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

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

Adaptive CM Array Antenna employing RAKE Receiver in Asynchronous DS-CDMA systems

비동기 DS-CDMA시스템에서 RAKE 수신기를 채용한 적응형 CM 배열 안테나

  • 김용석 (연세대학교 전기전자공학과 통신시스템 연구실) ;
  • 서성진 (텔슨전자 중앙연구) ;
  • 황금찬 (연세대학교 전기전자공학과 통신시스템 연구실)
  • Published : 2004.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, the performance of an adaptive array antenna using Constant Modulus Algorithm (CMA) based on the signal structure for the IMT-2000 3GPP specification reverse link of an asynchronous direct sequence code division multiple access (DS-CDMA) system are evaluated. In addition, the performance is compared with the array antenna using Least Mean Square (LMS) based on the training signal. The simulation parameters such as the number of multipath, mu10pa1h intensity profiles between path, spreading gain and multiuser etc., are considered in the Monte Carlo simulation. Simulation results demonstrate an adaptive array antenna using CMA may give more capacity gain than the amy antenna using LMS in the case of multipath fading channel.

본 논문에서는 IMT-2000 3GPP 규격의 비동기 역방향 링크 DS-CDMA 시스템에서 신호 구조 기반 Constant Modulus Algorithm (U)을 이용하는 적응 배열 안테나 RAKE 시스템의 성능을 평가한다. 또한, 참조 신호 기반 Least Mean Square (LMS)방식을 이용하는 배열 안테나 시스템과 비교한다. Monte Carlo 실험에서 다중경로, 경로간 감쇄지수, 확산이득 다중사용자 둥과 같은 환경 파라미터가 고려된다. 결과로부터 신호 전력을 분산시키는 다중 경로의 경우 CMA을 이용하는 적응 배열 안테나가 LMS를 이용하는 배열 안테나에 비해 더 큰 수용 용량을 얻을 수 있음을 알 수 있다.

Keywords

References

  1. IEICE Trans. on Commun. v.E-79B Multimedia mobile radio access based on coherent DS-CDMA F.Adachi;K.Ohno;A.Higashi;T.Dohi;Y.Okumura
  2. IEEE J. Select. Areas Commun. v.12 Design study for a CDMA-based third generation mobile radio system A.Baier;U.Fiebig;W.Granzow;W.Kocj;P.Teder;J.Thielecke https://doi.org/10.1109/49.286680
  3. IEEE Trans. Veh. Technol. v.49 Sector Beam Synthesis for Cellular Systems Using Phased Antenna Arrays A.Sabharwal;D.Avidor;L.Potter https://doi.org/10.1109/25.892583
  4. IEEE Proc. VTC 2003-Spring v.1 Erlang Capacity of Smart Antenna CDMA System Considering the Sector Operation I.S.Koo;S.C.Bang;J.H.Ahn;K.S.Kim
  5. Proceeding of the IEEE v.85 no.8 Application of Antenna Arrays to Mobile Communication, Part Ⅱ: Beam-Forming and Direction-of-Arrival Considerations L.C.Godara
  6. IEEE Signal Proc. Magazine v.14 no.6 Space-Time Processing for Wireless Communications A.J.Paulraj;C.B.Papadias https://doi.org/10.1109/79.637317
  7. IEEE Personal Commun. v.3 no.5 Smart Antenna Arrays for CDMA Systems J.S.Thompson;P.M.Grant;B.Mulgrew https://doi.org/10.1109/98.542234
  8. IEEE Acoustics, Speech, and Signal Processing Performance of CDMA mobile communication system using antenna arrays B.Suard;A.F.Naguib;G.Xu;A.Paulraj
  9. Electron. Commun. Jpn. v.74 Characteristics of CMA adaptive array for selective fading compensation in digital land mobile radio communications T.Ohgane https://doi.org/10.1002/ecja.4410740905
  10. IEEE Proc. VTC' 95 v.1 Adaptive antennas for third generation DS-CDMA cellular systems G.V.Tsoulos;M.A.Beach;S.C.Swales
  11. Digital Communications J.G.Proakis
  12. Rec. ITU-R M.1225 Guideline for evaluation of radio transmission technologies for IMT-2000
  13. The mobile radio propagation channel D.Parsons
  14. IEEE Trans. Commun. v.44 Comparison of Diversity Combining Techniques for Rayleigh Fading Channels T.E.ng;N.Kong;L.B.Milstein https://doi.org/10.1109/26.536918
  15. Proceeding of 27th Asilomar Conference on Signals, System and Computers Characterization of Fast Fading Vector Channels for Multi-Antenna Communication Systems G.Raleigh;S.N.Diggavi;A.F.Naguib(et al.)
  16. IEEE Trans. Veh. Technol. v.49 Effective Multi-Path Vector Channel Simulator for Antenna Array Systems A.Stephenne;B.Champagne https://doi.org/10.1109/25.901906
  17. IEEE Trans. Inform. Theory v.IT-23 Evaluation of correlation parameters for periodic sequences M.B.Pursley;D.V.Sarvate
  18. International Symposium on Signal Processing and its Application (ISSPA) A CMOE-CMA Rake Receiver Structure for Near-Far Frequencey-Selective Fading CDMA Channels P.Yuvapoositanon;J.A.Chambers
  19. Digital Beamforming in Wireless Communication J.Litva;T.K.Lo
  20. T1e-99029r: The EMC impact of DPCCH gating in packet transmission SAMSUNG
  21. IEEE Proc. ICC 2002 v.3 Reverse Link Capacity and Coverage Improvement for CDMA Cellular Systems Using Polarization and Spatial Diversity L.Aydin;E.Esteves;R.Padovani
  22. TR25.211: Physical channels and mapping of transport channels onto physical channels (FDD)
  23. TR25.213: Spreading and modulation (FDD)
  24. IEEE Trans. Veh. Technol. v.50 Performance of Coherent DS-SS/QPSK for Mobile Communications in Fast-Fading Multipath and High-Frequency offset S.J.Ko;K.H.Lee;H.J.Choi https://doi.org/10.1109/25.917936
  25. IEEE Trans. on Veh. Technol. v.45 A Deterministic Digital Simulation Model for Suzuki Processes with Application to a Shadowed Rayleigh Land Mobile radio Channel M.Patzold;U.killat;F.Laue https://doi.org/10.1109/25.492906