Signal Processing Techniques in Mobile Communication Systems : Signal Separation, Channel Estimation and Equalization
Sammanfattning : Over the last decade there has been an explosive growth in the use of wireless mobile communications. Second generations systems are mature technologies now and third generation systems and beyond are being implemented and researched. LÄS MER
12. Wireline Communications in a Wireless World
Sammanfattning : The whole society is digitalizing, filled with streaming services, cloud computing and an ambition of ubiquitous connectivity. To address the data demand, ultra-fast broadband, at the speeds of 1Gbps and more, is developed and deployed. Optical fibers have been long viewed as a future-proof carrier for the ultra-fast broadband. LÄS MER
13. Mobility and Multi-channel Communications in Low-power Wireless Networks
Sammanfattning : The prospect of replacing existing fixed networks with cheap, flexible and evenmobile low-power wireless network has been a strong research driver in recent years.However, many challenges still exist: reliability is hampered by unstable and burstycommunication links; the wireless medium is getting congested by an increasingnumber of wireless devices; and life-times are limited due to difficulties in developingefficient duty-cycling mechanisms. LÄS MER
14. Novel Applications of Space-Time Processing for Wireless Systems
Sammanfattning : Space-time processing techniques have emerged as one of the most promising areas of research and development in wireless communications. Space-time processing signifies the signal processing performed on a system consisting of several antenna elements, whose signals are processed adaptively in order to exploit both the spatial (space) and temporal (time) dimensions of the radio channel. LÄS MER
15. A Statistical-Physics Approach to the Analysisof Wireless Communication Systems
Sammanfattning : Multiple antennas at each side of the communication channel seem to be vital for future wireless communication systems. Multi-antenna communication provides throughput gains roughly proportional to the smallest number of antennas at the communicating terminals. LÄS MER