Presentation 2001/4/12
A study on narrowband linear modulation scheme with quasi-constant envelope
Shinsuke Uchida, Hideichi Sasaoka,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) We have proposed a new digital modulation scheme, narrowband linear modulation scheme with quasi-constant envelope. This scheme cannot only obtain sufficient frequency efficiency but also apply to the system with nonlinear amplifier. The principle of the proposing scheme is that lowering pulse amplitude of data symbol sequence and using full roll-off filter with narrower impulse response for offset-QPSK. As a result, envelope fluctuation of the proposing scheme is restricted within 11%, and the spectrum after nonlinear amplifier is as same as that of GMSK for BT of 0.3. In addition, in both cases of coherent detection and MLSE, the BER performance of the proposing scheme is deteriorated from theory by approximately 1dB in E_b/N_0 at BER of 10^<-4>.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) frequency efficiency / nonlinear amplifier / quasi-constant envelope / MLSE
Paper # RCS2001-11,CQ2001-11
Date of Issue

Conference Information
Committee CQ
Conference Date 2001/4/12(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

Paper Information
Registration To Communication Quality (CQ)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A study on narrowband linear modulation scheme with quasi-constant envelope
Sub Title (in English)
Keyword(1) frequency efficiency
Keyword(2) nonlinear amplifier
Keyword(3) quasi-constant envelope
Keyword(4) MLSE
1st Author's Name Shinsuke Uchida
1st Author's Affiliation Doshisha University()
2nd Author's Name Hideichi Sasaoka
2nd Author's Affiliation Doshisha University
Date 2001/4/12
Paper # RCS2001-11,CQ2001-11
Volume (vol) vol.101
Number (no) 12
Page pp.pp.-
#Pages 7
Date of Issue