UM  > 微電子研究院
A Combinatorial Impairment-Compensation Digital Predistorter for a Sub-GHz IEEE 802.11af-WLAN CMOS Transmitter Covering a 10x-Wide RF Bandwidth
Chak-Fong Cheang2; Ka-Fai Un2; Wei-Han Yu2; Pui-In Mak2; Rui P. Martins2
2015-04-01
Source PublicationIEEE Transactions on Circuits and Systems I: Regular Papers
ISSN15498328
Volume62Issue:4Pages:1025-1032
Abstract

A new combinatorial impairment-compensation digital predistorter (DPD) for a sub-GHz IEEE 802.11af-WLAN CMOS transmitter (TX) is proposed. For the TX to cover a 10x-wide bandwidth, the DPD implements a modified dynamic deviation reduction (DDR)-based Volterra series to jointly nullify the frequency-dependent I/Q imbalance, counter-intermodulation (CIM) of mixers, and nonlinearities of power amplifier (PA) with memory effect. The interactions of those impairments are firstly analyzed using two Volterra series. After applying the tandem properties of Volterra series, interactions of all impairments can be described in one Volterra series by bonding those impairments in parallel. Coefficients of the DPD are extracted with the Least- Square (LS) estimator, achieving lower running complexity than the existing DPDs, which were developed to handle the PA nonlinearities only. Verifications are based on both system-level simulations and silicon measurements of a 65-nm CMOS TX prototype. When the TX delivers a 6-MHz bandwidth, 2048-point, 64-QAM OFDM signal at > +10 dBm output power, the measured EVM is <3.7% and adjacent channel leakage ratio (ACLR) is < -40.2 dBc under individual DPD applied at each RF. A novel one-shot calibration for reuse in the entire TV-band is demonstrated also, showing EVM <4.2% and ACLR < -39.8 dBc.

KeywordCmos Counter-intermodulation (Cim) Digital Predistortion (Dpd) Frequency-dependent I/q Imbalance Power Amplifier (Pa) Rf Volterra Series Wideband Transmitter
DOIhttp://doi.org/10.1109/TCSI.2015.2390561
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000352288800011
Fulltext Access
Citation statistics
Cited Times [WOS]:8   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Affiliation1.State-Key Laboratory of Analog and Mixed-Signal VLSI and Faculty of Science and Technology, Department of ECE, University of Macau, Macao, China
2.Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portuga
Recommended Citation
GB/T 7714
Chak-Fong Cheang,Ka-Fai Un,Wei-Han Yu,et al. A Combinatorial Impairment-Compensation Digital Predistorter for a Sub-GHz IEEE 802.11af-WLAN CMOS Transmitter Covering a 10x-Wide RF Bandwidth[J]. IEEE Transactions on Circuits and Systems I: Regular Papers,2015,62(4):1025-1032.
APA Chak-Fong Cheang,Ka-Fai Un,Wei-Han Yu,Pui-In Mak,&Rui P. Martins.(2015).A Combinatorial Impairment-Compensation Digital Predistorter for a Sub-GHz IEEE 802.11af-WLAN CMOS Transmitter Covering a 10x-Wide RF Bandwidth.IEEE Transactions on Circuits and Systems I: Regular Papers,62(4),1025-1032.
MLA Chak-Fong Cheang,et al."A Combinatorial Impairment-Compensation Digital Predistorter for a Sub-GHz IEEE 802.11af-WLAN CMOS Transmitter Covering a 10x-Wide RF Bandwidth".IEEE Transactions on Circuits and Systems I: Regular Papers 62.4(2015):1025-1032.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chak-Fong Cheang]'s Articles
[Ka-Fai Un]'s Articles
[Wei-Han Yu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chak-Fong Cheang]'s Articles
[Ka-Fai Un]'s Articles
[Wei-Han Yu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chak-Fong Cheang]'s Articles
[Ka-Fai Un]'s Articles
[Wei-Han Yu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.