Improved Downlink Performance of Transmit Adaptive Array applying Transmit Antenna Selection 


Vol. 28,  No. 3, pp. 111-118, Mar.  2003


PDF Full-Text
  Abstract

The transmit adaptive array requires the forward link channel information for evaluating the optimum transmit weight vector in which a feedback channel provides transmitter with the forward link channel information. The larger transmit adaptive array is, the higher required rate of feedback channel is. Therefore we consider the system that the N-transmit antenna system is expanded to the 2N-transmit antenna system, while the feedback channel is maintained as that of N-transmit antenna system. The increase of the number of antennas can produce the additional diversity gain, however the insufficient feedback bits assigned to each antenna aggravates the quantization error. In this paper, we propose the transmit antenna selection in order to improve the performance of transmit adaptive array having an insufficient feedback channel information. The effective method to transmit the weight vector is also introduced. System performances are investigated for the case of N=4 corresponding to the antenna selection diversity schemes on the flat fading channel and the multipath fading channel. The simulation results show that the proposed scheme can improve the system performance by 1 dB when the N is expanded to the 2N, while the feedback channel is restricted to that of N-transmit antenna system.

  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]

C. Ahn and D. Kim, "Improved Downlink Performance of Transmit Adaptive Array applying Transmit Antenna Selection," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 3, pp. 111-118, 2003. DOI: .

[ACM Style]

Cheol-Yong Ahn and Dong-Ku Kim. 2003. Improved Downlink Performance of Transmit Adaptive Array applying Transmit Antenna Selection. The Journal of Korean Institute of Communications and Information Sciences, 28, 3, (2003), 111-118. DOI: .

[KICS Style]

Cheol-Yong Ahn and Dong-Ku Kim, "Improved Downlink Performance of Transmit Adaptive Array applying Transmit Antenna Selection," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 3, pp. 111-118, 3. 2003.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880