One of the drawbacks of an orthogonal frequency division multiplexing (OFDM) system is the larger peak to averaged power ratio (PAPR). The PAPR reduction scheme is a complicated problem, especially when a resource allocation is considered jointly. In this paper, a joint algorithm for determining an optimal resource allocation with PAPR awareness is proposed. Firstly, an adaptive tone reservatio...

The justification of implementing PAPR reduction schemes in OFDM is discussed. Decreasing PAPR increases the efficiency of the linear power amplifier, yielding an increase in average power emitted and consequentially an increase in capacity. However, implementing a PAPR reduction scheme s such as Tone Reservation or Selective Mapping means a decrease in the payload bandwidth which causes a decr...

PAPR reduce the efficiency of system in MC-CDMA so we have to use PTS to recover from this. In this paper, Partial Transmit Sequence technique is used, which uses suboptimal algorithms & their performances are compared. For their performance evaluating PAPR reduction scheme is CCDF of the PAPR of transmitted continuous time signal. BPSO has better PAPR reduction capability than BFO Algorithm on...

Abstract— One of the challenging issues for Filter Bank Multicarrier (FBMC) systems is their high Peak-to-Average Power Ratio (PAPR) which leads to the saturation of the high power amplifiers and consequently increases the out of band power. In this paper, we evaluate different FBMC PAPR reduction techniques and especially analyze the impact of the prototype filter length/overlapping factor on ...

Orthogonal Frequency Division Multiplexing (OFDM) has been currently under intense research for broadband wireless transmission due to its robustness against multi-path fading. In multicarrier modulation, the most commonly used technique is OFDM, it has recently become very popular in wireless communication. The main drawback of OFDM is Peak to average power ratio (PAPR). This paper present sel...

OFDM systems have the inherent problem of a high peak to average power ratio (PAPR). OFDM Suffers as the no of Subcarriers operating in the large dynamic range operates in the non-linear region of amplifier due to OFDM suffer the PAPR problem Application of high power amplifiers results in increased component cost. In general, there has been a trade-off between PAPR reduction and computational ...

Orthogonal Frequency Division Multiplexing (OFDM) has been used in many advanced wireless communication systems due to its high spectral efficiency and robustness to frequency selective fading channels. However, the major concern with OFDM system is the high peak-to-average power ratio (PAPR) of the transmitted signal. Some of the popular techniques used for PAPR reduction in OFDM system are co...

Peak-to-average power ratio (PAPR) is one of the main drawbacks in orthogonal frequency division multiplexing (OFDM) systems. High PAPR forces the power amplifier to back off in order to operate in its linear region, which degrades the power efficiency of the system. Several PAPR reduction techniques have been developed, but most of them have not considered both complexity and PAPR reduction. I...

Orthogonal frequency division multiplexing (OFDM) modulation using orthogonal subcarriers reduces the delay spread by increasing robustness to multipath fading and can use overlapped bandwidth due to orthogonality on frequency domain. The main drawback of Orthogonal Frequency Division Multiplexing(OFDM) systems is the high peak-to average power ratio (PAPR),which significantly reduces the effic...

One of the drawback of multicarrier code division multiple access (MC CDMA) is the high peak to average power ratio (PAPR). In this paper A novel scheme based on pulse shaping described for PAPR reduction. Here three different pulse shaping filters (Raised cosine, Sinc power pulse and Nyqist pulse) are described for PAPR reduction in MC CDMA system. The method is based on the proper selection o...