Title :
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
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;
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
DOI :
10.1109/ICICS.2003.1292584
