A technique for DC-offset removal and carrier phase error compensation in integrated wireless receivers

Shang, Song; Mirabbasi, Shahriar; Saleh, R.

doi:10.1109/iscas.2003.1205528

Cited by 7 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A new technique is proposed by the author for DC-offset removal, in integrated wireless receivers as DCRs (direct-conversion receivers) which use bandwidth efficient modulation schemes as QAM (quadrature amplitude modulation), DC-offset is a big issue which faces these receivers, so if it remains as it is without any compensation, it can cause damage to the overall system performance. There is a solution here which can eliminate this DC-offset by using AC-coupling to eliminate the low-frequency disturbances [23]. DCR has the RF (radio frequency) signal which is changed to zero frequency and in sequence of that the DC-offset will cause errors to the signal [24], [25], [26].…”

Section: Ac-coupling Methodsmentioning

confidence: 99%

Review of DC Offset Compensation Techniques for Grid Connected Inverters

Elghareeb

El-Refaey

Moussa

et al. 2018

IJPEDS

View full text Add to dashboard Cite

<p><strong></strong>Limitations of DC injection into the AC network is an important operational requirement for grid connected photovoltaic systems. There is one way to ensure that this issue needs a power transformer as a connection to the AC network. However, this solution adds cost, volume, mass, and power losses. Ideally there shouldn't be any DC at the output of the inverter, but practically, a small amount of DC current is present. Therefore, in this paper there are techniques for the DC offset elimination are proposed. Some have drawbacks which was treated by another technique. Also there are best solutions for eliminating DC offset as in section 17, and 18 as it explains how to reduce the DC offset in a transformerless operation with reducing the power losses, mass and the cost effect.</p>

show abstract

Section: Ac-coupling Methodsmentioning

confidence: 99%

Review of DC Offset Compensation Techniques for Grid Connected Inverters

Elghareeb

El-Refaey

Moussa

et al. 2018

IJPEDS

View full text Add to dashboard Cite

show abstract

“…Line codes reshape the transmit spectrum introducing a spectral null at DC in the signal, matching the one existing in the channel, while QFB uses the detected symbols to estimate and subtract the BLW component from the received signal. These techniques have been proposed for many different baseband or homodyne systems such as magnetic recording (e.g., [5]- [8]), wireless channels (e.g., [3], [4], [9], [10]), twisted pairs (e.g., [11], [12]), and optical fiber links (e.g., [13], [14]). However, as we shall show in this paper, these proposals are not sufficient to compensate BLW in coherent receivers where the carrier frequency offset between the received signal and the local oscillator (LO), is different from zero (e.g., intradyne or heterodyne detectors).…”

Section: Introductionmentioning

confidence: 99%

Design and parallel implementation of an adaptive baseline wander compensator for high-speed optical coherent receivers

Maggio

Hueda

2011

2011 IEEE International Symposium of Circuits and Systems (ISCAS)

View full text Add to dashboard Cite

Baseline wander (BLW) is caused by transmission zeros at DC in the frequency response of the communication channel [1]. One of its common sources is a high-pass filter used to AC-couple the received signal. Numerous BLW compensation (BLWC) schemes for baseband and homodyne communication systems have been proposed in past literature. However, a preferred architecture in modern coherent optical communications is the intradyne receiver, because it avoids complex optical phase locked loops. As a result of the carrier frequency offset experienced at the input of intradyne coherent receivers, existing BLWC techniques are not sufficient.In this work we propose an adaptive parallel-processing BLW compensation architecture for high-speed coherent intradyne fiber optic receivers. Parallel processing for the BLWC implementation is imposed by the high data rate required in current optical applications. The new compensator estimates the BLW interference based on both the detected symbols and the carrier frequency offset provided by the carrier recovery loop. Numerical results demonstrate the effectiveness of the proposed technique to mitigate BLW effects.

show abstract

“…It makes the detection of the signal dicult and causes loss of noise margin [Gab97,Hay00]. To compensate for the baseline wander degradation caused by the AC-coupling, the quantized feedback technique is used in [Sha03a]. Theoretically, AC coupling approach can also be used for wide-band signals, like CDMA system, as almost no signal energy is found near DC component.…”

Section: Osetmentioning

confidence: 99%

RF- Front-End Non-Linear coupling cancellation = Cancelación de acoplo no lineal en frontales de RF

Arambasic¹

View full text Add to dashboard Cite

A technique for DC-offset removal and carrier phase error compensation in integrated wireless receivers

Cited by 7 publications

References 12 publications

Review of DC Offset Compensation Techniques for Grid Connected Inverters

Review of DC Offset Compensation Techniques for Grid Connected Inverters

Design and parallel implementation of an adaptive baseline wander compensator for high-speed optical coherent receivers

RF- Front-End Non-Linear coupling cancellation = Cancelación de acoplo no lineal en frontales de RF

Contact Info

Product

Resources

About