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World Intellectual Property Organization

Advanced OFDM Signal Detection in Wireless Communication Systems

Strategic Insights

— 1 min read

In the realm of wireless communication systems, accurate detection of transmitted Orthogonal Frequency Division Multiplexing (OFDM) signals is crucial for reliable data transfer. A novel patent published by the World Intellectual Property Organization (WO/2011/101263) presents an innovative approach to detecting OFDM signals in receivers with at least two branches. The invention, attributed to Bengt Lindoff, Bo Lincoln, and Fredrik Nordstrom from Telefonaktiebolaget L M Ericsson (publ), introduces a method that compares the system bandwidth with a predetermined value to determine the detection approach.

Key Takeaways:

  • The patented method determines the system bandwidth associated with the transmitted signal and compares it with a predetermined value to decide on the detection strategy.
  • If the system bandwidth is lower than the predetermined value, the method calculates channel estimates separately for each receiver branch and detects received data symbols using these estimates.
  • If the system bandwidth is higher than the predetermined value, the method calculates a weighted sum of signals from each branch, determines a combined channel estimate, and detects received data symbols using the weighted sum and the combined estimate.
  • The invention enhances the detection of OFDM signals in receivers with multiple branches, improving the overall performance of wireless communication systems.
  • The patent was filed under Application No. PCT/EP2011/051586 on February 3, 2011.
  • The invention has the potential to improve data transfer rates and reduce errors in wireless communication systems.

Statistics:

  • The patented method involves a comparison step (101) to determine the system bandwidth and a subsequent decision-making step (102) to choose the detection approach.
  • The method requires the calculation of channel estimates for each receiver branch (103) if the system bandwidth is lower than the predetermined value.
  • The detection of received data symbols uses the calculated channel estimates and the corresponding received signals (104).
  • The method also involves calculating a weighted sum of signals from each branch and determining a combined channel estimate if the system bandwidth is higher than the predetermined value (105-107).

Sources:

  • WO/2011/101263 - Publication of the invention (Aug 25)
  • PCT/EP2011/051586 - Application number for the patent (February 3, 2011)

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