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This paper presents a pipelined MIMO detector designed for 4×4 16-QAM spatial multiplexing systems. A modified Dijkstra's algorithm and a pre-calculation technique are proposed to improve the throughput up to 2.6Gb/s, and the Euclidean norm computation is approximated to reduce the chip area without degrading the error-rate performance. The entire detector occupies 1.56mm2 in a 0.18μm CMOS process,...
This paper presents a low power VLSI implementation of a novel Multiple-Input Multiple-Output (MIMO) decoder which combines Fixed Complexity Sphere Decoder (FSD) algorithm, real-valued lattice formulation and Pair-wise sorted QR decomposition (P-SQRD) searching approach to simultaneously improve the throughput, bit error rate (BER) and complexity. Two-stage approximate sorting scheme with minimum...
This paper presents a multiple-input multiple-output (MIMO) decoder which combines fixed complexity sphere decoder (FSD) algorithm with a new real-valued lattice formulation to simultaneously improve the throughput, bit error rate (BER), complexity and power. A pair-wise sorted QR decomposition (P-SQRD) approach is also introduced to enhance the lattice searching efficiency and BER while preserving...
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