Title :
Fast and accurate ACLR estimation method
Author_Institution :
Ericsson Mobile Platforms, Lund, Sweden
Abstract :
The work presents theory and simple expressions to estimate adjacent-channel leakage power ratio (ACLR or ACPR) with WCDMA signals that greatly simplify the design of analog circuits. High accuracy is obtained when the AM/AM and AM/PM conversion can be modeled by a polynomial of reasonable order. Results based on a power amplifier and a low-noise amplifier give less than 1dB estimation error for the first adjacent channel.
Keywords :
amplifiers; amplitude modulation; code division multiple access; nonlinear distortion; parameter estimation; phase modulation; polynomials; power amplifiers; AM/AM conversion; AM/PM conversion; WCDMA signals; adjacent-channel leakage power ratio estimation; analog circuit design; estimation error; low-noise amplifier; nonlinear distortion; power amplifier; Equations; Filters; Frequency domain analysis; Length measurement; Modulation coding; Multiaccess communication; Polynomials; Quantization; Random sequences; Signal processing;
Conference_Titel :
Radio and Wireless Conference, 2004 IEEE
Print_ISBN :
0-7803-8451-2
DOI :
10.1109/RAWCON.2004.1389103
