Sökning: "Backhaul"

Visar resultat 11 - 15 av 52 avhandlingar innehållade ordet Backhaul.

1. 11. Transport Solutions for Future Broadband Access Networks

   Författare :Mozhgan Mahloo; Lena Wosinska; Martin Maier; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optical access network; mobile backhaul; techno-economic; reliability; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : “Connected society” where everything and everyone are connected at any time and on any location brings new challenges for the network operators. This leads to the need of upgrading the transport networks as the segment of Internet infrastructure connecting the fixed users and mobile base stations to the core/aggregation in order to provide high sustainable bandwidth, as well as supporting a massive number of connected devices. LÄS MER

3. 12. Multi-Gigabit Radio System Demonstrators for Next Generation Mobile Networks

   Författare :Jingjing Chen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fronthaul; E-band; modem; millimeter-wave transmission; mobile backhaul; multi-gigabit; differential coding; phase noise mitigation; FPGA; 16-QAM; DQPSK; point-to-point radio; centralized baseband;

   Sammanfattning : Driven by the exponential growth in mobile broadband subscriptions and mobile data traffic, transport capacity of mobile networks has to be enhanced accordingly, including wireless backhaul and the emerging fronthaul networks. Utilizing wide bandwidth is the most straightforward way to capacity upgrade. LÄS MER

4. 13. Millimeter-Wave High-Gain Antenna for 5G Backhauling with Auto-beam-tracking Function

   Författare :Enlin Wang; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gap waveguide; auto-beam-tracking; 5G backhaul; Ultra-high-gain antenna; me- chanical movement;

   Sammanfattning : As microwave links are increasingly deployed within the millimeter-wave frequency range, E-band (70/80 GHz) links have been installed on a global scale. One major technological challenge in this high-frequency spectrum is the significant increase in path loss between receivers and transmitters. LÄS MER

5. 14. Hardware Solutions for High Data Rate Modems

   Författare :Zhongxia Simon He; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mHEMT; HBT; OOK; Modem; Mobile Backhaul; D-QPSK; MMIC;

   Sammanfattning : The exponentially-growing mobile data traffic imposes significant demands on the capacity of the mobile network. Fiber optic and microwave links are two main solutions for the mobile backhaul network, which provides connectivity between radio base station (RBS) sites and the switch sites. LÄS MER

7. 15. Multi-Gigabaud Millimeter-Wave Communication - Challenges and Solutions

   Författare :Jingjing Chen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase noise; high-order modulation; 5G; multi-gigabaud; PAM-4; high data rate; white noise; multi-gigabit; phase noise mitigation; 64-QAM; mobile backhaul; VCSEL driver; Frequency multiplier; modem; high frequency oscillator; multiplicative noise; power detector; fronthaul; millimeter-wave communication;

   Sammanfattning : A major challenge in future mobile networks is to overcome the capacity barrier in wireless communication. Utilizing large bandwidth at higher frequencies is key to enabling capacity upgrade for next generation mobile networks (5G). LÄS MER