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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

A Multicarrier CDMA System Using Divided Spreading Sequence for Time and Frequency Diversity

시간 주파수 다이버시티를 위한 분할된 확산코드를 이용한 멀티캐리어 CDMA 시스템

  • 박형근 ((주)현대시스콤 시스템 그룹) ;
  • 주양익 (고려대학교 전자공학과 차세대 이동통신 연구실) ;
  • 김용석 (고려대학교 전자공학과 차세대 이동통신 연구실) ;
  • 차균현 (고려대학교 전자공학과 차세대 이동통신 연구실)
  • Published : 2002.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes a new multicarrier code division multiple access (CDMA) system. The proposed multicarrier CDMA system provides the advantages that the transmission bandwidth is more efficiently utilized by using divided spreading sequence, time and frequency diversity is achieved in frequency selective nultipath (acting channel, and inter-carrier interference (ICI) can be minimized by using specific data and code pattern. In this system, transmitted data bits are serial-to-parallel converted to some parallel branches. On each branch each bit is direct-sequence spread-spectrum modulated by divided spreading sequences and transmitted using orthogonal carriers. The receiver providers a Rake for each carrier, and the outputs of Rakes are combined to get time and frequency diversity. This multicarrier CDMA system allows additional flexibility in the choice of system parameters. Upon varying system parameters, bit error rate (BER) performance is examined for the proposed multicarrier CDMA system. Simulation results show that the proposed multicarrier CDMA scheme can achieve better performance than the other types of conventional multicarrier CDMA systems.

Keywords

References

  1. IEEE communication Magazine Overview of multicarrier CDMA S. S. Hara;R. Prasad
  2. IEEE Trans. Comm. v.34 no.7 Analysis and simulation of A digital Mobile channel using orthogonal frequency division multiplexing L. J. Cimini
  3. Proc. IEEE PIMRC93 Multicarrier CDMA in indoor wireless radio networks N. Yee;J-P. Linnartz;G. Ffettweis
  4. Proc. IEEE PIMRC94 On the performance of convolutionally-coded CDMA/ OFDM for mobile communications system K. Fazel;L. Papke
  5. Proc. IEEE GLOBECOM93 Orthogonal multicarrier techniques applied to direct sequence spread spectrum CDMA systems A. Chouly;A. Brajal;S. Joudan
  6. Proc. IEEE ICUPC93 Performance of orthogonal CDMA codes for quasi-synchronous communications systems V. M. DaSilva;E. S. Sousa
  7. Proc. IEEE First Symposium of Communications and Vehicular Technology Multitone direct sequence CDMA system in an indoor wireless environment L. Vandendorpe
  8. OFDM for Wireless Multimedia Communications Richard van Nee;Ramjee Prasad
  9. IEEE J. Select. Areas Commun. v.10 no.4 analysis of a multiple cell direct sequence CDMA cellular mobile radio system G. L. Stuber;C. Kchao https://doi.org/10.1109/49.136062
  10. IEEE J. Select. Area Commun. v.SAC-5 no.2 Direct sequence spread spectrum receiver for communication on frequency selective fading channels H. Ochsner
  11. IEEE trans. Commun. v.47 no.1 Joint multipath-Doppler diversity in mobile wireless communications Akbar M. Sayeed;Behnaam Aazhang https://doi.org/10.1109/26.747819
  12. Wireless Communication: The interactive Multi-Media CD-ROM, Edition J. P. Linnartz(at al.)
  13. IEEE trans. Commun. v.44 no.3 Performance of orthogonal multicarrier CDMA in a multipath fading channel E. Sourour;M. Nakagawa https://doi.org/10.1109/26.486330