A New Single Iterative Clipping and Filtering Technique to Reduce PAPR
نویسندگان
چکیده
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 PAPR. The simulation shows that the QPSK modulated OFDM signal with 1024 subcarriers achieve a PAPR reduction to a 2dB.
منابع مشابه
PAPR Reduction in an OFDM system using Recursive Clipping and Filtering Technique
An Orthogonal Frequency Division Multiplexing (OFDM) scheme is expected as an efficient technique for next generation wireless communications. However, high Peak to Average Power Ration (PAPR) of OFDM system is the main drawback which degrades the transmitter power efficiency causes poor performance of the system. To reduce PAPR of OFDM signal, several works on clipping technique have been prop...
متن کاملAnalysis of PAPR Reduction Techniques in OFDM
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...
متن کاملPerformance Improvement of OFDM System Using Iterative Signal Clipping With Various Window Techniques for PAPR Reduction
OFDM signals demonstrates high fluctuations termed as Peak to Average Power Ratio (PAPR).The problem of OFDM is the frequent occurrence of high Peaks in the time domain signal which in turn reduces the efficiency of transmit high power amplifier.In this paper we discussed clipping and filtering technique which is easy to implement and reduces the amount of PAPR by clipping the peak of the maxim...
متن کاملImproved Clipping Technique for Reducing the Peak to Average Power Ratio in OFDM Systems
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...
متن کاملClipping Technique for BER and PAPR Reduction in OFDM System
Peak to Average Power Ratio (PAPR) is one of most detrimental aspects in any wireless communication system using multicarrier modulation technique like OFDM, which cause power degradation and spectral spreading. Due to the simplest way for PAPR reduction, clipping technique has been proposed and seems to be promising for use in commercial system. In this paper, we mainly focus on Amplitude clip...
متن کامل