Design and Implementation of Digital IF Based on GC5016 in WiMAX System
Yun Lin · Video Engineering · 2011
In WiMAX system, the physical layer of digital intermediate frequency, which core is GC5016 of TI company is proposed. The internal structure in GC5016 chip is introduced in this paper, and the signal processing of the chip is also analyzed. According to relevant agreements of 802.16e and taking the digital up converter as an example to configure internal parameters of the chip. The magnitude and frequency characteristic of FIR and CIC are simulated by using Matlab. The function of the digital intermediate frequency is verified by testing on intermediate frequency hardware. The testing results show that GC5016 as the digital up and down converter in the WiMAX system can meet the relevant performance requirement.