Sökning: "3GPP-LTE"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet 3GPP-LTE.

  1. 1. HARQ Systems: Resource Allocation, Feedback Error Protection, and Bits-to-Symbol Mappings

    Författare :Chaitanya Tumula V. K.; Erik G. Larsson; Danyo Danev; Ana I. Pérez-Neira; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HARQ Systems; Resource Allocation; Geometric Programming; 3GPP-LTE; PUCCH Format 2; Complex-field coding; Signal Space Diversity; Optimization; Superposition Coding;

    Sammanfattning : Reliability of data transmission is a fundamental problem in wireless communications. Fading in wireless channels causes the signal strength to vary at the receiver and this results in loss of data packets. To improve the reliability, automatic repeat request (ARQ) schemes were introduced. LÄS MER

  3. 2. Improved Techniques for Retransmission and Relaying in Wireless Systems

    Författare :Chaitanya V. K. Tumula; Erik G. Larsson; Tobias J. Oechtering; Linköpings universitet; []
    Nyckelord :Hybrid-ARQ; relaying schemes; superposition coding; 3GPP- LTE; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The last three decades have seen significant advances in the wireless communication field. As the data rates of wireless systems are increasing, the demand for mobile services also is increasing rapidly. Like other natural resources, radio spectrum suitable for mobile wireless communications is also limited. LÄS MER

  4. 3. Device-to-Device Communication in Future Cellular Networks : Resource allocation and mode selection

    Författare :Demia Della Penda; Mikael Johansson; Ioannis Krikidis; KTH; []
    Nyckelord :Wireless communication; cellular networks; device to device; resource management; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The widespread use of smart devices and mobile applications is leading to a massive growth of wireless data traffic. Supporting the upcoming demands of data volume, communication rate, and system capacity requires reconsideration of the existing network architecture. LÄS MER

  5. 4. Resource management for network-assisted D2D communication

    Författare :Demia Della Penda; Mikael Johansson; Emil Björnson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : During the last decade, the widespread use of smart devices and mobile applications has led to a massive growth of the mobile traffic demand. Efficiency and scalability are therefore key criteria for the development of future cellular systems, in which device-to-device (D2D) communication is recognized as one of the promising technologies. LÄS MER

  7. 5. Scalable Multi-Standard Radio Baseband for Modern Wireless Communications

    Författare :Di Wu; Dake Liu; Bo Göransson; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Today, owing to the rapid advancement of technologies, people can cross the geographic gap and communicate without waiting for a week to receive a mail. Meanwhile, more and more wireless communications standards are emerging, as all claimed to make our life easier. LÄS MER