Resources Contact Us Home
Sphere decoder and decoding method thereof

Image Number 4 for United States Patent #8117522.

A sphere decoder sets a Euclidean distance between a lattice vector obtained by using an MMSE or ZF estimate and a received signal as an initial radius, further reduces the initial radius, and searches lattices points included inside a hypersphere with the further reduced initial radius. In addition, one lattice vector having a minimum Euclidean distance is output. One dimension is selected to reduce an initial radius, and estimates in other dimensions are kept fixed, excluding the selected dimension. Then candidate lattice points are searched in the selected dimension, excluding a current estimate, such that a minimum Euclidean distance and a lattice point estimate corresponding to the minimum Euclidean distance are obtained. The initial radius is updated by the minimum Euclidean distance, and a final lattice vector is constructed by combining a lattice point estimate corresponding to the initial radius and the lattice point estimates in other dimensions.

  Recently Added Patents
Linear jet ionizer
High sensitivity stress sensor based on hybrid materials
Serial transmission system including transmitter apparatus and receiver apparatus, for use in transmission of AV data
Display screen or portion thereof with animated graphical user interface
Under bump passive components in wafer level packaging
Removable case
  Randomly Featured Patents
Clock generator, semiconductor device, and clock generating method
Demulsifier composition and method of use thereof
LCD device having electronic formed within concave portion of a reflector
Head-up display device
Ureteral stent
Pressure sensitive label dispenser
Method for monitoring the tire pressure on vehicles
Vehicle interference prevention device
Network aware process scheduling