Computational and performance analysis of Radon transform based constellation identification

Author

Wood, Sally L. ; Treichler, John R.

Author_Institution

Dept. of Electr. Eng., Santa Clara Univ., CA, USA

fYear

1994

fDate

19-22 Apr 1994

Abstract

An efficient and effective method is presented for identification of the signal constellation of a voiceband or RF modem from a small number of data samples. The Radon (11917) transform based method has been shown to be more efficient than modulus based methods for identifying rectangular and hexagonal constellations with known carrier frequency and more tolerant of low SNR. When the carrier frequency is uncertain, the drift that the Radon transform method can tolerate depends on SNR, constellation size and rate of drift. The Radon transform based method is modified to greatly extend the range of carrier drift which can be tolerated with a modest increase in computation

Keywords

Radon transforms; data communication; modems; quadrature amplitude modulation; radio equipment; signal sampling; QAM; RF modem; Radon transform; carrier drift; carrier frequency; computational analysis; constellation identification; constellation size; data samples; drift rate; hexagonal constellations; low SNR; performance analysis; rectangular constellations; signal constellation; voiceband modem; Constellation diagram; Discrete Fourier transforms; HDTV; Modems; Performance analysis; Quadrature amplitude modulation; RF signals; Radio frequency; Radiofrequency identification; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.390023

Filename

390023