A new complex sphere detector with SE enumeration |
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Authors: | Heng Yao Haifang Jian Yin Shi |
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Affiliation: | 1. Institute of semiconductors, Chinese Academy of Sciences, Beijing, 100083, China 3. 9B, Science Plaza, 1355 Jinjihu Avenue, Suzhou Industrial Park, Suzhou, 215021, China 2. SmartChip Integration, Suzhou, 215021, China
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Abstract: | Multiple-Input Multiple-Output (MIMO) techniques are promising in wireless communication systems for its high spectral efficiency. Sphere Detector (SD) is favoured in MIMO detection to achieve Maximum-Likelihood (ML) performance. In this paper, we proposed a new SD method for MIMO-Orthogonal Frequency Division Multiplexing (OFDM) systems based on IEEE802.11n, which uses Singular Value Decomposition (SVD) in complex domain to reduce the computation complexity. Furthermore, a new Schnorr-Euchner (SE) enumeration algorithm is also discussed in detail. The computer simulation result shows that the computational complexity and the number of visited nodes can be reduced significantly compared with conventional SD detectors with the same Bit Error Rate (BER) performance. |
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