Search for dissertations about: "I. Coding"

Showing result 1 - 5 of 488 swedish dissertations containing the words I. Coding.

2. 1. Source-Channel Coding in Networks

   Author : Niklas Wernersson; Mikael Skoglund; Geoffrey Chan; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source coding; channel coding; joint source-channel coding; bandwidth expansion; distributed source coding; multiple description coding; soft decoding; Telecommunication; Telekommunikation;

   Abstract : The aim of source coding is to represent information as accurately as possible using as few bits as possible and in order to do so redundancy from the source needs to be removed. The aim of channel coding is in some sense the contrary, namely to introduce redundancy that can be exploited to protect the information when being transmitted over a nonideal channel. READ MORE

4. 2. On distributed coding for relay channels

   Author : Zhongwei Si; Mikael Skoglund; Ragnar Thobaben; Alexandre Graell i Amat; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

   Abstract : Cooperative transmission is considered to be a key-technique for increasing the robustness, the efficiency, or the coverage of wireless communication networks. The basic concept is that the information transmission from a sender to a receiver can be aided by one or several relay nodes in a cooperative manner under constraints on power, complexity or delay. READ MORE

5. 3. HARQ Systems: Resource Allocation, Feedback Error Protection, and Bits-to-Symbol Mappings

   Author : Chaitanya Tumula V. K.; Erik G. Larsson; Danyo Danev; Ana I. Pérez-Neira; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HARQ Systems; Resource Allocation; Geometric Programming; 3GPP-LTE; PUCCH Format 2; Complex-field coding; Signal Space Diversity; Optimization; Superposition Coding;

   Abstract : Reliability of data transmission is a fundamental problem in wireless communications. Fading in wireless channels causes the signal strength to vary at the receiver and this results in loss of data packets. To improve the reliability, automatic repeat request (ARQ) schemes were introduced. READ MORE

6. 4. Epstein-Barr virus gene methylation and variation in latency

   Author : Kerstin I Falk; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Epstein-Barr virus is a human herpesvirus and approximately 95 % of the adults carry the virus in a latent form. EBV has been implicated in the pathogenesis of human malignancies such as Burkitt's lymphoma and nasopharyngeal carcinoma. DNA methylation is one of the mechanisms that is involved in control of gene expression in viruses. READ MORE

7. 5. Small non-coding RNAs in cancer

   Author : Helena Persson; Bröstcancer-genetik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; microRNA; non-coding RNA; breast cancer; CYP3A4; bladder cancer;

   Abstract : The complex genetics of cancer, which allows tumours to grow and spread while bypassing the control circuitry of the cell, involves dysregulation of the genome, transcriptome and proteome. The importance of protein-coding genes such as growth factors and hormone receptors is well established. READ MORE