Search for dissertations about: "adaptive coding"

Showing result 1 - 5 of 58 swedish dissertations containing the words adaptive coding.

2. 1. Efficient Coding Techniques for Networks & Channels with Transmission Errors

   Author : Ming Xiao; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Channels with Errors; Low-Density Generation-Matrix Codes; Sink Bit Error Probability; Continuous Phase Modulation; Maximum-Likelihood Decoding; Cross-Layer Design; Network Coding; Ring Convolutional Codes; Adaptive Codes.; Deterministic Rateless Codes;

   Abstract : This thesis consists of two parts, both of whichinvestigate coding techniques for information transmission throughchannels in the presence of errors. Part I discusses topics ofnetwork coding and rateless codes. Part~II considers channel codesfor continuous phase modulation. These two parts are clearlydifferent, but they are also related. READ MORE

4. 2. Adaptive MIMO Systems with Channel State Information at Transmitter

   Author : Jinliang Huang; Svante Signell; Øien Geir; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adaptive modulation; adaptive power allocation; average spectral efficiency; MIMO; BER.; Telecommunication; Telekommunikation;

   Abstract :  This dissertation presents adaptation techniques that can achieve high spectral efficiency for single user multiple-input multiple-output (MIMO) systems. Two types of adaptation techniques, adaptive modulation and adaptive powe allocation, are employed to adapt the rate and the transmit power to fading channels. READ MORE

5. 3. Adaptive Concatenated Coding for Wireless Real-Time Communications

   Author : Elisabeth Uhlemann; Högskolan i Halmstad; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Incremental redundancy hybrid ARQ; Multiple concatenated codes; Iterative decoding; Rate compatible punctured codes; Union bounds; EXIT charts; Convergence analysis; Wireless real-time communication; Quality of service; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : The objective of this thesis is to improve the performance of real-time communication overa wireless channel, by means of specifically tailored channel coding. The deadlinedependent coding (DDC) communication protocol presented here lets the timeliness and thereliability of the delivered information constitute quality of service (QoS) parametersrequested by the application. READ MORE

6. 4. Adaptive Modulation and Coding in Wireless Communications with Feedback

   Author : Sorour Falahati; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : We study link adaptation techniques which are suitable for the future packet-based wireless communication systems, where in particular, flat Rayleigh fading channels are assumed. Firstly, an adaptive coding scheme based on Rate Compatible Convolutional (RCC) codes is proposed. READ MORE

7. 5. Filter Bank Design for Subband Adaptive Filtering

   Author : Jan Mark de Haan; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal Processing; Filter Bank Design; Subband Adaptive Filtering;

   Abstract : Adaptive filtering is an important subject in the field of signal processing and has numerous applications in fields such as speech processing and communications. Examples in speech processing include speech enhancement, echo- and interference- cancellation, and speech coding. READ MORE