Sökning: "target SIR"

Hittade 3 uppsatser innehållade orden target SIR.

  1. 1. Hybrid Power Control in Time Division Scheduling Wideband Code Division Multiplex Access

    Master-uppsats, KTH/Kommunikationssystem, CoS

    Författare :Zhuo Cheng; [2011]
    Nyckelord :WCDMA; High-Speed Uplink Packet Access; Power Control; unused code GRAKE;

    Sammanfattning : With high date rates using Enhanced Uplink (EUL), a conventional signal to interference ratio (SIR) based power control algorithm may lead to a power rush due to self interference or incompatible SIR target [2]. Time division (TD) scheduling in Wideband Code Division Multiplex Access (WCDMA) is considered to be a key feature in achieving high user data rates. LÄS MER

  3. 2. RFI Suppression in Low Frequency UWB SAR Using the RLS Algorithm

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Khan Fazal Ullah; [2010]
    Nyckelord :Aperture; Adaptive Line Enhancement ALE ; Chirp signal; Global BackProjection GBP ; Pulse compression; Radio Frequency Interference RFI ; Synthetic Aperture Radar SAR ; UltraWide Band UWB ;

    Sammanfattning : Synthetic Aperture Radar (SAR) has many applications within ground image sensing and navigation. UltraWide Band(UWB) SAR operating at Ultra High Frequency /Very High Frequency(UHF/VHF) are usually a ffected by the Radio Frequency Interferences(RFI) from civilian communication bands which causes SIR(Signal to Interference Ratio) to go down. LÄS MER

  4. 3. Fuzzy Modeling of Uplink Transmit Power Control in a CDMA Network

    Master-uppsats, Blekinge Tekniska Högskola/Avdelningen för signalbehandling

    Författare :Victor Uzoechi; Kenneth Osigwe; [2008]
    Nyckelord :cellular; channel; co-channel interference; code division multiple access; distributed power control; fast fading; fixed step power control; fuzzy aggregation; fuzzy connectives; fuzzy control; fuzzy operation; fuzzy set; linguistic variable; mobile; multipath; pathloss; power control; proportional-plus-integral control; radio resource management; reuse distance; reverse link; signal-to-interference ratio; slow fading; spread spectrum; target SIR; transmit power control;

    Sammanfattning : From its beginning, transmit power has always placed a significant constraint on the performance of wireless radio systems. The transmit power control problem can be characterized as that of maintaining adequate power in each transmitted waveform so as to increase the expectation that the minimum required SIR at the receiver will at least be reached. LÄS MER