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Digital Communication


Many communication systems employ multi-channels that transmit and receive a common signal. In these systems, the common signal is combined at the receiver to achieve maximum channel capacity. During the combining of such signals the delay and phase parameters are estimated based on a convolution decoding operation and are removed from the signal. At low signal to noise ratios these parameters become difficult to estimate and impractical to implement.


The combination of these two Sandia technological advances introduce a new method whereby the channel parameters are estimated and removed simultaneously using a convolutional decoding operation, while being combined by the receiver. This new method allows for the signal combing to occur at low signal to noise ratios which improves the over all channel capacity without losing functionality.


  • Improvement of Overall Channel Capacity
  • Improved Signal to Noise Ratio
  • Simplification of Signal Receiving Method

Applications and Industries

  • Satellite Communication Systems
  • Cellular Communication Systems
  • GPS

Intellectual Property

ID Number
Patent Number
Using convolutional decoding to improve time delay and phase estimation in digital communications 7376.0 7,653,155 01/26/2010
Concurrent signal combining and channel estimation in digital communications 10115.0 8,009,772 08/30/2011
Technology IDSD#7376 Development StagePrototype - Sandia estimates this technology at approximately a Technology Readiness Level 5. Key elements demonstrated in relevant environments.AvailabilityAvailable - Various licensing and partnering options are available. Please contact the Intellectual Property department to discuss. Published12/01/2011Last Updated10/31/2016