Modified TR Scheme with Low Complexity in Mobile WiMAX Systems

Cho, Soobum; Park, Soo Young

doi:10.1587/transcom.e94.b.856

Cited by 1 publication

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“…4.3 and 4.4 and the simulation results obtained by simulating 10 5 randomly generated input symbol sequences with 16-quadrature amplitude modulation (16-QAM) for each subcarrier. Since the distribution of p B u (b u ) for the Nyquist sampling and four-times oversampling cases in (10) and (16) are too complex to deal with, numerical integration and least squares curve fitting of Υ(γ),Ψ(γ), and Φ(γ) in (19) are utilized to obtain analytical results. The number of subcarriers is N = 256 and the numbers of the alternative OFDM signal sequences are…”

Section: Comparison Between Analytical and Simulation Resultsmentioning

confidence: 99%

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An Efficient Selection Method of a Transmitted OFDM Signal Sequence for Various SLM Schemes

Kim

Joo

et al. 2016

IEICE Trans. Commun.

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Many selected mapping (SLM) schemes have been proposed to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signal sequences. In this paper, an efficient selection (ES) method of the OFDM signal sequence with minimum PAPR among many alternative OFDM signal sequences is proposed; it supports various SLM schemes. Utilizing the fact that OFDM signal components can be sequentially generated in many SLM schemes, the generation and PAPR observation of the OFDM signal sequence are processed concurrently. While the u-th alternative OFDM signal components are being generated, by applying the proposed ES method, the generation of that alternative OFDM signal components can be interrupted (or stopped) according to the selection criteria of the best OFDM signal sequence in the considered SLM scheme. Such interruption substantially reduces the average computational complexity of SLM schemes without degradation of PAPR reduction performance, which is confirmed by analytical and numerical results. Note that the proposed method is not an isolated SLM scheme but a subsidiary method which can be easily adopted in many SLM schemes in order to further reduce the computational complexity of considered SLM schemes. key words: inverse fast Fourier transform (IFFT), low complexity, orthogonal frequency division multiplexing (OFDM), peak-to-average power ratio (PAPR), selected mapping (SLM) Dong-Joon Shin received the B.Sc. degree

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Section: Comparison Between Analytical and Simulation Resultsmentioning

confidence: 99%

“…a) E-mail: kkh@ccl.snu.ac.kr DOI: 10.1587/transcom.2015EBP3275 tion extension (ACE) [7], tone reservation (TR) [8]- [10], partial transmit sequence (PTS) [11], and selected mapping (SLM) [12]. Among them, SLM and PTS schemes have been widely studied because of their good PAPR reduction performance without bit error rate (BER) degradation.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Selection Method of a Transmitted OFDM Signal Sequence for Various SLM Schemes

Kim

Joo

et al. 2016

IEICE Trans. Commun.

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Modified TR Scheme with Low Complexity in Mobile WiMAX Systems

Cited by 1 publication

References 4 publications

An Efficient Selection Method of a Transmitted OFDM Signal Sequence for Various SLM Schemes

An Efficient Selection Method of a Transmitted OFDM Signal Sequence for Various SLM Schemes

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