A Hybrid Scheme of Transmit Adaptive Array and Antenna Selection Diversity for Wideband CDMA Systems 


Vol. 27,  No. 11, pp. 981-989, Nov.  2002


PDF
  Abstract

Transmit diversity schemes are an effective capacity improvement method for down link of Wideband Code Division Multiple Access (W-CDMA) systems. In this paper, we propose to use transmit antenna subset selection scheme in conjunction with closed loop Transmit Adaptive Array (TxAA). The proposed scheme selects N_s optimum antennas among N_T transmit antennas in order to maximize diversity gain from selected antennas, and also reduces the cost of RF chains by employing two different types of RF modules for the selected and the unselected antenna group. Under the same limitation on the amount of feedback information and feedback bandwidth as of the 3GPP specitications, the proposed scheme always outperforms the conventional closed loop TxAA with N_s antennas for all the mobile speeds. Moreover, the proposed scheme also shows better results than the TxAA with all the N_T antennas in realistic situations considering feedback delay, feedback bandwidth limitation and quantization.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

H. Kim, W. Lee, Y. Shin, "A Hybrid Scheme of Transmit Adaptive Array and Antenna Selection Diversity for Wideband CDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 11, pp. 981-989, 2002. DOI: .

[ACM Style]

Hak-Seong Kim, Woncheol Lee, and Yoan Shin. 2002. A Hybrid Scheme of Transmit Adaptive Array and Antenna Selection Diversity for Wideband CDMA Systems. The Journal of Korean Institute of Communications and Information Sciences, 27, 11, (2002), 981-989. DOI: .

[KICS Style]

Hak-Seong Kim, Woncheol Lee, Yoan Shin, "A Hybrid Scheme of Transmit Adaptive Array and Antenna Selection Diversity for Wideband CDMA Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 11, pp. 981-989, 11. 2002.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880