—Orthogonal Frequency-Division Multiplexing
(OFDM) is a striking technique for achieving high-bit-rate
wireless data transmission as it has the ability to cope with
severe channel conditions. However, the potentially large
Peak-To-Average Power Ratio (PAPR) has limited its
application. Partial Transmit Sequence (PTS) is an attractive
scheme for PAPR reduction without distortion, but to obtain
preferable PAPR performance it needs many Inverse Fast
Fourier Transforms (IFFTs) which results in high complexity.
In this paper, a modified PTS scheme combined with
interleaving for PAPR reduction using Quadrature Phase Shift
Keying Modulation (QPSK) has been presented. The scheme is
very efficient and avoids the use of any extra IFFTs as was done
in PAPR reduction by ordinary PTS technique. The simulation
result shows that PAPR performance is improved with the
increase in number of subblocks.
—OFDM, PAPR, interleaving, subblock
P. Mukunthan is with the Computer Science and Engineering Department,
Adhiparasakthi Engineering College, Melmaruvathur, India (e-mail:
P. Dananjayan is with the Electronics and Communication Engineering
Department, Pondicherry Engineering College, Pondicherry, India (e-mail:
Cite:Pandurangan Mukunthan and Perumal Dananjayan, "Modified PTS with Interleaving for PAPR Reduction of
OFDM Signal with QPSK Subblocks," International Journal of Future Computer and Communication vol. 2, no. 6, pp. 22-25, 2014.