A Design of IFFT Processor for Reducing OFDM Transmitter Latency 


Vol. 34,  No. 12, pp. 1167-1176, Dec.  2009


PDF
  Abstract

In This Paper, we introduce an efficient IFFT design technique named for transmitter of OFDM (Orthogonal Frequency Division Multiplexing) system. In OFDM system, a cyclic prefix is inserted in forepart of OFDM symbol to prevent ICI(Inter-channel Interference) and ISI (Inter-symbol Interference). Attaching cyclic prefix causes delay in storing and copying IFFT result. The proposed IFFT removes this delay because its output is cyclic shifted by the length of cyclic prefix. So we can make a complete OFDM symbol by just copying the forepart of IFFT output to the end. In many cases, the length of cyclic prefix is 1/2n of FFT size, and this IFFT does not require additional hardware complexity and it does not cause any performance degradation.

  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. Kim, Y. Park, W. Kim, "A Design of IFFT Processor for Reducing OFDM Transmitter Latency," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 12, pp. 1167-1176, 2009. DOI: .

[ACM Style]

Jun-Woo Kim, Youn-Ok Park, and Whan-Woo Kim. 2009. A Design of IFFT Processor for Reducing OFDM Transmitter Latency. The Journal of Korean Institute of Communications and Information Sciences, 34, 12, (2009), 1167-1176. DOI: .

[KICS Style]

Jun-Woo Kim, Youn-Ok Park, Whan-Woo Kim, "A Design of IFFT Processor for Reducing OFDM Transmitter Latency," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 12, pp. 1167-1176, 12. 2009.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880