Sökning: "CSI feedback"
Visar resultat 1 - 5 av 19 avhandlingar innehållade orden CSI feedback.
1. Data Transmission in the Presence of Limited Channel State Information Feedback
Sammanfattning : .... LÄS MER
2. Ultra-Reliable Short-Packet Communications: Fundamental Limits and Enabling Technologies
Sammanfattning : The paradigm shift from 4G to 5G communications, anticipated to enable ultra-reliable low-latency communications (URLLC), will enforce a radical change in the design of wireless communication systems. Unlike in 4G systems, where the main objective is to provide a large transmission rate, in URLLC, as implied by its name, the objective is to enable transmissions with low latency and, simultaneously, very high reliability. LÄS MER
3. Adaptive Modulation and Coding in Wireless Communications with Feedback
Sammanfattning : We study link adaptation techniques which are suitable for the future packet-based wireless communication systems, where in particular, flat Rayleigh fading channels are assumed. Firstly, an adaptive coding scheme based on Rate Compatible Convolutional (RCC) codes is proposed. LÄS MER
4. Data transmission in the presence of channel state information feedback
Sammanfattning : Novel communication techniques such as adaptive resource allocation are useful tools to increase the transmission efficiency and reliability of wireless networks. The main idea behind these techniques is to adapt some transmissionparameters, such as the transmission rate and power, based on the instantaneous channel quality. LÄS MER
5. Transceiver Design for Multiple Antenna Communication Systems with Imperfect Channel State Information
Sammanfattning : Wireless communication links with multiple antennas at both the transmitter and the receiver sides, so-called multiple-input-multiple-output (MIMO)systems, are attracting much interest since they can significantly increase the capacity of band-limited wireless channels to meet the requirements of the future high data rate wireless communications. The treatment of channel state information (CSI) is critical in the design of MIMO systems. LÄS MER