Resources Contact Us Home
System and method for computing and unordered Hadamard transform

Image Number 8 for United States Patent #6766342.

A system and method for parallel computation of the unordered Hadamard transform. The computing system includes a plurality of interconnected processors and corresponding local memories. An input signal x is received, partitioned into M.sub.1 sub-vectors x.sub.i of length M.sub.2, and distributed to the local memories. Each processor computer a Hadamard transform (order M.sub.2) on the sub-vectors in its local memory (in parallel), generating M.sub.1 result sub-vectors t.sub.i of length M.sub.2, which compose a vector t of length M.sub.1.times.M.sub.2. A stride permutation (stride M.sub.2) is performed on t generating vector u. Each processor computes a Hadamard transform (order M.sub.1) on the sub-vectors u.sub.j in its local memory (in parallel), generating M.sub.1 result sub-vectors v.sub.j of length M.sub.2, which compose a vector v of length M.sub.2.times.M.sub.1. A stride permutation is performed on v (stride M.sub.1) generating result vector w, which is the Hadamard transform of the input signal x.

  Recently Added Patents
Display system, display control method and computer program
Information repository search system
Multifunction switch for vehicle having lighting module
Methods and compositions for wound healing
Method and structure for adding mass with stress isolation to MEMS structures
Soybean sequences associated with the FAP3 locus
  Randomly Featured Patents
Bearing construction of a crankshaft of a cold Pilger rolling mill, or the like
Preparation of 1'-ethoxycarbonyl-oxyethyl esters of penicillins
Ink cartridge
Anti-lock brake control system for motor vehicle and brake force control method therefor
Pulse-density-modulated controller with dynamic sequence
O-ring inspection apparatus
Flexible tube having at least one elongated reinforcing element with a t-shape
Wafer processing techniques for near field magneto-optical head
Humidifier tank
Randomly branched aromatic polycarbonate from triphenol