Sökning: "turbo codes"
Visar resultat 1 - 5 av 13 uppsatser innehållade orden turbo codes.
1. Faster than Nyquist Signaling with Spatial Coupling
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : The emergence of the Faster-Than-Nyquist signaling (FTN) technology has im- proved the tight spectrum resources by compressing the transmission interval between adjacent pulses. In a natural environment, data transmission via a wire- less medium and through multi-path, at a high data rate, the leakage of these paths among symbols can cause severe inter-symbol interference (ISI). LÄS MER
2. Spatially Coupled Codes in Turbo Equalization
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : In this thesis we investigate the application of spatial coupling in turbo equalization. We show that with spatial coupling we can have a fresh perspective on the trade-off between performance in the waterfall and error floor region often encountered in the choice of codes for turbo equalization. LÄS MER
3. Implementation of 3GPP LTE QPP Interleaver for SiLago
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Modern wireless communication systems have seen an increased usage of various channel coding techniques to facilitate improved throughput and latency. Interleavers form an integral part of these coding techniques and play a critical role by making the communication more robust and resilient to noise and other interference. LÄS MER
4. Comparison of various concatenated convolutional code ensembles under spatial coupling
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : A big challenge faced by the digital communication world today is increasing the reliability of information which is being transmitted. During the transmission of information, there is a possibility that the information is corrupted or distorted. LÄS MER
5. Evaluation of flexible SPA based LPDC decoder using hardware friendly approximation methods
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : Due to computation-intensive nature of LDPC decoders, a lot of research is going towards efficient implementation of their original algorithm (SPA). As "Min-Sum" approximation is basically an overestimation of SPA, this thesis investigates more accurate, yet area efficient, approximations of SPA, to select an optimum one. LÄS MER