Sökning: "optimal codes"
Visar resultat 1 - 5 av 55 avhandlingar innehållade orden optimal codes.
1. Sparse Codes on Graphs with Convolutional Code Constraints
Sammanfattning : 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. LÄS MER
2. Classification and nonexistence results for binary linear codes
Sammanfattning : .... LÄS MER
3. Designing Space-Time Codes Using Orthogonal Designs
Sammanfattning : This thesis deals with coding schemes for systems with multiple transmit antennas. The problem of finding optimal transmission schemes for the case when the transmitter knows the channel and the case when the transmitter does not know the channel are considered. LÄS MER
4. Analysis and Design of Spatially-Coupled Codes with Application to Fiber-Optical Communications
Sammanfattning : The theme of this thesis is the analysis and design of error-correcting codes that are suitable for high-speed fiber-optical communication systems. In particular, we consider two code classes. The codes in the first class are protograph-based low-density parity-check (LDPC) codes which are decoded using iterative soft-decision decoding. LÄS MER
5. Efficient Coding Techniques for Networks & Channels with Transmission Errors
Sammanfattning : 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. LÄS MER