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
Method and system for remote delivery of email
Switchable solvents and methods of use thereof
Post-processing including median filtering of noise suppression gains
Noise spectrum tracking in noisy acoustical signals
Food-grade flour from dry fractionated corn germ and collet composition and method for producing same
Dual protocol input device
Headset systems and methods
  Randomly Featured Patents
Counterbalance weight device
Standing support
Grinding wheel having core body coated with impermeable coating
Sealing system for a valve having biassed sealant under pressure
Cathode ray tube tension mask made of magnetostrictive material with compensation for terrestrial magnetism
Systems and components for detecting electromagnetic radiation and displaying images produced thereby
Method of producing hollow fiber polymer membranes
Method for document viewing
Real-time data processing system
Langasite-type crystals and a method for manufacturing the same