The reduction of PAPR in OFDM systems using clipping and SLM method

More, Aparna P.; Somani, Sunil B.

doi:10.1109/icices.2013.6508385

Cited by 19 publications

(15 citation statements)

References 11 publications

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“…The out-of-band radiation caused by high peak to average power ratio and originated from the side lobes of the modulated subcarriers. [4] This can be minimized by iterative clipping and filtering method.…”

Section: Iterative Clipping and Filtering Techniquementioning

confidence: 99%

“…This method is based on amplitude clipping and filtering [1][2][3][4]. The steps of the proposed technique are follows as.…”

Section: Proposed Papr Reduction Techniquementioning

confidence: 99%

“…Also high PAPR Increase the requirements of the dynamic range of digital to analog and analog to digital convertor. [4], [5] There have been many techniques proposed to reduce the PAPR of the OFDM signal such as selective mapping (SLM), companding, tone reservation and tone injection, partial transmit sequences (PTS), amplitude clipping etc. [2] However, there are certain limitations with these techniques.…”

Section: Introductionmentioning

confidence: 99%

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PAPR Reduction in OFDM System Using Iterative Clipping and Filtering Technique Along with Convolutional Code

Sahu

Veeramanju

2015

2015 Fifth International Conference on Communication Systems and Network Technologies

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Orthogonal Frequency Division Multiplexing (OFDM) is widely used technique in high data rate wireless communication system. The major drawback of the OFDM system is large Peak to Average Power Ratio (PAPR) which can overweigh all the potential benefit of the OFDM system. Due to high PAPR, the power amplifier lead to saturation and generates inter modulation among the subcarriers. In this paper, we propose iterative clipping and filtering technique along with convolutional code that clipped the amplitude of the OFDM signal, which reduces the PAPR without much degradation in the bit error rate (BER). The reduction in amplitude variation by clipping creates distortion in the OFDM signal. Due to this distortion at the receiver end result higher BER. This BER performance is further improved by using convolutional code. MATLAB coding result shows that sharp drop on Complementary Cumulative Distribution Function (CCDF)Curve and reduced the PAPR.

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Section: Iterative Clipping and Filtering Techniquementioning

confidence: 99%

“…This method is based on amplitude clipping and filtering [1][2][3][4]. The steps of the proposed technique are follows as.…”

Section: Proposed Papr Reduction Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

PAPR Reduction in OFDM System Using Iterative Clipping and Filtering Technique Along with Convolutional Code

Sahu

Veeramanju

2015

2015 Fifth International Conference on Communication Systems and Network Technologies

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“…Therefor, through the time-domain signal 2 [ ] err n , we'll be able to detect the constellation mapping point offset for the sub-carrier P , and thus correct the OFDM signals. Similarly, if the demodulated signal offsets occur in two or more subcarriers, we can calibrate the errors in a similar way above as well.…”

Section: A Sub-carrier Correctionmentioning

confidence: 99%

“…In the OFDM systems [1], the modulated signals (IFFT of transmitted data vector) always exhibits a rather great peakaverage ratio [2], which requires to be compressed for effectively transmitting over real channels. The data compression technology [3] officially begins in the late 1930 and early 1940 of the 20th century.…”

Section: Introductionmentioning

confidence: 99%

A Nearly Loss-less Compression Technology based on CTP and Partial Sample Points Calibration for OFDM Signal

Li¹,

Yu²,

Su³

et al. 2015

Proceedings of the 2015 International Conference on Computer Science and Intelligent Communication

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Abstract-Traditional compression algorithms of OFDM signals with a low compression ratio and a low SNR come along with a high error rate, which fail to meet the requirements of OFDM systems. To achieve high compression ratio and low error rate, we propose a new algorithm based on a combination of clipping with tail plug (CTP) and partial sample calibration (PSC). The new algorithm can achieve the nearly loss-less compression and the compression ratio can be as high as 1.86:1 with a error rate less than 10^(-7), while SNR corresponding to quantization error is up to 70dB in 4096-QAM OFDM signal modulation schemes, which meets well for the requirements of the FTTdp+GDSL systems.

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