Channel norm-based ordering and whitened decoding for MIMO...

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

Reexamination Certificate

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Reexamination Certificate

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10644489

ABSTRACT:
A channel norm-based ordering and whitened decoding technique (lower complexity iterative decoder) for MIMO communication systems performs approximately the same level of performance as an iterative minimum mean squared error decoder. Decoding a signal vector comprises receiving a signal vector yk, multiplying the received signal vector ykby a conjugate transpose of a channel matrix H*. A column vector zkis generated. The entries of the column vector zkare reordered and an estimated channel matrix {tilde over (H)} is generated. The estimated channel matrix {tilde over (H)} decomposed using a Cholesky decomposition and generating a triangular matrix L. Triangular matrix L is solved backwards and a signal vector {tilde over (s)}kestimated. An estimate of the transmitted symbol vector Ŝkis generated.

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