Sökning: "Alamouti STBC"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Alamouti STBC.

  1. 1. Space Time Coding For Wireless Communication

    Master-uppsats, Linnéuniversitetet/Institutionen för datavetenskap, fysik och matematik, DFM; Linnéuniversitetet/Institutionen för datavetenskap, fysik och matematik, DFM

    Författare :Om Nath Acharya; Sabin Upadhyaya; [2012]
    Nyckelord :MIMO; STC; STBC; STTC; Space Time Code; Space Time Block Codes; Space Time Trellis Codes; Alamouti Codes; Information theory; MIMO Capacity; Diversity;

    Sammanfattning : As the demand of high data rate is increasing, a lot of research is being conducted in the field of wireless communication. A well-known channel coding technique called Space-Time Coding has been implemented in the wireless Communication systems using multiple antennas to ensure the high speed communication as well as reliability by exploiting limited spectrum and maintaining the power. LÄS MER

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

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap; Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

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

    Sammanfattning : 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. LÄS MER

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

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap; Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap; 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

  4. 4. Implementation of MIMO-OFDM System for WiMAX

    Master-uppsats, Linnéuniversitetet/Institutionen för datavetenskap, fysik och matematik, DFM; Linnéuniversitetet/Institutionen för datavetenskap, fysik och matematik, DFM; Linnéuniversitetet/Institutionen för datavetenskap, fysik och matematik, DFM

    Författare :Muhammad Atif Gulzar; Rashid Nawaz; Devendra Thapa; [2011]
    Nyckelord :MIMO; OFDM; WiMAX;

    Sammanfattning : Error free transmission is one of the main aims in wireless communications. With the increase in multimedia applications, large amount of data is being transmitted over wireless communications. This requires error free transmission more than ever and to achieve error free transmission multiple antennas can be implemented on both stations i.e. LÄS MER

  5. 5. Applying OSTBC in Cooperative Cognitive Radio Networks

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap; Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

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

    Sammanfattning : 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. LÄS MER