Low power soft-output signal detector design for wireless MIMO communication systems
ISLPED '07 Proceedings of the 2007 international symposium on Low power electronics and design
High throughput VLSI architecture for soft-output mimo detection based on a greedy graph algorithm
Proceedings of the 19th ACM Great Lakes symposium on VLSI
Algorithm and implementation of the K-best sphere decoding for MIMO detection
IEEE Journal on Selected Areas in Communications
Soft-output sphere decoding: algorithms and VLSI implementation
IEEE Journal on Selected Areas in Communications
VLSI implementation of a fixed-complexity soft-output MIMO detector for high-speed wireless
EURASIP Journal on Wireless Communications and Networking
Implementation of sphere decoder for MIMO-OFDM on FPGAs using high-level synthesis tools
Analog Integrated Circuits and Signal Processing
Parallel High Throughput Soft-Output Sphere Decoding Algorithm
Journal of Signal Processing Systems
High-throughput soft-output MIMO detector based on path-preserving trellis-search algorithm
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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In this paper a VLSI architecture of a high throughput and high performance soft-output (SO) MIMO detector (the recently presented Layered ORthogonal Lattice Detector, LORD) is presented. The baseline implementation includes optimal (i.e. maximum-likelihood -- ML -- in the max-log sense) SO generation. A reduced complexity variant of the SO generation stage is also described. To the best of the authors' knowledge, the proposed architecture is the first VLSI implementation of a max-log ML MIMO detector which includes QR decomposition and SO generation, having the latter a deterministic very high throughput thanks to a fully parallelizable structure, and parameterizability in terms of both the number of transmit and receive antennas, and the supported modulation orders. The two designs achieve a very high throughput making them particularly suitable for MIMO-OFDM systems like e.g. IEEE 802.11n WLANs: the most demanding requirements are satisfied at a reasonable cost of area and power consumption.