An optimal circular 16-QAM modulation technique for wavelet and fourier based OFDM

Author

Abdullah, Khaizuran ; Ismail, Ahmad Fadzil ; Hashim, Wahidah ; Hussain, Zahir M.

Author_Institution

Dept. of Electr. & Comput. Eng., IIUM, Kuala Lumpur, Malaysia

fYear

2010

fDate

11-12 May 2010

Firstpage

1

Lastpage

6

Abstract

A new approach of an optimal 16-QAM modulation has been introduced to be used for both Fourier and wavelet based OFDM. The comparison between circular and square 16-QAM is included. It is shown that the power consumption of circular is better than the square by 0.5359 W or -2.71 dB for the same minimum distance 2d. Simulation works for Fourier and wavelet based OFDM have been performed. In Fourier base OFDM, the circular has slightly out-performed the square when the number of subcarriers is varied from 32 to 256 at different BER values. When considering wavelet based OFDM, all wavelet families except Biorthogonal and Reverse-Biorthogonal have performed similar result for both modulation schemes. Of all Biorthogonal families, bior5.5 is the most out-performed one when using circular and square 16-QAM respectively.

Keywords

Fourier transforms; OFDM modulation; error statistics; quadrature amplitude modulation; wavelet transforms; BER values; Fourier-based OFDM; optimal circular 16-QAM modulation technique; orthogonal frequency division multiplexing; quadrature amplitude modulation; reverse-biorthogonal wavelet; square 16-QAM; wavelet-based OFDM; Bit error rate; Discrete wavelet transforms; OFDM; Quadrature amplitude modulation; Receivers; Circular 16-QAM; Fourier-based OFDM; Square 16-QAM; wavelet-based OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Communication Engineering (ICCCE), 2010 International Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-6233-9

Type

conf

DOI

10.1109/ICCCE.2010.5556821

Filename

5556821