Abstract
This paper introduces a new pilot pattern design for channel estimation in WiMAX. Current WiMAX systems use a subcarrier allocation technique known as Uplink Partial Usage of Subcarriers (UL-PUSC). It is based on tile structure that consists of 4 subcarriers by 3 OFDMA symbols with 4 pilots in the corners to aid the channel estimation process. We propose a new pilot pattern called “transposed UL-PUSC”. It consists of 3 subcarriers by 4 OFDMA symbols. We compare between the performance of the conventional UL-PUSC and our proposed one under different radio channel conditions. We finally propose an adaptive algorithm that selects the optimum pilot pattern based on channel conditions.
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Khattab, M.M., EL-Badawy, H.M., Aboul-Dahab, M.A. (2010). Transposed UL-PUSC Subcarrier Allocation Technique for Channel Estimation in WiMAX. In: Kim, Th., Chang, A.CC., Li, M., Rong, C., Patrikakis, C.Z., Ślęzak, D. (eds) Communication and Networking. FGCN 2010. Communications in Computer and Information Science, vol 119. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17587-9_14
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DOI: https://doi.org/10.1007/978-3-642-17587-9_14
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