scholarly journals A2×1LINC Transceiver for Enhanced Power Transmission in Wireless Systems

2007 ◽  
Vol 2007 ◽  
pp. 1-4
Author(s):  
Mohamed Abd Elaal ◽  
Fadhel Ghannouchi
Keyword(s):  
Power Efficiency ◽  
Power Transmission ◽  
Wireless Systems ◽  
Power Ratio ◽  
Linear Amplification ◽  
Channel Power ◽  
Adjacent Channel ◽  
Simulation Results ◽  
Nonlinear Components ◽  
Adjacent Channel Power Ratio

A2×1LINC transceiver based on linear amplification using nonlinear components (LINC) architecture for wireless systems applications is proposed. The layout of the new architecture is presented and the simulation results show that the overall power efficiency of this architecture is superior by more than 300% when compared with that of a regular LINC amplifier. Also the adjacent channel power ratio (ACPR) is lowered to−64.2dBc, compared to−26.1dBc for regular LINC, which improves the system immunity against complex gain imbalances between LINC branches.

Direct algorithm for the Pareto load‐pull optimisation of power‐added efficiency and adjacent‐channel power ratio

2014 ◽  
Vol 8 (9) ◽  
pp. 1280-1287 ◽  
Author(s):  
Matthew Fellows ◽  
Charles Baylis ◽  
Joshua Martin ◽  
Lawrence Cohen ◽  
Robert J. Marks
Keyword(s):  
Power Ratio ◽  
Direct Algorithm ◽  
Channel Power ◽  
Power Added Efficiency ◽  
Adjacent Channel ◽  
Load Pull ◽  
Adjacent Channel Power Ratio

FPGA Implementation of the Generalized Parallel Two-Box Model-based Digital Predistorter for Wireless Transmitters

2019 ◽  
Vol 29 (04) ◽  
pp. 2050054
Author(s):  
Ahmad Rahati Belabad ◽  
Soheil Shahrooz ◽  
Saeed Sharifian ◽  
Seyed Ahmad Motamedi
Keyword(s):  
Fpga Implementation ◽  
Box Model ◽  
Power Ratio ◽  
Wireless Transmitters ◽  
System Generator ◽  
Proposed Model ◽  
Adjacent Channel ◽  
Simulation Results ◽  
Digital Predistorter ◽  
Adjacent Channel Power Ratio

In this paper, the FPGA implementation of the generalized parallel two-box (GPTB) model is proposed. The blocks such as multipliers, complex magnitude calculator, and magnitude powers calculator have been utilized to implement the GPTB model. In the implementation of the proposed model, a total of 30 complex multipliers, 56 noncomplex multipliers and 56 adders were used. The GPTB DPD model has been implemented by using System Generator and Vivado software. The FPGA with a part number of xc7vx690t-3 from Xilinx has been employed to implement the model. The simulation results demonstrate the correctness of the implemented model in Vivado. Also, the verification of the GPTB model is accomplished by means of the simulation of the transmitter excited by QAM signals in the ADS software. The measure of an adjacent channel power ratio (ACPR) decreased by about 16[Formula: see text]dB as a result of the simulation.

scholarly journals Linealización mediante Predistorsión Digital de un Sistema Radio sobre Fibra de Doble Banda

2017 ◽  
Vol 5 ◽  
Author(s):  
Carlos Mateo Perez ◽  
Nieves Pérez ◽  
Paloma García ◽  
Pedro L. Carro ◽  
Jesús De Mingo ◽  
...  
Keyword(s):  
Radio Over Fiber ◽  
Power Ratio ◽  
Error Vector Magnitude ◽  
Channel Power ◽  
Error Vector ◽  
Adjacent Channel ◽  
Vector Magnitude ◽  
Adjacent Channel Power Ratio

En este artículo se propone la linealización de un sistema Radio-over-Fiber (RoF) de doble banda  mediante predistorsión digital. Los resultados han sido evaluados experimentalmente con señales LTE en un sistema RoF, obteniendo mejores resultados que con el predistorsionador clásico de una banda en términos de Adjacent Channel Power Ratio (ACPR), pérdidas de potencia y Error Vector Magnitude (EVM). 

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