Efficient M-QAM Transmission using Compacted Magnitude Modulation Tables

被引：5

作者：

Gomes, Marco ^{[1
]}

Cercas, Francisco ^{[2
]}

Silva, Vitor ^{[1
]}

Tomlinson, Martin ^{[3
]}

机构：

[1] Univ Coimbra, IT, Polo 2, P-3030290 Coimbra, Portugal

[2] ISCTE, DCTI, P-1049001 Lisbon, Portugal

[3] Univ Plymouth, Fixed & Mobile Commun Res, Plymouth PL4 8AA, Devon, England

来源：

GLOBECOM 2008 - 2008 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE | 2008年

关键词：

Magnitude Modulation; PAPR; Back-off; M-QAM; Satellite Communications;

D O I：

10.1109/GLOCOM.2008.ECP.895

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnitude Modulation is a technique proposed with success for QPSK and OQPSK in order to maximize power and bandwidth of small satellite earth stations, by reducing PAPR of the modulated signal at the HPA input. To meet the ever growing demand for higher data rates, higher order modulations have been considered. This paper shows that it is possible to use the magnitude modulation concept for the M-QAM case, even considering the huge number of symbol combinations. The constellation and RRC symmetries are explored, allowing considerable reduction on look-up table computation complexity and storage requirements. Experimental results show considerable gains (> 2dB) in PAPR and back-off reduction for 16-QAM with negligible BER losses.

引用

页数：5

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