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Non-overlapped interleaving for space-frequency trellis coded OFDM systems in frequency selective fading channel
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- Authors
- Issue Date
- 2003-07
- Citation
- 대한전자공학회 하계종합학술대회 논문집, 제26권 제1호, 2003
- Keywords
- interleaving ; OFDM
- 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.
- Language
- English
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