Multi-intervals digital predistortion solution on RF amplifier and FPGA implementation

作者：Chen, Jun^*; Feng, Sui-Li; Huang, Miao-Na; Zhang, Yuan-Jian

来源：Journal of Beijing University of Posts and Telecommunications, 2012, 35(1): 90-94.

• Adjacent channel leakage ratios
• Digital predistortion
• Field-programmable gate array implementations
• Foreign companies
• FPGA implementations
• Memory polynomial models
• Polynomial modeling
• Radio frequency power

In order to reduce the adjacent spectrum leakage caused by the coherently non-linearity of radio frequency (RF) power amplifier (PA) in the communication system, a new multi-intervals polynomial model is proposed for solving non-linearity of the widespread doherty PA. According to system test, the proposed model reduces the adjacent channel leakage ratio (ACLR) up to 16 dB more than the polynomial model. Comparing to the digital predistortion solution of foreign company, the new model can further provide ACLR more than a 10 dB. Additionally, this model is more suitable for field programmable gate array (FPGA) implementation.

• 出版日期2012-2
• 单位华南理工大学