New predistorter using triangular memory polynomial for power amplifier of OFDM-based wireless broadband communication system

2012 ◽  
Vol 19 (2) ◽  
pp. 43-47 ◽  
Author(s):  
Cui-ping YU ◽  
Yuan-an LIU ◽  
Tian-jiao DU ◽  
Shu-lan LI
Keyword(s):  
Power Amplifier ◽  
Communication System ◽  
Broadband Communication ◽  
Wireless Broadband ◽  
Memory Polynomial

The Design of Wireless Broadband Communication System Based on OFDMA

2012 ◽  
Vol 241-244 ◽  
pp. 2275-2278
Author(s):  
Zuo Xue Liu ◽  
Jian Mei Dai ◽  
Bo Liu
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
System Structure ◽  
Antenna Gain ◽  
Broadband Communication ◽  
Allocation Model ◽  
Receiving Antenna ◽  
Wireless Broadband ◽  
Transmitting Antenna ◽  
Wired Communication

A Wireless Broadband Communication System has been made up based on OFDMA and AMC technologies. The system structure and working pattern is introduced, the OFDMA allocation model, the MIMO and AMC scheme are present, and the parameter such as transmitting power, receiver sensitivity, transmitting antenna gain and receiving antenna gain are designed. The system enables high quality wireless broadband communication. As a supplement with wired communication systems, the system could fulfill the requirement of recovery local communication rapidly when some accidents take place.

Research on Modeling Methods of Power Amplifier with Memory Effect in Broadband Communication

2014 ◽  
Vol 687-691 ◽  
pp. 4060-4063
Author(s):  
Lu Sun ◽  
Long Long Xue ◽  
Jia Li Wang ◽  
Chun Yang Zhou
Keyword(s):  
Memory Effect ◽  
Power Amplifier ◽  
Polynomial Model ◽  
Behavioral Modeling ◽  
Design System ◽  
Behavioral Models ◽  
Electric Characteristic ◽  
Memory Polynomial ◽  
With Memory ◽  
Frequency Power

Memory effect of power amplifier (PA) due to broadband signals which adopt new modulation technique is becoming obvious, and worsening the linearity of PA. Behavioral modeling for RF (Radio Frequency) power amplifier is indispensable to design digital pre-distortion system by which we can promote the efficiency of PA. According to the simulation data in the software of ADS (Advanced Design System), behavioral models of MRF21085 amplifier can be established by MATLAB. Comparison of memory polynomial model and ADS simulation of MRF21085 amplifier demonstrate memory polynomial model can represent the electric characteristic of it exactly.

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