Title :
Harmonic and intermodulation due to requantization of fixed-point numbers
Author :
Hentschel, T. ; Fettweis, G.
Author_Institution :
Tech. Univ. Dresden, Germany
fDate :
31 May-3 Jun 1998
Abstract :
In this paper the basic equations for evaluating the power of harmonic and intermodulation distortions due to requantization (rounding or truncation) of fixed-point numbers are derived. In contrast to the papers of Abuelma´atti and Blachman it is shown that not only odd harmonics and intermodulation products but also even ones are produced. Special emphasis is given to the analysis of the DC error introduced by two´s complement rounding. Some ways to circumvent this DC error are suggested
Keywords :
harmonic analysis; intermodulation distortion; quantisation (signal); signal processing; DC error; fixed-point numbers; intermodulation; requantization; Circuits; Communications technology; Digital signal processing; Equations; Fixed-point arithmetic; Intermodulation distortion; Mobile communication; Quantization; Signal processing; Teeth;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.698822
