KSII Transactions on Internet and Information Systems (TIIS)
- Volume 2 Issue 5
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- Pages.253-264
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- 2008
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- 1976-7277(pISSN)
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- 1976-7277(eISSN)
DOI QR Code
A Linear Precoding Technique for OFDM Systems with Cyclic Delay Diversity
- Hui, Bing (The Graduate School of Information Technology & Telecommunications, Inha University) ;
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Chang, Kyung-Hi
(The Graduate School of Information Technology & Telecommunications, Inha University)
- Published : 2008.10.25
Abstract
Cyclic delay diversity (CDD) is considered a simple approach to exploit the frequency diversity, to improve the system performance in orthogonal frequency division multiplexing (OFDM) systems. Also, the linear precoding technique can significantly improve the performance of communication systems by exploiting the channel state information (CSI). In order to achieve enhanced performance, we propose applying linear precoding to the conventional CDD-OFDM transmit diversity schemes over Rayleigh fading channels. The proposed scheme works effectively with the accurate CSI in time-division-duplex (TDD) OFDM systems with CDD, where the reciprocity is assumed instead of channel state feedback. For a BER of
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