Reduced-complexity multiple-input, multiple-output detection

Details Reduced-complexity multiple-input, multiple-output detection Reduced-complexity multiple-input, multiple-output detection

2009-07-24

2011-12-13

Flores, Leon (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S262000, C375S316000, C375S340000, C714S794000, C714S795000, C714S796000

Reexamination Certificate

active

08077812

ABSTRACT:
A wireless receiver detects signals generated with a multiple-input, multiple-output (MIMO) transmitter. The receiver applies maximum-likelihood detection (MLD) for soft-output signal detection, where an MLD exhaustive search across all candidate vectors is performed recursively by computing and accumulating the differences between, for example, the Euclidean metrics of consecutive candidate tests. Difference terms used for the accumulation are also calculated recursively. An ordering of candidates, such as by a triangular-waveform shaped ordering, is employed such that only one candidate variable is changed between any two consecutive candidate evaluations, leading to a reduced set of computations.

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