On the reduction of the out-of-band radiation of OFDM-signals

Pauli, Mario; Kuchenbecker, Petra

doi:10.1109/icc.1998.683036

Cited by 58 publications

(28 citation statements)

References 5 publications

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“…The channel noise is AWGN with variance . The total output noise power is bounded as follows: (14) The SNR loss is bounded by (15) where .…”

Section: B Noise Analysismentioning

confidence: 99%

“…When , we can follow the procedure in the proof of Lemma 3 to show that . Using the bounds of given in (14), we can obtain the bounds of in (15).…”

Section: B Noise Analysismentioning

confidence: 99%

“…If extra guard time is available, postprocessing can be avoided at the cost of a reduced transmission rate [15]. When there is no extra cyclic prefix, the use of windowing at the transmitter requires postprocessing at the receiver.…”

mentioning

confidence: 99%

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Window designs for DFT-based multicarrier systems

Lin

Phoong

2005

IEEE Trans. Signal Process.

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Abstract-In this paper, we consider window designs for discrete Fourier transform (DFT) based multicarrier transceivers without using extra cyclic prefix. As in previous works of window designs for DFT-based transceivers, a postprocessing matrix that is generally channel dependent, is needed to have a zero-forcing receiver. We show that postprocessing is channel independent if and only if the window itself has the cyclic-prefixed property. We design optimal windows with minimum spectral leakage subject to the cyclic-prefixed condition. Moreover, we analyze how postprocessing affects the signal-to-noise ratio (SNR) at the receiver, which is an aspect that is not considered in most of the earlier works. The resulting SNR can be given in a closed form. Join optimization of spectral leakage and SNR are also considered. Furthermore, examples demonstrate that we can have a significant reduction in spectral leakage at the cost of a small SNR loss. In addition to cyclic-prefixed systems, window designs for zero-padded DFT-based transceivers are considered. For the zero-padded transceivers, windows that minimize spectral leakage can also be designed.

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“…The channel noise is AWGN with variance . The total output noise power is bounded as follows: (14) The SNR loss is bounded by (15) where .…”

Section: B Noise Analysismentioning

confidence: 99%

“…When , we can follow the procedure in the proof of Lemma 3 to show that . Using the bounds of given in (14), we can obtain the bounds of in (15).…”

Section: B Noise Analysismentioning

confidence: 99%

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Window designs for DFT-based multicarrier systems

Lin

Phoong

2005

IEEE Trans. Signal Process.

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“…Furthermore, Gaussian filtered minimum shift keying (GMSK) shows better outband reduction compared with MSK, which takes the sacrifice of the constant envelope [7]. Pauli et al [8] proposed the bandwidth efficient reduction of the crest factor (BERC) method.…”

Section: Introductionmentioning

confidence: 99%

Optimal Waveform of the Partial-Respond Signal Based on Minimum Out-of-Band Radiation Criterion

Shang

et al. 2017

Applied Sciences

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This paper presents a novel method designing an optimized waveform with high spectral efficiency based on minimum out-of-band radiation criterion. Introducing the Pan-function model, Fourier series, and constraints, we achieve the numeric solution of the optimized baseband signals. The optimal waveform provides an excellent bandwidth efficiency, and its bit error rate (BER) performance is improved using the minimum cross-correlation function. To verify the proposed model, we present a simulation of the signal modulation and demodulation schemes using MATLAB software. The results are consistent with expected results, verifying the correctness of this method.

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“…One of the major drawbacks of any OFDM system is that the signal has a nonconstant envelope exhibiting peaks that exceeds the mean power, and the signal is said to have a high peak-to-average power ratio (PAPR). To prevent spectral growth of the OFDM signal in the form of intermodulation among subcarriers and out-of-band radiation [2], the transmit amplifier must be operated in its linear region. Amplifiers with large linear range are expensive and this can increase the cost of the implementation of OFDM.…”

Section: Introductionmentioning

confidence: 99%

Modified PTS with FECs for PAPR Reduction of OFDM Signals

Mukunthan¹,

Dananjayan²

2010

IJCA

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Partial transmit sequence (PTS) is an attractive technique for PAPR reduction without distortion, but to obtain preferable PAPR performance it needs many inverse fast Fourier transforms (IFFTs), which results in high computational complexity. In order to reduce the complexity, modified PTS technique, with real and imaginary parts, separately multiplied with phase factors is considered in this paper. To reduce PAPR further the forward error-correcting codes (FECs) such as Golay codes and Turbo codes are employed in the modified PTS radix FFT, where, the PAPR is jointly optimized in both the real and imaginary part. The simulation results show that the combined FEC with modified PTS technique significantly provides better PAPR reduction with reduced computational complexity compared to ordinary PTS with FEC. General TermsOrthogonal frequency division multiplexing (OFDM), peak-toaverage power ratio (PAPR), partial transmit sequence (PTS).

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On the reduction of the out-of-band radiation of OFDM-signals

Cited by 58 publications

References 5 publications

Window designs for DFT-based multicarrier systems

Window designs for DFT-based multicarrier systems

Optimal Waveform of the Partial-Respond Signal Based on Minimum Out-of-Band Radiation Criterion

Modified PTS with FECs for PAPR Reduction of OFDM Signals

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