The IEEE802.15.4 Low Rate-Wireless Personal Area Network (LR-WLAN) is characterized by its low power consumption, low cost, and reliable data transfer. LR-WPAN can be used for security monitoring, by automatically setting various sensors which can be placed anywhere in the factory or home.
This work implements baseband signal processing and circuit design for the 868/915MHz mode of the IEEE802.15.4 LR-WPAN. The development processes include algorithm design, system simulation, FPGA implementation and system measurements. The receiver algorithm includes packet detection, phase mapping, frequency offset estimation, energy detection, synchronization, despreading and differential decoding. All algorithms are completely described herein. The system simulation match the required specifications after running the algorithms. Additionally, algorithms are composed by the Verilog Hardware Description Language (VHDL) form. The process is designed according to the hardware to identify exactly each link .
The simulations performed in this work include behavioral simulation and gate level simulation. Finally, the program is uploaded to the FPGA to verify results of the procedures is verified by Matlab, by determining the effects of transmission on the channel signal, including idle signals, initial phase, frequency offset and noise. The frequency offset arises when the oscillators of the transmitter and receiver do not match. The transmitter signal from the logic analyzer is then input to the FPGA. The signal sent from the logic analyzer is tested to determine whether it retains the original transmission signal homology. Finally, a LR-WPAN baseband circuit is successfully developed through by the above procedures.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0714105-153944 |
| Date | 14 July 2005 |
| Creators | Huang, Shih-Hung |
| Contributors | Chin-Liang Wang, Tsung-Chuan Huang, Chih-Peng Li |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714105-153944 |
| Rights | restricted, Copyright information available at source archive |
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