Invention Grant
US07936810B2 Delayed combining of frequency-domain equalized wireless channels with large delay-spreads 有权
频域均衡无线信道与大延迟传播的延迟组合

  • Patent Title: Delayed combining of frequency-domain equalized wireless channels with large delay-spreads
  • Patent Title (中): 频域均衡无线信道与大延迟传播的延迟组合
  • Application No.: US11518559
    Application Date: 2006-09-08
  • Publication No.: US07936810B2
    Publication Date: 2011-05-03
  • Inventor: Yuan LiToshio Nagata
  • Applicant: Yuan LiToshio Nagata
  • Applicant Address: US TX Dallas
  • Assignee: Texas Instruments Incorporated
  • Current Assignee: Texas Instruments Incorporated
  • Current Assignee Address: US TX Dallas
  • Agent Lawrence J. Bassuk; W. James Brady; Frederick J. Telecky, Jr.
  • Main IPC: H03H7/30
  • IPC: H03H7/30
Delayed combining of frequency-domain equalized wireless channels with large delay-spreads
Abstract:
Methods and apparatus to perform frequency-domain equalization in high-speed downlink packet access (HSDPA) receivers for wireless channels with large delay-spreads are disclosed. An example method comprises computing a first frequency-domain equalizer (FDE) coefficient for a first set of multipaths, computing a second FDE coefficient for a second set of multipaths, computing a first equalized signal by equalizing a received code division multiple access (CDMA) signal with the first FDE coefficient, computing a second equalized signal by equalizing the received CDMA signal with the second FDE coefficient, delaying the first equalized signal by a delay difference between the first and the second sets, and combining the delayed first equalized signal and the second equalized signal.
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