Performance Improvement Technique for an OFDM System without Guard Interval 


Vol. 30,  No. 5, pp. 382-388, May  2005


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  Abstract

An OFDM system may be a good candidate for a next-generation wireless communication system which requires high-speed and high-rate data transmission. In OFDM systems, guard intervals are inserted to mitigate the effects of ISI (Inter-Symbol Interference). But guard interval insertion degrades the system performance from the standpoint of data rate and bandwidth efficiency. In this paper, a new method to improve the performance of an OFDM system without guard interval. First, PIC (Parallel Interference Cancellation) scheme which can reduce ISI by subtracting the estimated multi-path components from the received signal will be considered. And the proposed system with Pseudo-Decorrelator estimates transmitted signals by using the inverse matrix of crosscorrelation matrix relating to interference components. The performance of the proposed system is evaluated through computer simulations and compared with that of the PIC system and an OFDM system without guard interval.

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  Cite this article

[IEEE Style]

S. Kim, J. Park, G. Choi, "Performance Improvement Technique for an OFDM System without Guard Interval," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 5, pp. 382-388, 2005. DOI: .

[ACM Style]

Sung-Hoon Kim, Joong-Hoo Park, and Gin-Kyu Choi. 2005. Performance Improvement Technique for an OFDM System without Guard Interval. The Journal of Korean Institute of Communications and Information Sciences, 30, 5, (2005), 382-388. DOI: .

[KICS Style]

Sung-Hoon Kim, Joong-Hoo Park, Gin-Kyu Choi, "Performance Improvement Technique for an OFDM System without Guard Interval," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 5, pp. 382-388, 5. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880