Essays about: "Selection Combining SC"

Found 4 essays containing the words Selection Combining SC.

  1. 1. Performance Analysis of a MIMO Cognitive Cooperative Radio Network with Multiple AF Relays

    University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Author : Advaita Advaita; Mani Meghala Gali; [2016]
    Keywords : Cognitive radio; Cooperative communications; Space time coding; MIMO systems; Outage probability;

    Abstract : With the rapid growth of wireless communications, the demand for the various multimedia services is increasing day by day leading to a deficit in the frequency spectrum resources. To overcome this problem, the concept of cognitive radio technology has been proposed which allows the unlicensed secondary user (SU) to access the licensed spectrum of the primary user (PU), thus improving the spectrum utilization. READ MORE

  3. 2. Performance Analysis of Diversity Techniques for Wireless Communication System

    University essay from Blekinge Tekniska Högskola/Sektionen för datavetenskap och kommunikation

    Author : MD. JAHERUL ISLAM; [2012]
    Keywords : Maximal-Ratio Combining MRC ; Equal-Gain Combining EGD ; Selection Combining SC ; Carrier to Noise Ratio CNR ; Carrier to Interference Ratio CIR ; Diversity Techniques; Path Loss; Channel Propagation.;

    Abstract : Different diversity techniques such as Maximal-Ratio Combining (MRC), Equal-Gain Combining (EGC) and Selection Combining (SC) are described and analyzed. Two branches (N=2) diversity systems that are used for pre-detection combining have been investigated and computed. READ MORE

  4. 3. APPLYING DISTRIBUTED ORTHOGONAL SPACE TIME BLOCK CODING IN COOPERATIVE COMMUNICATION NETWORKS

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : James Adu Ansere; Odion Ehimiaghe; [2012]
    Keywords : Decode and Forward; BER; DOSTBC; Cooperative communications;

    Abstract : In this research, we investigate cooperative spectrum sensing using distributed orthogonal space time block coding (DOSTBC). Multiple antennas are introduced at the transmitter and the receiver to achieve higher cooperative diversity in the cooperative wireless (CW) networks. READ MORE

  5. 4. Applying OSTBC in Cooperative Cognitive Radio Networks

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Hamid Shahzad; Jaishankar Botchu; [2010]
    Keywords : Cognitive Radio; Cooperative Communication; OSTBC; Rayleigh Fading; Alamouti STBC; AF Relay; MRC; Energy Detector ;

    Abstract : In this report, we introduce cooperative spectrum sensing using orthogonal space time block coding (OSTBC) in order to achieve cooperative diversity in the cognitive radios (CRs) network. Transmit diversity or gain is achieved by introducing more than one antenna on the transmitter and receiver side, but in small electronic mobile devices it looks impractical. READ MORE