Resource Block Based Precoding Schemes for Suppressing Out-of-Band Emission

Fang, Juan; You, Zihao; Lu, I‐Tai; Li, Jialing; Yang, Rui

doi:10.1109/milcom.2013.265

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…Thus, the reduction of the normalized complexity from 68.55 to 23.47, as shown in Table 2, is at the expense of an OOBE increase of 5 dB. Similar results have been shown in [25] and are omitted here. The PAPRs of various approaches are plotted in Fig.…”

Section: Spectral Containment and Paprsupporting

confidence: 77%

“…To deal with these problems caused by non-contiguous and dynamically changing spectrum, a resource block (RB) strategy for the filtering approach is proposed in [14]. Similarly, we have also proposed a RB strategy for the precoding approach (see Appendix and [25]) to adapt to the non-contiguous and dynamically changing spectrums.…”

Section: Implications For Non-contiguous and Dynamic Changing Spectrummentioning

confidence: 99%

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Practical designs for out-of-band emission suppression and adjacent channel interference rejection for orthogonal frequency division multiplexing-based cognitive radios

Fang

2015

J Wireless Com Network

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Opposite to the conventional wisdom, practical considerations for out-of-band emission (OOBE) suppression and adjacent channel interference (ACI) rejection in orthogonal frequency division multiplexing (OFDM) -based cognitive radio systems are not completely alike. For example, ACI will increase after discarding the cyclic prefix (CP) because the interference signal is also truncated during the CP removal process. Furthermore, effective OOBE is much larger than the estimated OOBE if there is a timing offset (TO) between the primary and secondary users. To the best of our knowledge, these and some other practical issues have not been well addressed. Various important practical issues (including multipath delay spread, high peak-to-average power ratio (PAPR), spectral efficiency loss, high complexity, sensitivities to frequency and timing offsets, non-contiguous and dynamically changing spectrum, CP removal, spectral containment, etc.) concerning OOBE suppression and ACI rejection are studied in this paper. Numerical results show that none of the existing approaches can deal with all practical issues satisfactorily. Hybrid combinations of frequency-domain approaches (spectral precoding and PAPR precoding) and time-domain approaches (windowing and filtering) are developed to maintain the merits and mitigate the drawbacks of each constituent approach in order to deal with these practical challenges. It is shown that a combination of filtering and precoding provides the best OOBE suppression and a combination of windowing and precoding provides the best ACI rejection characteristics in our numerical examples.

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Section: Spectral Containment and Paprsupporting

confidence: 77%

Section: Implications For Non-contiguous and Dynamic Changing Spectrummentioning

confidence: 99%

Practical designs for out-of-band emission suppression and adjacent channel interference rejection for orthogonal frequency division multiplexing-based cognitive radios

Fang

2015

J Wireless Com Network

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“…NC has the lowest complexity even though it uses an iterative decoder. However, based on [19, 20], the total active subcarriers can be divided into multiple resource blocks (RBs). Each RB contains a small number of subcarriers, e.g.…”

Section: Numerical Resultsmentioning

confidence: 99%

High‐performing orthogonal frequency division multiplexing precoding scheme for OOBE suppression

You¹,

Lu²,

Li³

2016

IET Communications

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“…In (25), a m = 1 for every m, and in (26), θ = 2π/N. When N p = 0, the resulting G PAPR is a DFT matrix and the coding rate λ is 1.…”

Section: Precoding For Suppressing Paprmentioning

confidence: 99%

“…There are some precoding approaches that cannot be represented by (24) using (25) and (26). One example is the DCT [14] where the precoder element is defined as…”

Section: Precoding For Suppressing Paprmentioning

confidence: 99%

Resource Block Based Precoding Schemes for Suppressing Out-of-Band Emission

Cited by 5 publications

References 11 publications

Practical designs for out-of-band emission suppression and adjacent channel interference rejection for orthogonal frequency division multiplexing-based cognitive radios

Practical designs for out-of-band emission suppression and adjacent channel interference rejection for orthogonal frequency division multiplexing-based cognitive radios

High‐performing orthogonal frequency division multiplexing precoding scheme for OOBE suppression

Precoder designs for jointly suppressing out‐of‐band emission and peak‐to‐average power ratio in an orthogonal frequency division multiplexing system

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