An Improved Fixed Sphere Decoder Employing Soft Decision for the Detection of Non-orthogonal Signals

作者：Xu Tongyang^*; Grammenos Ryan C; Marvasti Farokh; Darwazeh Izzat

来源：IEEE Communications Letters, 2013, 17(10): 1964-1967.

DOI：10.1109/LCOMM.2013.090213.131573

• Multicarrier communications
• spectral efficiency
• OFDM
• SEFDM
• soft decision
• iterative detection
• fixed sphere decoder

This letter proposes a hybrid soft iterative method together with Fixed Sphere Decoding (FSD) concurrently optimize performance and complexity. We show that for bandwidth compression factors of up to 25 percent, we can achieve the same performance as Orthogonal Frequency Division Multiplexing (OFDM). For systems with bandwidth compression higher than 25 percent, the complexity/performance trade-offs of the hybrid method are better than those of Truncated Singular Value Decomposition-FSD (TSVD-FSD).

• 出版日期2013-10