Title :
CDMA ACPR prediction using two-tone intermodulation spectrum by modeling device non-linearity with Tchebyshev polynomials
Author :
Chang, Hsin-Chin ; Chen, Seng-Woon ; Moe, Doug ; Hackman, Scott
Author_Institution :
QUALCOMM Inc., San Diego, CA, USA
Abstract :
This paper presents a novel approach to model device non-linearity using Tchebyshev polynomials. Through rigorous analysis, the relationship between the IS-95 CDMA reverse link RF signal adjacent channel power regrowth (ACPR) and the two-tone intermodulation power spectrum density is established. This approach of CDMA ACPR prediction requires only the classical two tone measurement setup, and the data calculation is made by matrix multiplication. No CDMA signal source, vector network analyzer, or curve-fitting software are needed
Keywords :
Chebyshev approximation; code division multiple access; intermodulation; matrix multiplication; polynomial matrices; radio links; spectral analysis; CDMA ACPR prediction; IS-95 CDMA reverse link RF signal adjacent channel power regrowth; Tchebyshev polynomials; data calculation; device nonlinearity; matrix multiplication; two-tone intermodulation power spectrum density; Curve fitting; Equations; Linearity; Multiaccess communication; Polynomials; Predictive models; Signal analysis; Spectral analysis; Vehicles; Wireless communication;
Conference_Titel :
Wireless Communications Conference, 1997., Proceedings
Conference_Location :
Boulder, CO
Print_ISBN :
0-7803-4194-5
DOI :
10.1109/WCC.1997.622260
