한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

  • 제29권5A호
  • /
  • Pages.537-544
  • /
  • 2004
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  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

비선형 육상 이동 위성방송 환경에서 DS-CDM-SQAM의 성능 연구

A Study on the Performance of DS-CDM-SQAM in Nonlinear Land Mobile Satellite Broadcasting Environments

  • 발행 : 2004.05.01
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초록

In this paper, we p개pose DS-CDM-SQAM(Superposed Quadrature Amplitude Modulation) which is characterized by its smooth phase transition and small envelope fluctuation, and improves the power efficiency as compared to DS-CDM-QPSK of satellited-based DMB system(ITR-R BO.1130-4 System E) in a nonlinearly amplified channel. Computer simulation results show that the proposed DS-CDM-SQAM improves Eb/No by 1.7㏈ to maintain BER=1${\times}$$10^{-3}$ in nonlinearly amplified multipath mobile radio environments. Therefore, the proposed DS-CDM-SQAM system significantly improves the power efficiency in nonlinear land mobile satellite DMB environments.

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참고문헌

  1. Recommendation ITU-R BO. 1130-4 Systems for digital satellite broadcasting to vehicular portable and fixed receivers in the bands allocated to BSS(sound) in the frequency range 1400-2700MHz
  2. IEEE Trans. on Comm. v.COM-33 SQAM : A New superposed QAM modem technique J.S.Seo;K.Feher
  3. IEEE Trans. on Comm. v.COM-29 no.11 Frequency-Independent and Frequency-Dependent Nonlinear Models of TWT Amplifiers A.M.Saleh
  4. IEE Electronics Letters v.33 no.22 Low complexity receiver for rate variable SQAM modem J.S.Seo;Il-Keum Park https://doi.org/10.1049/el:19971294
  5. ITU-R M.1225 Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000
  6. Bell System Technical Journal Adaptive linearization of power amplifiers in digital radio systems A.M.Saleh;J.Salz
  7. IEEE GLOBCOM'93 v.3 Influence of Nonlinear HPA on Trellis-Coded OFDM for Terrestrial Broadcasting of Digital HDTV E.Bogenfeld(et al.)
  8. IEEE JSAC v.SAC-1 A new baseband linearizer for more efficient utilization of earth station amplifiers used for QPSK transmission H.Girard;K.Feher