Non‐linear companding based hybrid PAPR reduction approach for DCT‐SCFDMA system

Hossain, Md. Rabiul; Ahmmed, Kazi Tanvir

doi:10.1049/iet-com.2017.0921

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…Various techniques have been proposed in the literature to mitigate the effect of this problem. Among them, we can cite methods like Clipping, Clipping and filtering [4][5] [6], Active Constellation Extension (ACE) [7] [8], Tone Reservation (TR) [6][9] [10] [11] [12], Selected Mapping (SLM) [13] [14], Switching [15], Coding methods [16], Partial Transmit Sequence (PTS) [8] [17] [18], Interleaving [19] [20] and Discrete Cosine Transform (DCT) [21] [22] [23] [24]. Those techniques can be classified into 3 types [25]: the adding signal techniques, the probabilistic techniques and the coding techniques.…”

Section: Introductionmentioning

confidence: 99%

“…As for interleaving [19] [20], it is possible to act on the input signal, in order to reduce its peaks. The main idea is the implementation of pre-coding techniques like the DCT [23] [24], generally used in images and video compression, who well-known for its performances in PAPR reduction [21] [22]. However, DCT theoretically has no direct influence on the transmission quality.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Shaping Code in Conjunction with DCT for PAPR Reduction in Multicarrier System

Aimer

Bouazza

Bachir

et al. 2020

Preprint

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Nonlinear behavior and power efficiency of the power amplifier (PA) depend in a contradictory way on the input signal amplitude distribution. The transmitted signal in multi-carrier modulation exhibits high peak-to-average power ratio (PAPR) and large bandwidths, leading to the degradation of the radio link and the generation of additional out-of-band interferences, which degrade the quality of the transmission. Practical solutions exist, like a power back-off, but with unacceptable cost-efficient conditions at the transmitter. This paper deals with efficiency improvement using a new PAPR reduction method based on the combination of Discrete Cosine Transform (DCT) and shaping technique. The main principle is to determine an optimal coding scheme according to a trade-off between efficiency performances and coding complexity. Simulation and experimental results in the context of OFDM Signal and in presence of a 20 W - 3,7 GHz RF-PA show an improvement on PAPR reduction of about 3,25 dB. Also, the communication criteria like BER (Bit Error Rate) and EVM (Error Vector Magnitude) are improved of about 2 decades and 8 %, respectively.

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