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Keshab K. Parhi: Patents and Patent Applications


Issued Patents

  1. J. Chen and K.K. Parhi, "System for FEXT Cancellation of Multi-Channel Transceivers with Precoding," US Patent 8,699,551, Issued April 15, 2014
  2. J. Chen and K.K. Parhi, "System for low complexity adaptive ECHO and NEXT cancellers," US Patent 8,600,039, Issued Dec. 3, 2013
  3. J. Chen and K.K. Parhi "System for MIMO equalization of multi-channel transceivers with precoding," US Patent 8,498,343, Issued July 30, 2013
  4. O.E. Agazzi, G. Ungerboeck, K.K. Parhi, C.A. Lutkemeyer, P. Vorenkamp, K.T. Chan, and M.H. Wakayama, "System and method for high speed communications using digital signal processing", US Patent 8,422,591, Issued April 16, 2013
  5. A.E. Cohen and K.K. Parhi "System for secure variable data rate transmission," US Patent 8,416,948, Issued April 9, 2013
  6. K.K. Parhi and Y. Gu, "System and Method for Low-Power Echo and NEXT Cancellers", US Patent 8,009,823, Issued August 30, 2011
  7. O.E. Agazzi, G. Ungerboeck, K.K. Parhi, C.A. Lutkemeyer, P. Vorenkamp, K.T. Chan, and M.H. Wakayama, "System and method for high speed communications using digital signal processing", US Patent 7,933,341, Issued April 26, 2011
  8. K.K. Parhi and Y. Gu, "High-Speed Precoders for Communications Systems", US Patent 7,769,099, Issued August 3, 2010
  9. S.M. Kim, K.K. Parhi, and R. Liu, "System and Method for Designing RS Based LDPC Code Decoder", US Patent 7,716,553, Issued May 11, 2010
  10. Y. Gu and K.K. Parhi, "Parallel Tomlinson Harashima Precoders", US Patent 7,693,233, Issued April 6, 2010
  11. A.E. Cohen and K.K. Parhi, "Low-Complexity Hybrid LDPC Code Encoder", US Patent 7,657,816, Issued Feb. 2, 2010
  12. K.K. Parhi and Y. Gu , "System and Method for MIMO Equalization for DSP Transceivers", US Patent 7,561,633, Issued July 14, 2009
  13. K.K. Parhi, "System and method for generating cyclic codes for error control in digital communications", US Patent 7,539,918, Issued May 26, 2009
  14. K.K. Parhi, J.-G. Chung, K.-C. Lee, K.-J. Cho, "Low-Error Fixed-Width Modified Booth Multiplier," US Patent 7,334,200, Feb. 19, 2008
  15. K.K. Parhi, "Pipelined Parallel Processing of Feedback Loops in a Digital Circuit", US Patent 7,333,580, Issued Feb. 19, 2008
  16. K.K. Parhi and J. Kong, "Low-Latency Architectures for High-Throughput Viterbi Decoders", US Patent 7,308,640, Issued December 11, 2007
  17. K.K. Parhi, "Pipelining of Multiplexor Loops in a Digital Circuit", US Patent 7,239,652, Issued July 3, 2007
  18. Z. Wang and K.K. Parhi, "Area-Efficient Parallel Turbo Decoding", US Patent 7,200,799, Issued April 3, 2007
  19. T. Zhang and K.K. Parhi, "LDPC Code and Encoder/Decoder Regarding Same", US Patent 7,120,856, Issued Oct. 10, 2006
  20. K.K. Parhi, J.-G. Chung and S.-M. Kim, "Low-Error Canonic-Signed-Digit Fixed-Width Multiplier, and Method for Designing Same", US Patent 7,080,115, Issued July 18, 2006
  21. K.K. Parhi, "Pipelined Add-Compare-Select Circuits and Methods, and Applications there of", US Patent 7,020,831, Issued March 28, 2006
  22. W. Freking and K.K. Parhi, "Systolic Ring Planarized Cylindrical Array Modular Multiplier", US Patent 7,010,561, Issued March 7, 2006
  23. K.K. Parhi, J.G. Chung, and K.J. Cho, "Low-Error Fixed-Width Modified Booth Multiplier", US Patent Number 6,978,426, Issued December 20, 2005
  24. W. Freking and K.K. Parhi, "Systolic Cylindrical Array Modular Multiplier", US Patent Numbber 6,907,440, Issued June 14, 2005
  25. K.K. Parhi, "System and Method for Generating Cyclic Codes for Error Control in Digital Communications", US Patent Number 6,895,545, Issued May 17, 2005
  26. W. Freking and K.K. Parhi, "Fast Parallel cascaded Array Modular Multiplier", U.S. Patent Number 6,892,215, Issued May 10, 2005
  27. R.A. Freking and K.K. Parhi, "Fast and Small Serial Huffman Decoder for Decoding at an Optimally High Rate", U.S. Patent Number 6,307,489, October 23, 2001
  28. R.A. Freking and K.K. Parhi, "Concurrent Method for Parallel Huffman Compression Coding and Other Variable Length Encoding and Decoding", U.S. Patent Number 6,304,197, October 16, 2001
  29. R.A. Freking and K.K. Parhi, "Fast and Small Serial Variable Length Encoder with an Optimally High Rate for Encoding Including Huffman Encoding", U.S. Patent Number 6,271,689, August 7, 2001

Pending Patent Applications

Abandoned Patent Applications

  1. M. Ayinala, M.J. Brown, and K.K. Parhi, "Parallel Pipelined Systems for Computing the Fast Fourier Transform," Patent Application 13/136927, Publication 20120041996, Published Feb. 16, 2012
  2. A.E. Cohen and K.K. Parhi, "System for Congestion Control in Packet Networks," Application 12/802271, Publication 20110299400, Published Dec. 8, 2011
  3. C. Cheng and K.K. Parhi, "Hardware-Efficient, Low-Latency Architectures for High Throughput Viterbi Decoders," Application 11/951822, Publication 20080109709, Published May 8, 2008
  4. J.-H. Lin and K.K. Parhi, "Parallelized Binary Arithmetic Coding," Application 11/367041, Publication 20060197689, Published Sept. 7, 2006
  5. K.K. Parhi and Y. Gu, "Pipelined Parallel Decision Feedback Decoders for High-Speed Communications Systems," Application 11/225825, Publication 20060056503, Published March 16, 2006
  6. K.K. Parhi and Y. Gu, "Interleaved Trellis Coded Modulation and Decoding," Application 10/897893, Publication 20050018786, Published Jan. 27, 2006

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