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IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2008 E91-A(5):1293-1295; doi:10.1093/ietfec/e91-a.5.1293
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Communication Theory and Signals

Performance of Multiband OFDM Systems with Extra Diversity

Jee-Hyun KIM1, Sang-Tae KIM2, Hyoung-Kyu SONG1 and Young-Hwan YOU1

1 The authors are with the uT Communication Research Center, Sejong University, Korea. E-mail: yhyou{at}sejong.ac.kr, 2 The author is with the Korea Institute of Industrial Technology Evaluation and Planning, Seoul, Korea.


  Abstract

This letter presents the performance of ultra-wideband multi-band orthogonal frequency division multiplexing (UWB MB-OFDM) systems with an extra diversity. To fully obtain diversity gain in the current MB-OFDM system when a time-domain spreading (TDS) is adopted, two consecutive OFDM symbols are designed to be cyclic shifted against each other. Simulation results indicate that the MB-OFDM system using additional frequency diversity outperforms conventional MB-OFDM system.

Key Words: multiband OFDM, ultra-wideband, frequency diversity

Manuscript received May 7, 2007.


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