RAKE Receiver for Time Division Synchronous CDMA Mobile Terminal

  • Xiao Yang (Institute of Information Science, Beijing Jiaotong University) ;
  • Lee Kwang-Jae (Dept. of Multimedia, Information and Telecommunication, Hanlyo University) ;
  • Lee Moon-Ho (Dept. of Information and Communication, Chonbuk National University)
  • Published : 2006.03.01

Abstract

For the sake of the potential ability of overcoming interference in TD-SCDMA(time division-synchronous code division multiple access) systems, pilot signal is adopted, but the presented TD-SCDMA protocol has not considered the Rake technique for their mobile terminals. This paper developed a RAKE receiver algorithm and an implementation circuit, which make use of the pilot signal in the burst structure of the TD-SCDMA base station to estimate main channel parameter(channel delays) in the downlink of TD-SCDMA wireless network. The algorithm can reduce multipath interference for the mobile units in multiusers' case. Theoretic performance analysis presented in the paper and computer simulations show that there is a range of BER for Rake receiver and confirm that the proposed RAKE receiver algorithm achieved a better performance under multipath fading propagation and multiusers conditions.

Keywords

References

  1. White Paper: TD-SCDMA: the Solution for TDD bands, Siemens AG, Apr. 2001
  2. CWTS TSM 01.01 V3.0.0(2002-08), China Wireless Telecommunication Standard; 3 G digital cellular telecommunications system; TSM Release 3 Specifications(Release 3) [S]
  3. R. Esmailzadeh, E. Sourour, and M. Nakagawa, 'PreRAKE diversity combining in time-division duplex CDMA mobile communications', IEEE Transactions on Vehicular Technology, vol. 48, no. 3, pp. 795-801, May 1999 https://doi.org/10.1109/25.764996
  4. Y. Song, Y. Xiao, 'The performance of pre-RAKE diversity combining based on QPSK modulation in TDD-CDMA mobile communications', In: Proc. of 6th International Conference on Signal Processing (ICSP'02), Beijing, pp. 1351-1354, 2002
  5. Y. Xiao, Y. Song, 'Pre-Rake diversity combining in TD-SCDMA mobile communications', Journal of the China Railway Society, vol. 25, no. 5, pp. 39-44, 2003
  6. Y. Xiao, W. Yao, 'A RAKE receiver for TD-SCDMA mobile terminals', 2004 IEEE 59th Vehicular Technology Conference, vol. 2, pp. 1228-1232, May 2004
  7. Romano Fantacci, Andrea Galligani, 'An efficient RAKE receiver architecture with pilot signal cancellation for downlink communications in DS-CDMA indoor wireless network', IEEE Transactions on Communications, vol. 47, no. 6, pp. 823-827, Jun. 1999 https://doi.org/10.1109/26.771337
  8. C. Tao, C. Tellambura, 'Optimization of pilot symbol-assisted RAKE receivers for DS-CDMA systems [cellular systems]', IEEE Global Telecommunications Conference, GLOBECOM '04. 29, vol. 2, pp. 1056-1060, Nov.-Dec. 2004
  9. H. Andoh, M. Sawahashi, and F. Adachi, 'Channel estimation using time multiplexed pilot symbols for coherent RAKE combining for DS-CDMA mobile radio', The 8th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 'Waves of the Year 2000', PIMRC '97, vol. 3, pp. 954-958, Sep. 1997
  10. C. D'Amours, M. Moher, and A. Yongaloglu, 'Comparison of pilot symbol-assisted and differentially detected BPSK for DS-CDMA systems employing RAKE receivers in Rayleigh fading channels', IEEE Transactions on Vehicular Technology, vol. 47, no. 4, pp. 1258-1267, Nov. 1998 https://doi.org/10.1109/25.728515
  11. K. Higuchi, H. Andoh, K. Okawa, M. Sawahashi, and F. Adachi, 'Experimental evaluation of combined effect of coherent RAKE combining and SIR-based fast transmit power control for reverse link of DS-CDMA mobile radio', IEEE Journal on Selected Areas in Communications, vol. 18, no. 8, pp. 1526-1535, Aug. 2000 https://doi.org/10.1109/49.864016
  12. M. Abou-Khousa, M. El-Tarhuni, 'SIR-based RAKE receiver finger assignment algorithm', 10th IEEE International Conference on Electronics, Circuits and Systems, vol. 2, pp. 639-642, Dec. 2003