Efficient phase sequence generation for SLM scheme without side information

Kim, Hyun-Ju; Hong, Eonpyo; Ahn, Chang-Jun; Har, Dongsoo

doi:10.1587/elex.8.1393

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…In addition the BER was slightly degraded. The new PRVs used in [17], which improved the PAPR to a level higher than that of the low BER, was presented in [18], wherein more freedom in the pilot phase sequences was explored. Furthermore, other types of PRVs, such as pseudo-interferometry sequences [20], Fountain rotating vectors [19], Chu PRVs [21], and a class of perfect PRVs that reduce the PAPR [22], were examined.…”

Section: Introductionmentioning

confidence: 99%

Sliding the SLM-technique to Reduce the Non-Linear Distortion in OFDM Systems

Taher

Singh

Ismail

et al. 2013

ElAEE

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In this paper, a novel technique that can be effectively used to reduce the peak-to-average power ratio (PAPR) of the orthogonal frequency division multiplexing (OFDM) system is proposed. The proposed technique, called sliding selected mapping (SSLM), is considered a modified version of the conventional selected mapping (CSLM) scheme. SSLM uses a window with a predefined size of less than N, which carries the phase rotation vector (PRV). In contrast to the CSLM, SSLM uses length-f·N PRVs (0

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Section: Introductionmentioning

confidence: 99%

Sliding the SLM-technique to Reduce the Non-Linear Distortion in OFDM Systems

Taher

Singh

Ismail

et al. 2013

ElAEE

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Post-IFFT-Modified Selected Mapping to Reduce the PAPR of an OFDM System

Taher

Singh

Ismail

et al. 2014

Circuits Syst Signal Process

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Orthogonal frequency-division multiplexing is now one of the most important modulation techniques due to its advantages. Despite its ability to overcome the equalization problem, multipath fading channels, and other issues, this system has a serious problem concerning the high output peaks with respect to the average power, which is called the peak-to-average power ratio (PAPR). Selected mapping (SLM), partial transmitted sequence, and amplitude clipping and filtering are some efficient methods to reduce the PAPR. In a previous work, we slid a single-phase rotation vector Circuits Syst Signal Process on the data sequence in the frequency domain to reduce the PAPR and the complexity compared to the conventional SLM. In this paper, we present a novel method that utilizes the same approach of our previous work, but it processes the data after the inverse fast Fourier transform block (time-domain operations) using a modified version of the SLM scheme, which has less computational complexity than the conventional one. The mathematical derivations and the simulation results show that the PAPR, the computational complexity, and the side information were reduced significantly by the proposed method.

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