Orthogonal frequency division multiplexing (OFDM) is known as one of the promising broadband techniques in wireless communications. One of the major drawbacks of OFDM is its high peak-to-average power ratio (PAPR) due to the overlay process of all subcarrier signals. This leads to distortion problems at the receiver. Partial Transmit Sequence (PTS) technique is one of the most popular to reduce...

This paper presents a new hybrid PAPR reduction technique for the OFDM signal, which combines a sequential tone reservation method with a signal clipping method. The simulation results highlight the advantages of the proposed PAPR reduction method.

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.

This paper presents a new hybrid PAPR reduction technique for the OFDM signal, which combines a multiple symbol representations method with a signal clipping method. The simulation results highlight the advantages of the proposed PAPR reduction method.

As we know in today world communication is increasing exponentially. We want best quality of service at economical cost and at high speed. When we look in deep how these parameters can be carried out then lots of problem arises in front of us and one of them is PAPR. There are various technique to reduce like tone injection, OFDM is a multi carrier transmission scheme. This is used in 4 generat...

Recently the use of multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems has been proposed for signaling over frequency-selective fading channels. Although various aspects of these systems have been considered in the literature, the problem of the inherent high peak-to-average power ratio (PAPR) is not examined. In this paper, we consider PAPR reductio...

For multiple-input single-output (MISO) and multiple-input multiple output (MIMO) beamforming (BF) orthogonal frequency division multiplexing (OFDM) systems employing cluster-based codebook index feedback (CCIF), a new peak-to-average power ratio (PAPR) reduction method is proposed. In the proposed method, a dummy signal is generated in null space of the channel and superimposed on the original...

Orthogonal Frequency Division Multiplexing (OFDM) is one well-known scheme, which has recently become a preferred choice for parallel-data-transmission which reduces the influence of multipath fading and avoids the use of complex equalizers. However, an OFDM signal has a large peak-to-average power ratio (PAPR), which can result in significant distortion when transmitted through a nonlinear dev...

The popular modulation scheme which offers reliable high bit rate wireless system with reasonable complexity is Orthogonal Frequency Division Multiplexing (OFDM). OFDM is preferred in most high bandwidth efficient transmission systems because it effectively resists Intersymbol Interference (ISI) and is robust towards multipath fading. One of the main factor affecting the performance of an OFDM ...

In multicarrier systems, the transmitted timedomain signal exhibits large amplitude peaks. This peak-toaverage power ratio (PAPR) problem complicates the practical use of multicarrier systems: the amplifier used to transmit the signal saturates because of the large peaks and causes non-linear distortion. As this non-linear distortion frustrates severely the detection of the multicarrier signal,...