Grado en Ingeniería en Sistemas de Telecomunicación - TFG - Cursos 2014/2015 - 2019/2020
Permanent URI for this communityhttps://hdl.handle.net/10171/41176
See
9 results
Results
- Iterative Decoder for Quantum Turbo Codes: Performance Analysis and Enhancement.(Servicio de Publicaciones. Universidad de Navarra, 2019-09-30) Iñiguez-de-Gordoa-Pouso, J.A. (Jon Ander); Crespo-Bofil, P. (Pedro)Quantum error correction is necessary in quantum communication. In that sense, quan- tum turbo codes present a remarkably low probability of error compared to other quantum error correcting codes. The document of this Final Degree Project analyses the performance of iterative SISO decoders in quantum turbo codes, especially when the decoder is under the influence of a channel mismatch. The obtained results suggest that the closer the es- timated depolarizing probability is to the actual depolarizing probability of the channel, the lower the WER of the SISO decoder will be. In this document, chapter 1 contemplates the relevance of quantum error correcting codes in current and future quantum technologies. Chapter 2 provides the basic background on linear algebra and quantum mechanics that are crucial in order to understand quantum error correction. Chapter 3 presents a few notions in quantum error correction and the sta- bilizer codes, which are the cornerstone in order to export classical error correcting codes into the quantum world. Chapter 4 presents the actual quantum turbo codes, their construc- tion, their decoding algorithm and their performance when the decoder suffers from channel mismatch. Chapter 5 summarizes the main conclusions of this Final Degree Project, and chapter 6 provides the budget of the whole project.
- Reader Arquitecture Characterization for Chipless Wireless Sensors Applications.(2019) Villa-González, F. (Fátima); Valderas Gazquez, D.(Daniel)The main goal of this project is to design, implement and characterize a portable chipless reader for resonator chipless tags by comparing it with a non-portable chipless reader. In laboratory settings, test equipment such as Vector Network Analyzers (VNAs), Signal Analyzers and Digital Storage Oscilloscopes (DSO) are used. However, it is not economical to use these expensive and heavy laboratory pieces of equipment for the real-world applications of chipless RFID systems. Therefore, apart from reducing the cost by using chipless technologies, it is essential to develop a low-cost reader device that makes the system even more inexpensive. This is basically done by replacing the large and bulky equipment with some commercial components that make the device light and portable. Concretely, the design of the reader presented in this document, implements a Wideband Synthesizer with Integrated VCO in order to replace the Signal Generator. The most challenging task is the correct synchronization of the new device with the rest of the elements of the reader. This is achieved by a new computer software specifically programmed to control the whole reader, which is based on a previous version. The system’s performance is tested with several chipless tags; resonators with different resonance frequencies. The obtained results are compared to the measurements taken with a VNA and with a previous version of the reader composed by laboratory instruments. The measurements are made with a gain/phase detector that sends its data to an Arduino. Moreover, the information is processed by a Visual Studio project written in C Language that also contains the software with the user interface to control the synthesizer from the computer and all the data processing and visualization algorithms. The aim of the project is to describe the characterization of a reader based on frequency domain detection techniques and obtain the most accurate and effective performance of it to improve the previous version of the system and approach to an applicable device.
- Generative Model for Burst Error Characterization in Narrowband Indoor Powerline Channel.(2015-02-03) Balda-Cañizares, E. (Emilio)Abstract—This paper presents a generative model for burst characterization of the underlying error profiles obtained from the Narrowband Indoor Powerline Channel. Using error sequences measured from the transmission link, a generative model that produces error sequences of any length, with similar relevant statistics, is obtained.