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Novel Technique for Obtaining Diversity Gain Using Symbol Share In OFDM Systems  

Kang, Jae-Won (Department of Electrical and Electronic Engineering, Yonsei University)
Park, Jin-Bae (Department of Electrical and Electronic Engineering, Yonsei University)
Hwang, Hae-Gwang (Department of Electrical and Electronic Engineering, Yonsei University)
Kim, Kwang-Soon (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.12, 2010 , pp. 1-7 More about this Journal
Abstract
In this paper, the technique for obtaining diversity gain without increasing the antenna is proposed using symbol share in the OFDM systems. Proposed technique groups symbols which are mapped into different sub-carriers and these symbols are modulated by proposed constellation. Proposed constellation has the identical minimum distance with QPSK modulation constellation and obtain more frequency diversity gain. Also, proposed modulation scheme make it possible to increase data rate using subcarriers allocated symbols.
Keywords
OFDM; Symbol Sharing; Diversity; Sub-carrier; Frequency selective channel; Null symbol;
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