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- W2158439145 abstract "This paper presents the architecture and circuit design of a sphere decoder for agile multi-input multi-output (MIMO) communication systems. Algorithm and architecture co-design is used to reduce hardware complexity, which enables the proposed sphere decoder to support larger antenna-array sizes and higher order modulations. The proposed architecture is also capable of processing multiple frequency subcarriers for orthogonal frequency-division multiplexing (OFDM) based systems. A 20 times area reduction is achieved, even without interleaving of subcarriers compared to the direct-mapped architecture. The sphere decoder supports multiple configurations: antenna arrays from 2 times 2 to 16 times 16, constellation sizes from binary phase-shift keying (BPSK) to 64-QAM (quadrature-amplitude modulation), and 16-128 subcarriers. The peak estimated data rate exceeds 1.5 Gbits/s of ideal throughput in a 16-MHz bandwidth. The core area is estimated at 0.31 mm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> in a standard 90-nm CMOS technology. The estimated power consumption is 33 mW in the 16 times 16 64-QAM mode at 256 MHz from a 1-V supply voltage." @default.
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- W2158439145 date "2009-10-01" @default.
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- W2158439145 title "A Flexible DSP Architecture for MIMO Sphere Decoding" @default.
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- W2158439145 doi "https://doi.org/10.1109/tcsi.2008.2012210" @default.
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