Search for dissertations about: "Puncturing"

Showing result 6 - 9 of 9 swedish dissertations containing the word Puncturing.

  2. 6. Channel Coding and Multiuser Detection for CDMA and Wireless Communications

    Author : Pål Orten; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rate compatible punctured convolutional RCPC codes; optimum distance spectrum ODS ; low-rate convolutional codes; interference cancellation; code-division multiple-access CDMA ; sequential decoding; automatic repeat request ARQ ; multiuser detection; maximum free distance MFD ; nested convolutional codes; tailbiting; rate matching;

    Abstract : Next generation wireless communication systems will require support for many different applications as well as improved quality compared to existing second generation systems like GSM (Global System for Mobile communications). Since there will be more users and higher data rates, the capacity must also be increased. READ MORE

  4. 7. Bleeding and hemostasis during normo- and hypothermia : studies on porcine and rat models

    Author : Göran Heinius; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: Numerous animal studies have shown protective effects of hypothermia (HT) on hemorrhagic shock. These findings do not correlate with clinical findings, were studies on trauma registers have shown that HT is an independent factor of death when associated with trauma. READ MORE

  5. 8. Acupuncture for labour pain

    Author : Linda Vixner; Lena Mårtensson; Erica Schytt; Elisabet Stener-Victorin; Ulla Waldenström; Mats Hammar; Högskolan Dalarna; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; acupuncture; labour pain; randomised controlled trial; Hälsa och välfärd; Health and Welfare;

    Abstract : Background: Acupuncture involves puncturing the skin with thin sterile needles at defined acupuncture points. Previous studies are inconclusive regarding the effect of acupuncture on labour pain, but some studies have found a reduction in the use of pharmacological pain relief when acupuncture is administered. READ MORE

  6. 9. Sparse Codes on Graphs with Convolutional Code Constraints

    Author : Muhammad Umar Farooq; Kommunikationsteknologi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Braided codes; Density evolution; Serially concatenated codes; Spatially coupled codes; Generalized LDPC codes; threshold saturation; Turbo codes;

    Abstract : Modern coding theory is based on the foundation of the sparse codes on graphs, such as the low-density parity-check (LDPC) codes, and the turbo-like codes (TCs) with component convolutional codes. The success of the LDPC codes and the TCs lies in their ability to perform low-complexity iterative message passing decoding procedures. READ MORE