IEICE TRANSACTIONS on Communications
Irregular Triangular Quadrature Amplitude Modulations
Summary :
The recently suggested regular-type triangular quadrature amplitude modulation (TQAM) provides considerable power gain over square quadrature amplitude modulation (SQAM) at the expense of a slight increase in detection complexity. However, the power gain of the TQAM is limited due to the constraint that signal points should be regularly located at the vertexes of contiguous equilateral triangles. In this paper, we investigate two irregular (optimum and suboptimum) TQAMs where signal points are irregularly distributed while preserving the equilateral triangular lattice, and calculate achievable power gains of the proposed constellations. We also address optimum and suboptimum bit stream mapping methods and suggest a simple and optimum detection method for the constellations to be meaningful in practical implementation, and present analytical and simulation results. The proposed constellations can provide the asymptotic power gains of 0.825dB and 0.245dB over SQAM and regular TQAM, respectively.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E97-B No.7 pp.1358-1364
- Publication Date
- 2014/07/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E97.B.1358
- Type of Manuscript
- PAPER
- Category
- Fundamental Theories for Communications
Authors
Sung-Joon PARK
Gangneung-Wonju National University
Keyword
Latest Issue
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Sung-Joon PARK, "Irregular Triangular Quadrature Amplitude Modulations" in IEICE TRANSACTIONS on Communications,
vol. E97-B, no. 7, pp. 1358-1364, July 2014, doi: 10.1587/transcom.E97.B.1358.
Abstract: The recently suggested regular-type triangular quadrature amplitude modulation (TQAM) provides considerable power gain over square quadrature amplitude modulation (SQAM) at the expense of a slight increase in detection complexity. However, the power gain of the TQAM is limited due to the constraint that signal points should be regularly located at the vertexes of contiguous equilateral triangles. In this paper, we investigate two irregular (optimum and suboptimum) TQAMs where signal points are irregularly distributed while preserving the equilateral triangular lattice, and calculate achievable power gains of the proposed constellations. We also address optimum and suboptimum bit stream mapping methods and suggest a simple and optimum detection method for the constellations to be meaningful in practical implementation, and present analytical and simulation results. The proposed constellations can provide the asymptotic power gains of 0.825dB and 0.245dB over SQAM and regular TQAM, respectively.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.1358/_p
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@ARTICLE{e97-b_7_1358,
author={Sung-Joon PARK, },
journal={IEICE TRANSACTIONS on Communications},
title={Irregular Triangular Quadrature Amplitude Modulations},
year={2014},
volume={E97-B},
number={7},
pages={1358-1364},
abstract={The recently suggested regular-type triangular quadrature amplitude modulation (TQAM) provides considerable power gain over square quadrature amplitude modulation (SQAM) at the expense of a slight increase in detection complexity. However, the power gain of the TQAM is limited due to the constraint that signal points should be regularly located at the vertexes of contiguous equilateral triangles. In this paper, we investigate two irregular (optimum and suboptimum) TQAMs where signal points are irregularly distributed while preserving the equilateral triangular lattice, and calculate achievable power gains of the proposed constellations. We also address optimum and suboptimum bit stream mapping methods and suggest a simple and optimum detection method for the constellations to be meaningful in practical implementation, and present analytical and simulation results. The proposed constellations can provide the asymptotic power gains of 0.825dB and 0.245dB over SQAM and regular TQAM, respectively.},
keywords={},
doi={10.1587/transcom.E97.B.1358},
ISSN={1745-1345},
month={July},}
Copy
TY - JOUR
TI - Irregular Triangular Quadrature Amplitude Modulations
T2 - IEICE TRANSACTIONS on Communications
SP - 1358
EP - 1364
AU - Sung-Joon PARK
PY - 2014
DO - 10.1587/transcom.E97.B.1358
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2014
AB - The recently suggested regular-type triangular quadrature amplitude modulation (TQAM) provides considerable power gain over square quadrature amplitude modulation (SQAM) at the expense of a slight increase in detection complexity. However, the power gain of the TQAM is limited due to the constraint that signal points should be regularly located at the vertexes of contiguous equilateral triangles. In this paper, we investigate two irregular (optimum and suboptimum) TQAMs where signal points are irregularly distributed while preserving the equilateral triangular lattice, and calculate achievable power gains of the proposed constellations. We also address optimum and suboptimum bit stream mapping methods and suggest a simple and optimum detection method for the constellations to be meaningful in practical implementation, and present analytical and simulation results. The proposed constellations can provide the asymptotic power gains of 0.825dB and 0.245dB over SQAM and regular TQAM, respectively.
ER -
English
