Sökning: "SIGNAL DETECTOR COGNITIVE RADIO"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden SIGNAL DETECTOR COGNITIVE RADIO.

  1. 1. Implementation and Analysis of Spectrum Sensing Algorithms for SIMO Links

    Master-uppsats, Kommunikationssystem; Tekniska högskolan

    Författare :Techin Eamrurksiri; [2013]
    Nyckelord :cognitive radio; USRP; OFDM; Spectrum sensing; GLRT; SDR;

    Sammanfattning : Cognitive radio is an autonomous transceiver that is continuously sensing theongoing communication in its environment, it then starts the communication whenever it is appropriate. Therefore, cognitive radio helps improving the spectrum utilization of the overall communication system. LÄS MER

  3. 2. Spectrum Sensing of acoustic OFDM signals

    Master-uppsats, Kommunikationssystem; Tekniska högskolan

    Författare :Sivakesava Reddy Malkireddy; [2012]
    Nyckelord :OFDM; Autocorrelation; Spectrum Sensing; Cognitive radio; GLRT;

    Sammanfattning : OFDM is a fast growing technology in the area of wireless communication due to its numerous advantages and applications. The current and future technologies in the area of wireless communications like WiMAX, WiFi, LTE, MBWA and DVB-T uses the OFDM signals. LÄS MER

  4. 3. Spectrum Sensing in Cognitive Radio Systems using Energy Detection :  

    Kandidat-uppsats, Avdelningen för elektronik, matematik och naturvetenskap

    Författare :YUHANG SUN; [2011]
    Nyckelord :Cognitive radio; spectrum sensing; energy detector;

    Sammanfattning : Cognitive radio is a low-cost communication system, which can choose the available frequencies and waveforms automatically on the premise of avoiding interfering the licensed users. The spectrum sensing is the key enabling technology in cognitive radio networks. LÄS MER

  5. 4. Analysis of OSTBC in Cooperative Cognitive Radio Networks using 2-hop DF Relaying Protocol

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Muhammad Mustafa Tahseen; MatiUllah Khan; Farhan Ullah; [2011]
    Nyckelord :Cognitive Radio; Cooperative Communication; Alamouti STBC; OSTBC; Rayleigh Fading; Energy Detector; DF Relay; Maximum Likelihood; MRC;

    Sammanfattning : To achieve cooperative diversity in cognitive radio network, Decode and Forward (DF) protocol is implemented at Cognitive Radios (CRs) using Orthogonal Space Time Block Coding (OSTBC). The 2-hop communication between source and destination is completed with the help of Cognitive Relays (CRs) using Multiple Input Multiple Output (MIMO) technology within the network. LÄS MER

  7. 5. Performance Analysis of Cyclostationary Sensing in Cognitive Radio Networks

    Magister-uppsats, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE)

    Författare :Asif Mirza; Faique Bin Arshad; [2011]
    Nyckelord :Cyclostationary Sensing in Cognitive Radio; BPSK QPSK Signal detection;

    Sammanfattning : Cognitive radio is one of the modern techniques for wireless communication systems to utilize the unused spread spectrum effectively. This novel paradigm makes wireless communication possible with less interference. In our work we have investigated one of the functions of cogni- tive radio called spectrum sensing. LÄS MER