The Orthogonal Frequency Division Multiplexing is one of the widely used modulation techniques in the broadband wireless technology. One of the main problems is the high peak-to-average power ratio of transmitted signal due to the superposition of many subcarriers. This paper presents a new hybrid peak-to-average power ratio reduction technique, which combines a partial transmit sequence method...

Physical layers of communication systems using Filter Bank Multicarrier (FBMC) as a modulation scheme provide low out-ofband leakage but suffer from the large Peak-to-Average Power Ratio (PAPR) of the transmitted signal. Two special FBMC schemes are investigated in this paper: the Orthogonal Frequency Division Multiplexing (OFDM) and the Staggered Multitone (SMT). To reduce the PAPR of the sign...

One of the main disadvantages of Orthogonal frequency division multiplex (OFDM) is high peak-to-average power ratio (PAPR). The clipping method of PAPR reduction is analyzed in this article.

Peak to Average Power Ratio (PAPR) is one of the disadvantages of OFDM system, which had been studied in several papers and reduced in several techniques. Clipping and filtering are an effective technique for reducing the PAPR in OFDM systems. It requires an accurate filtering to reduce the resulting in-band and out-ofband noise. In this paper, an improved clipping technique is proposed. The te...

Peak to Average Power Ratio (PAPR or PAR) is main problem of Orthogonal FrequencyDivision Multiplexing. The Classical Clipping method is focused in this paper for reduction ofPAR using different modulation techniques. Through the Analysis, it is shown that Clippingusing QPSK is better than BPSK.ReferencesH.G. Ryu "Combination of PAPR reduction and linearization for the ...

In this paper, we propose clipping with amplitude and phase changes of the signal points to reduce the peak-to-average power ratio (PAR) of orthogonal frequency division multiplexed (OFDM) signals in high-speed wireless local area networks defined in IEEE 802.11a physical layer. The proposed technique can be implemented with a small modification at the transmitter and the receiver remains stand...

Orthogonal Frequency division is an emerging modulation technique that provides high spectral efficiency and bandwidth. It has a drawback of high Peak to Average Power Ratio. In this paper we discuss a new clipping and filtering approach which is based on cancellation of clipping noise to overcome the drawback of PAPR in OFDM. This method requires only single iteration to resolve the problem of...

Presently, orthogonal frequency division multiplexing (OFDM) as a multicarrier transmission system is widely used. Along with its advantages it has many disadvantages. One of its major drawback is high peak to average power ratio (PAPR). As with high PAPR the spectral efficiency of the high power amplifiers degrades. So it becomes necessary to maintain the efficiency of a wireless system to red...

The low peak-to-average power ratio (PAPR) in single-carrier systems has motivated the Long Term Evolution (LTE) Third Generation Partnership Project (3GPP) to adopt single carrier frequency division multiple access (SC-FDMA) as the uplink multiple access scheme. In this paper, an enhancement of a SC-FDMA system by decreasing the PAPR is focused. A combination of clipping and Pulse shaping (RRC...

Visible light communication (VLC) is recommended for indoor transmissions in 5G network, whereby DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) is adopted to eliminate the inter-symbol interference (ISI) but suffers from considerable performance loss induced by clipping distortion. In this paper, bit-interleaved coded modulation with iterative demapping and decoding (BI...