A Cost Efficient Design of Polar Coordinates Based MIMO STBC FEQ for IEEE 802.16 OFDM System
| Autor: | Ying-Chen Huang, 黃英誠 |
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| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 Wireless communication has been one of the most popular fields due to its enormously potential opportunities. Among the techniques involved in such an area, the Multiple-Input Multiple-Output (MIMO) has emerged as one of the hotest issues discussed recently in virtue of its high transmission rate as well as fine transmission quality. Many groups worldwide are dedicated their vigor to the improvement in such a technique. In this thesis the discussions of physical-layer techniques with respect to the space-time coding for MIMO-OFDM system in IEEE 802.16 are addressed. To resolve the higher hardware implementation cost in MIMO compared with the Single-Input Single-Output (SISO), a coordinate transformation has been employed to translate the STBC decoding of Cartesian coordinates into the decoding of polar coordinates. In addition, a new LMS channel tracking algorithm, aimed at the effect of channel time variations, is proposed to conduct tracking for time-variant channel. A transmitter platform as well as a channel model was built by C programming. Simulations and actual implementations for channel estimation, STBC decoding, and LMS channel tracking algorithm have also been carried out in C and Verilog. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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