DocumentCode :
775670
Title :
SQAM: A New Superposed QAM Modem Technique
Author :
Seo, Jong-Soo ; Feher, Kamilo
Author_Institution :
Univ. of Ottawa, Ottawa, Ont., Canada
Volume :
33
Issue :
3
fYear :
1985
fDate :
3/1/1985 12:00:00 AM
Firstpage :
296
Lastpage :
300
Abstract :
A spectral and power efficient modulation techniquesuperposed quadrature amplitude modulation (SQAM-is introduced. In SQAM, the premodulation baseband signal is a double-interval ( 
) raised-cosine pulse superposed with weighted single-interval (Ts ) raisedcosine pulses. Our results indicate that SQAM has spectral advantages over OQPSK, QBL, and MSK, and better 
performance than MSK, IJF-OQPSK (or SQORC), and TFM.
) raised-cosine pulse superposed with weighted single-interval (T performance than MSK, IJF-OQPSK (or SQORC), and TFM.Keywords :
Quadrature amplitude modulation; Amplitude modulation; Baseband; Degradation; Fluctuations; Modems; Pulse amplifiers; Pulse generation; Pulse shaping methods; Quadrature amplitude modulation; Quadrature phase shift keying;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1985.1096289
Filename :
1096289
Link To Document :
