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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Performance Improvement of A Hybrid TDMA/CDMA Systems with Multi-channel Linear Equalizer

다중채널 선형등화기를 이용한 혼합 TDMA/CDMA 시스템의 성능개선

  • Published : 2000.09.01
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Abstract

In this paper we studied for multi-user detection system, which hold the merit of CDMA system and can enhance the system capacity. We designed actually realizable quasi-optimal multiuser detection system by use of linear equalizer on the concept that multiuser detection algorithm can be reduced by combining TDMA with CDMA. we call this the hybrid TDMA/CDMA system. And we proposed multiuser detection system, which can use PSAD and MSDD channel estimation method. As a result of performance analysis we acquired equal or much better performance by use of linear multichannel equalizer in the case of not so many user. And on the occasion of many user within cell we can also acquired much better performance in comparison with conventional single user detection system by use of hybrid TDMA/CDMA system.

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References

  1. IEEE Trans. Info. Theory v.IT-32 no.1 Minimum Probability of Error for Asynchronous Gaussian Multiple-Access Channels S. Verdu
  2. Proc. IEEE GLOBECOM Linear Multiuser Detector Update in Synchronous Dynamic CDMA Systems Markku J. Junitti
  3. IEEE Trans. on Info. Theory v.35 no.1 Linear Multiuser Detectors for synchronous Code-Division Multiple-Access channels R. Lupas;S. Verdu
  4. Proc. 25th Conf. on Decision and Control Asymptotic Efficiency of Linear Multi-User Detectors R. Lupas-Golaszewiski;S. Verdu
  5. MUD-CDMA, Proceedings of ISSSTA96 conference v.1 Design of a 3rd Generation Multirate CDMA System with Multiuser Detection T. Ojanpera(et al.)
  6. Proceedings of VTC97 v.2 Multiuser Detection for Downlink CDMA Communications in Multipath Fading Channels R. Wichman;A. Hottinen
  7. Proceedings of PIMRC97 Cellular Coverage Analysis of Wideband MUD-CDMA System H. Holma;A. Toskala;T. Ojanpera
  8. Proceedings of ACTS Mobile Summit Conference v.1 A comparative Study of Hybrid Multiple Access Schemes for UMTS T. Ojanpera(et al.)
  9. IEEE A TDMA-CDMA Cellular System F. Hendessi(et al.)
  10. Spatial Processing for High Tie Wireless Systems v.IM-558 J. C. Liberti
  11. IEEE Trans. Comm. v.40 Error Perormance of Multiple-Symbol Differential Detection of PSK Signals Transmitted over Correlated Rayleigh Fading Channels P. Ho;D. Fung
  12. IEEE Transaction on Vehicular Technology v.40 An Analysis of Pilot Symbol Assisted Modulation for Rayleigh Fading Channels J. K. Cavers
  13. Digital Communications(3rd Edtion) J. G. Proakis
  14. Multiuser Detection S. Verdu