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Multiple-Input-Multiple-Output communication systems demand fast sphere decoding with high performance. We propose a high throughput soft-output fixed complexity sphere decoder (PFSD) that is parallel and has comparable performance to list fixed complexity sphere decoder (LFSD) and K-best sphere decoder. In addition, we propose a parallel QR decomposition algorithm to lower the preprocessing overhead,...
In this paper, a VLSI architecture of a reduced-complexity K-best sphere decoder is designed, which aims to solve the 4 × 4 64-QAM multiple-input multiple-output (MIMO) signal detection problems in high-speed applications. We propose a fully-pipelined sorter, which can generate one result per clock cycle and thus greatly enhance the detection throughput. On the other hand, various K values are adopted...
This paper presents a field-programmable gate array (FPGA) implementation of an unbiased minimum mean square error (MMSE) metric based QR-decomposition M (QRDM) algorithm for the multiple-input multiple-output (MIMO) systems. Two advanced techniques, namely the merge-sort (MS) based and winner path expansion (WPE) based sorting schemes have been implemented and validated on an FPGA platform for a...
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