Implementaci?n en FPGA de algoritmos de sincronismo para OFDM
- Authors
- Barrag?n Guerrero, Diego Orlando
- Format
- MasterThesis
- Status
- publishedVersion
- Description
OFDM systems are intrinsically sensitive to errors of synchronization in time and frequency. Synchronization is a key step for correct packet reception. This thesis describes how to implement in FPGA several synchronization algorithms for OFDM using the symbols of the preamble de ned in IEEE 802.11a. In addition, the CORDIC algorithm is implemented (step required for carrier frequency o set estimation and compensation) in rotational and vectoring mode for a circular coordinate system,comparing the performance of various architectures in order to optimize the operating frequency and relate the error of the result with the number of iterations performed. As shown in the results, estimates are obtained with good approximations for offsets of 0, 100 and 200 kHz. The obtained results are an important instrument for the best choice of synchronization algorithm for implementation in FPGA. It was found that the different algorithms have not only different values of variance, but also different operating frequency and consumption of the FPGA resources. Throughout the project a tapped-delay channel model was considered in the analysis.
- Publication Year
- 2014
- Language
- Topic
- PROCESAMIENTO SE?AL DIGITAL
SINCRONIZACI?N
COMUNICACIONES DIGITALES
SISTEMAS EMBEBIDOS
- Repository
- Repositorio SENESCYT
- Rights
- openAccess
- License
- openAccess