S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Others_전기·정보공학부
Non-overlapped interleaving for space-frequency trellis coded OFDM systems in frequency selective fading channel
- Ryu, Jae-Ho; Lee, Yong-Hwan
- Issue Date
- 대한전자공학회 하계종합학술대회 논문집, 제26권 제1호, 2003
- 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.