On the error performance of 8-QAM involving a π/2-wedge-shaped decision region

Author

Li, K.H. ; Kam, P.Y.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

Volume

2

fYear

2003

fDate

15-18 Dec. 2003

Firstpage

884

Abstract

In this paper, the error performance of an 8-QAM constellation involving a π/2-radian wedge-shaped decision region is analyzed. By rotating the orthonormal basis functions anticlockwise by π/4 radians, an exact closed-form expression for the symbol error probability over an additive white Gaussian noise channel (AWGN) is derived. Comparing the 8-QAM and 8-PSK schemes, the former yields better bit-error rate (BER) performance on the basis of equal bandwidth and the same average energy per bit.

Keywords

AWGN channels; Gray codes; error statistics; phase shift keying; quadrature amplitude modulation; π/2-radian wedge-shaped decision region; 8-QAM constellation; AWGN; additive white Gaussian noise channel; orthonormal basis function; symbol error probability; AWGN; Additive white noise; Bandwidth; Bit error rate; Computer errors; Correlators; Error probability; Euclidean distance; Performance analysis; Quadrature amplitude modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on

Print_ISBN

0-7803-8185-8

Type

conf

DOI

10.1109/ICICS.2003.1292584

Filename

1292584