Low Complexity Iterative Piece-Wise Companding Transform for Reduction of PAPR in MIMO OFDM Systems
نویسندگان
چکیده
منابع مشابه
Piecewise Linear Iterative Companding Transform for Papr Reduction in Mimo Ofdm Systems
This paper presents a effective iterative piecewise linear companding transform for PAPR reduction. It also presents an efficient iterative procedure of companding. This procedure mainly aims to mitigate the companding distortion that occurs during the clipping operation. This analysis provides a trade off between the reduction in PAPR and BER performance. Simulation results shows that proposed...
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As discussed in chapter 3, the time domain OFDM signal has large envelope fluctuation; therefore, PAPR of OFDM signal is very high. Thus HPAs with large linear range and high resolution ADCs/DACs are required to amplify the OFDM signal, and for its conversion between analog and digital domains respectively. Many companding schemes [27]-[33] have been proposed in the literature to reduce the PAP...
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In this paper, a Peak to Average Power Ratio (PAPR) reduction technique in Orthogonal Frequency Division Multiplexing (OFDM) systems is proposed. This technique uses error correction capability of channel coding to reduce the PAPR.The coded bits at the input of OFDM modulator are separated into two groups of the Most Significant Bits (MSB) and the LeastSignificant Bits (LSB). The bits are mappe...
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In this paper a non-linear companding transform is proposed which can effectively reduce the PAPR value in OFDM systems. High value of PAPR has undesirable effects on the performance of wireless communication systems. Various companding schemes are used to reduce the problem of PAPR in orthogonal frequency division multiplexing schemes. High PAPR drives the power amplifiers used at the transmit...
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Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems have been receiving a great attention as one of the solutions for achieving high speed, efficient, and high quality of service wireless communications. However, the main drawback of MIMO OFDM systems is high Peak to Average Power Ratio (PAPR) because of its sensitivity to the nonlinear distortions in...
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ژورنال
عنوان ژورنال: Indian Journal of Science and Technology
سال: 2016
ISSN: 0974-5645,0974-6846
DOI: 10.17485/ijst/2016/v9i38/92441