Performance Analysis of Frequency Diversity Scheme for OFDM Systems Using Sub-channel Correlation Characteristics 


Vol. 29,  No. 6, pp. 614-622, Jun.  2004


PDF
  Abstract

In this paper, we propose the frequency diversity scheme for performance improvement of a OFDM system without decreasing the spectral efficiency. In the proposed scheme, information bit is encoded to symbol by a simple procedure, and the encoded symbol is transmitted through the two lowest correlated sub-channels with the particular phase difference. At the receiver, a frequency diversity gain is obtained by a simple signal processing. We also suggest optimum phase difference value to minimize the performance degradation which resulted from a phase difference estimation error and bit/symbol mapping method to minimize BER. As results, at the point of performance improvement, the proposed scheme is excellent even though it requires a little increase of system complexity because of an additional encoding and decoding. In particular, we confirmed through computer simulation that on the same channel environment and bandwidth efficiency, the 2Tx/1Rx STBC-OFDM system adopting the proposed frequency diversity scheme outperforms the conventional 2Tx/1Rx STBC-OFDM system. performance

  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]

J. Yi, J. Kim, C. Oh, S. Cho, "Performance Analysis of Frequency Diversity Scheme for OFDM Systems Using Sub-channel Correlation Characteristics," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 6, pp. 614-622, 2004. DOI: .

[ACM Style]

Jong-Sik Yi, Jang-wook Kim, Chang-hoen Oh, and Sung-jun Cho. 2004. Performance Analysis of Frequency Diversity Scheme for OFDM Systems Using Sub-channel Correlation Characteristics. The Journal of Korean Institute of Communications and Information Sciences, 29, 6, (2004), 614-622. DOI: .

[KICS Style]

Jong-Sik Yi, Jang-wook Kim, Chang-hoen Oh, Sung-jun Cho, "Performance Analysis of Frequency Diversity Scheme for OFDM Systems Using Sub-channel Correlation Characteristics," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 6, pp. 614-622, 6. 2004.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880