Patents by Inventor Ann Tsuey Jiuan Wu

Ann Tsuey Jiuan Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Efficient signaling for closed-loop transmit diversity
    Patent number: 8902873
    Abstract: Techniques for encoding a phase adjustment for a feedback signal in a closed-loop transmit diversity system. In an aspect, codewords for the phase adjustments are chosen according to a variable-length prefix code. The prefix code aspect allows the codewords to be transmitted in sequence on the feedback channel without being separated by “commas” or demarcation symbols. The variable-length aspect provides a variety of coarse and fine phase adjustment quantization step sizes to accommodate multiple different channel scenarios. In an aspect, the length of the codewords may be further optimized according to the Huffman encoding algorithm.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, Ann Tsuey Jiuan Wu, Hailiang Cai
  • EFFICIENT SIGNALING FOR CLOSED-LOOP TRANSMIT DIVERSITY
    Publication number: 20110085537
    Abstract: Techniques for encoding a phase adjustment for a feedback signal in a closed-loop transmit diversity system. In an aspect, codewords for the phase adjustments are chosen according to a variable-length prefix code. The prefix code aspect allows the codewords to be transmitted in sequence on the feedback channel without being separated by “commas” or demarcation symbols. The variable-length aspect provides a variety of coarse and fine phase adjustment quantization step sizes to accommodate multiple different channel scenarios. In an aspect, the length of the codewords may be further optimized according to the Huffman encoding algorithm.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, Ann Tsuey Jiuan Wu, Hailiang Cai