Proceedings ArticleDOI
Low-complexity sorted QR decomposition for MIMO systems based on pairwise column symmetrization
Tae-Hwan Kim
- pp 1281-1286
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TLDR
The proposed algorithm performs the sorted QR decomposition through orthogonalizations based on the modified Gram-Schmidt process, rearranging the column vectors of a real-valued MIMO channel matrix in such a way that the symmetry between the vectors is maintained.Abstract:
This paper presents a low-complexity preprocessing algorithm for multiple-input multiple-output communication systems. The proposed algorithm performs the sorted QR decomposition through orthogonalizations based on the modified Gram-Schmidt process, rearranging the column vectors of a real-valued MIMO channel matrix in such a way that the symmetry between the vectors is maintained. By using the symmetry, the computations required for orthogonalizing one of the two adjacent vectors can be eliminated effectively, which significantly reduces the computational complexity. The reduction rate of the computational complexity by the proposed algorithm is 50% for any MIMO configuration.read more
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References
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Proceedings ArticleDOI
V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel
TL;DR: This paper describes a wireless communication architecture known as vertical BLAST (Bell Laboratories Layered Space-Time) or V-BLAST, which has been implemented in real-time in the laboratory and demonstrated spectral efficiencies of 20-40 bps/Hz in an indoor propagation environment at realistic SNRs and error rates.
Journal ArticleDOI
A fourth-generation MIMO-OFDM broadband wireless system: design, performance, and field trial results
TL;DR: This article describes a multiple-input multiple-output OFDM wireless communication system, lab test results, and field test results obtained in San Jose, California, to establish the performance of MIMO communication systems.
Journal ArticleDOI
VLSI implementation of MIMO detection using the sphere decoding algorithm
TL;DR: Two ASIC implementations of MIMO sphere decoders with efficient implementation of the enumeration approach recently proposed in .
Journal ArticleDOI
Efficient algorithm for decoding layered space-time codes
TL;DR: A new efficient decoding algorithm based on QR decomposition is presented, which requires only a fraction of the computational effort compared with the standard decoding algorithm requiring the multiple calculation of the pseudo inverse of the channel matrix.
Proceedings ArticleDOI
MMSE extension of V-BLAST based on sorted QR decomposition
TL;DR: A novel, computationally efficient algorithm for detecting V-BLAST architectures with respect to the MMSE criterion is presented, which utilizes a sorted QR decomposition of the channel matrix and leads to a simple successive detection structure.
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