Synchronization Circuit For A Frequency-Hopping Wireless Communication DSP-Based PLL Frequency Synthesizer And 2.4 GHz RF-Module Transmission Test

• Main Authors: Wen-Chun Chen, 陳文俊
• Other Authors: Huey-Ru Chuang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/00829759317034860110

碩士 === 國立成功大學 === 電機工程學系 === 89 === This thesis presents design, implementation, and measurement of a synchronization circuit for a DSP-based PLL frequency synthesizer to be used in frequency-hopping wireless communications. The synchronization circuit is derived from a typical tracking circuit which is based on an energy detector. The synchronization circuit uses the DSP-chip TMS320C50 as the controller. In synchronizing process, the coarse synchronization is achieved by all channel series search method. When tracking takes place, the synchronization circuit operation can reach a 90 percent synchronization of the received signal. The realized synchronization circuit with a DSP-based PLL frequency synthesizer are incorporated with a 2.4GHz transmitting and receiving RFIC RF-modules to conduct frequency-hopping FSK digital transmission test. The measurements include different configurations, such as fixed LO frequency, frequency hopping (with timing synchronization).