DocumentCode
3603717
Title
Vectored Implementation of Hierarchical 
QAM
Author
Alasti, Hadi ; Gazor, Saeed
Author_Institution
Dept. of Electr. Eng. Technol., ECPI Univ., Newport, VA, USA
Volume
62
Issue
11
fYear
2015
Firstpage
1103
Lastpage
1107
Abstract
A practical, structurally simple, and scalable Gray-coded vectored hierarchical implementation is presented for 22n quadrature amplitude modulation with square constellation. The complexity of the vectored constellation mapping and the Gray codec is significantly reduced. The proposed modulator and demodulator algorithms are scalable, which make them favorable in adaptive and hierarchical modulations on software-defined radio platforms. The proposed algorithms are implemented on low-power Atmel SAM3X8E ARM Cortex-M3 microcontroller, as a test platform.
Keywords
Gray codes; adaptive modulation; codecs; demodulators; low-power electronics; microcontrollers; quadrature amplitude modulation; software radio; Gray codec; Gray-coded vectored hierarchical implementation; adaptive modulations; demodulator algorithms; hierarchical QAM; hierarchical modulations; low-power Atmel SAM3X8E ARM Cortex-M3 microcontroller; quadrature amplitude modulation; software-defined radio platforms; square constellation; vectored constellation mapping; Circuits and systems; Complexity theory; Decoding; Demodulation; Phase shift keying; Quadrature amplitude modulation; Circuits and Systems for Software-Defined Radio (SDR).; Circuits and systems for software-defined radio (SDR); Digital Modulation Schemes; digital modulation schemes;
fLanguage
English
Journal_Title
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher
ieee
ISSN
1549-7747
Type
jour
DOI
10.1109/TCSII.2015.2456374
Filename
7156116
Link To Document