On the Application of Raised-Cosine Wavelets for Multicarrier Systems Design

Abstract

Link to publisher's version: http: //dx.doi.org/10.15866/irecap.v4i4.2455 Citation: Anoh KOO, Mapoka TT, Abd-Alhameed RA, Ochonogor O and Jones SMR (2014) On the application of raised-cosine wavelets for multicarrier systems design. International Journal on Communications Antenna and Propagation. 4(4): 143 -150.Copyright statement: © 2014 Praise Worthy Prize S.r.l. Full-text reproduced with permission from the publisher. (IRECAP), 2014, Vol. 4, N. 4, pp. 143 -150. August 2014 ISSN 2039 -5086 On International Journal on Communications and Propagation

PAPR reduction of wavelet-OFDM systems using pilot symbols

“…In [7], it was shown that wavelets have better suppressed sidelobes than conventional FFT-OFDM systems. That study did not explore other well-known wavelets, such as the orthogonal wavelets described in the literature [12], [14], [17], [20]. In the following, we demonstrate the filter response of these wavelets showing the performance of the sidelobes in Figs.…”

“…Wavelets from the orthogonal family have distortionless sidelobes [12]- [14]. We evaluate the performances of different wavelets in terms of the side-lobe performances which has the potential to influence the energy of the adjacent subbands.…”

“…In this study, we adopt the use of pilots, which are widely known to enhance channel estimation and reduce bit error probability, to also reduce the PAPR as in [11], [28], [29] for 29 different orthogonal wavelets. Wavelets are alternative multicarrier modulation kernels used in the design of OFDM-like multicarrier systems that exist in different forms [10], [13], [15], [17]. It has the property of resolving frequencies in blocks of time of interest just like the short-time Fourier transform.…”

OFDM Systems Design Using Harmonic Wavelets

“…The alternative kernel uses the DFT tool except that there exists dilation (stretching) and translation (repositioning) of the signal coefficients. Since WT finds applications in communication systems design, WT-OFDM has been studied by different authors for wireless [13]- [16] and PLC [17], [18] systems. A major drawback in its adoption is that it is computationally inefficient and recent studies have led to different computationally efficient algorithms such as the ones reported in [9] and [19].…”