Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2003.07a
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- Pages.202-205
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- 2003
Non-overlapped interleaving for space-frequency trellis coded OFDM systems in frequency selective fading channel
- Ryu, Jae-Ho (School of Electrical Engineering and INMC Seoul National University) ;
- Lee, Yang-Hwan (School of Electrical Engineering and INMC Seoul National University)
- Published : 2003.07.01
Abstract
The performance of space-frequency trellis coded (SFTC) OFDM system is analyzed in frequency selective fading channel. Using a pairwise error probability upper bound expression, we design the code and interleaver that can maximize the diversity and coding gain. To alleviate the performance degradation due to the inter-antenna product terms, we propose a new SFTC scheme that employs non-overlapped interleaving for each antenna A new code is optimized for the non-overlapped interleaving and a practical sub-optimal decoding algorithm is proposed. It is shown that the proposed scheme can substantially improve the performance compared to the conventional scheme that employs identical interleaving for all antennas.
Keywords