Combining envelope elimination and restoration and predistortion techniques for use in IEEE802.11g systems

Research output: Contribution to journalArticle (Academic Journal)peer-review

10 Citations (Scopus)

Abstract

The envelope elimination and restoration (EE&R) transmitter inherently provides high-power efficiency for linear amplification, but it suffers out-of-band spectral re-growth from a number of distortion sources such as differential time delay between envelope and phase paths and nonlinear conversion and feed-through effect due to envelope variation of the radio frequency (RF) power amplifier. The combination of EE&R and predistortion techniques is discussed, which are used to compensate for the nonlinear distortions, and a modified RF phase signal is used to reduce the feed-through effect for an IEEE802.11g application. This results in an EE&R transmitter with a performance of −37 dBc at the first adjacent channel power ratio (ACPR) and −47 dBc at the second ACPR and an average power added efficiency of 47.3%.
Translated title of the contributionCombining envelope elimination and restoration and predistortion techniques for use in IEEE802.11g systems
Original languageEnglish
Pages (from-to)832 - 838
Number of pages7
JournalIET Microwaves, Antennas and Propagation
Volume1
Issue number4
DOIs
Publication statusPublished - Aug 2007

Bibliographical note

Publisher: Institution of Engineering and Technology (IET)
Rose publication type: Journal article

Sponsorship: The work reported in this paper is part of the Wireless Enablers area of the Core 3 Research Programme of the Virtual Centre of Excellence in Mobile & Personal Communications. Mobile VCE, www.mobilevce.com, whose funding support including that of EPSRC, is gratefully acknowledged.

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