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Senning, Christian; Bruderer, Lukas; Hunziker, Josua; Burg, Andreas
IEEE transactions on circuits and systems. I, Regular papers, 06/2014, Letnik: 61, Številka: 6Journal Article
In this paper, a VLSI implementation of a complete MIMO channel equalization ASIC based on lattice reduction-aided linear detection is presented. The architecture performs preprocessing steps at channel rate and low-complexity linear data detection at symbol rate. Preprocessing is based on Seysen's algorithm for lattice reduction. We present algorithmic improvements of the lattice reduction preprocessing in terms of area and throughput of the VLSI implementation with minor impact on the error-rate. Due to the low-complexity implementation of the lattice reduction-aided data detection stage, our architecture is able to achieve very low power in typical packet-based MIMO wireless data transmission scenarios. The final 90 nm CMOS ASIC achieves an energy efficiency for the detection of 24 pJ/bit at a throughput of 720 Mbps with near-optimal error-rate performance.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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