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Visar resultat 1 - 5 av 101 avhandlingar som matchar ovanstående sökkriterier.

1. 1. High Datarate Solutions for Next Generation Wireless Communication

   Författare :Zhongxia Simon He; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Modem; HBT; Harmonic Generation; Injection Locking; Differential Encoder; 16-QAM; E-band; mHEMT; Mobile Backhaul; D-QPSK; Point-to-point Radio; 8-PSK; Carrier Recovery; High Definition Video Transmission; MMIC; Wireless Data Center; QPSK; FPGA; OOK;

   Sammanfattning : Next generation wireless communication systems are essential components in order to increase the capacity of existing digital networks. Channel bandwidth as wide as several gigahertz is generally available at millimeter wave frequencies. LÄS MER

3. 2. 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

4. 3. 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

5. 4. Multi-Gigabaud Solutions for Millimeter-wave Communication

   Författare :Sining An; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Millimeter-wave communication; power amplifier; mobile network; power combining; outphasing; high order modulation; DQPSK; modem; pilot; 16-QAM; non-linear distortion; E-band; high data rate; carrier recovery;

   Sammanfattning : With the growing number of mobile network and internet services subscriptions, faster communication will provide a better experience for users. In the next generation mobile network, the fifth generation (5G), communication data rate will achieve several Gigabits per second with ultra-low latency. LÄS MER

7. 5. 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