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Frequency Diversity of BICM-OFDM with Extended Interleaving  

Choi, Min-Cheol (Hong-Ik University)
Kim, Chang-Joong (Hong-Ik University)
Lee, Ho-Kyoung (Hong-Ik University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.7, 2010 , pp. 102-108 More about this Journal
Abstract
In this paper, we analyse the frequency diversity of BICM-OFDM with extended interleaving. The extended interleaving is an interleaving which is added to the existing BICM-OFDM system to extends the interleaving depth by times to the previous interleaving depth. Using the extended interleaving, the diversity order of the proposed system over -tap frequency selective channels is increased from min($d_{free}$, L) to min($d_{free}$, KL), where $d_{free}$ is minimum Hamming distance of the convolutional code. Simulation is also performed to show that the performance of the proposed system is better than that of the existing system even if the channel is an on-off channel in which the number of multi-paths is varying.
Keywords
BICM-OFDM; frequency diversity; interleaving;
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