Sökning: "Svante Signell"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Svante Signell.

  1. 1. TDMA for Low Sampling Rate IR-UWB Receivers

    Författare :Muhammad Adeel Ansari; Svante Signell; Ramir Eghbali; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER;

    Sammanfattning : In UWB communication sampling plays a key role in detection of the transmitted data. There are various methods of data transmission and detection at the receiver. Mostly, the detection methods are based on frequency domain methods. LÄS MER

  2. 2. Pulse Shape Adaptation and Channel Estimation in Generalised Frequency Division Multiplexing Systems

    Författare :Jinfeng Du; Svante Signell; Ben Slimane; Arne Svenssons; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; OFDM; GFDM; OQAM; pulse shaping; adaptation; channel estimation; Electronics; Elektronik;

    Sammanfattning : Orthogonal Frequency Division Multiplexing (OFDM) is well known as an efficient technology for wireless communications and is widely used in many of the current and upcoming wireless and wireline communication standards. However, it has some intrinsic drawbacks, e.g. LÄS MER

  3. 3. Adaptation in multiple input multiple output systems with channel state information at transmitter

    Författare :Jinliang Huang; Svante Signell; Anders Ahlén; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MIMO; adaptive modulation; power allocation; spectral efficiency; CSI; Electrical engineering; Elektroteknik;

    Sammanfattning : This thesis comprises two parts: the first part presents channel-adaptive techniques to achieve high spectral efficiency in a single user multiple-input multiple-output (MIMO) system; the second part exhibits a programmable and reconfigurable software-defined-radio orkbench(SDR-WB) in the Matlab/Octave environment that accommodates a variety of wireless applications. In an attempt to achieve high spectral efficiency, an adaptive modulation technique is applied at the transmitter to vary the data rate depending on the channel state information (CSI). LÄS MER

  4. 4. Adaptive MIMO Systems with Channel State Information at Transmitter

    Författare :Jinliang Huang; Svante Signell; Øien Geir; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adaptive modulation; adaptive power allocation; average spectral efficiency; MIMO; BER.; Telecommunication; Telekommunikation;

    Sammanfattning :  This dissertation presents adaptation techniques that can achieve high spectral efficiency for single user multiple-input multiple-output (MIMO) systems. Two types of adaptation techniques, adaptive modulation and adaptive powe allocation, are employed to adapt the rate and the transmit power to fading channels. LÄS MER

  5. 5. Design and Analysis of Charge-Pump Bases Frequency Synthsizers

    Författare :Tord Johnson; Svante Signell; Mälardalens högskola; []
    Nyckelord :Datavetenskap;

    Sammanfattning : Most telecommunication systems employ modulation techniques that require the transceiver to be capable of accurately estimating the phase of the transmission signal. The frequency synthesizer is a key element and extensively utilized to synthesize frequencies for such radio-frequency communication systems. LÄS MER