Invention Grant
US08547988B2 Communications method employing orthonormal time-frequency shifting and spectral shaping 有权
采用正交时频移频和频谱整形的通信方法

  • Patent Title: Communications method employing orthonormal time-frequency shifting and spectral shaping
  • Patent Title (中): 采用正交时频移频和频谱整形的通信方法
  • Application No.: US13117124
    Application Date: 2011-05-26
  • Publication No.: US08547988B2
    Publication Date: 2013-10-01
  • Inventor: Ronny HadaniSelim Shlomo Rakib
  • Applicant: Ronny HadaniSelim Shlomo Rakib
  • Agent Stephen E. Zweig
  • Main IPC: H04J4/00
  • IPC: H04J4/00
Communications method employing orthonormal time-frequency shifting and spectral shaping
Abstract:
A wireless combination time, frequency and spectral shaping communications method that transmits data in convolution unit matrices (data frames) of N×N (N2), where generally either all N2 data symbols or elements are received over N spreading time intervals (each composed of N time slices), or none are. To transmit, each data element is assigned a unique waveform which is derived from a basic waveform of duration N time slices over one spreading time interval, where each basic waveform has a data element specific combination of a time and frequency cyclic shift. At the receiver, the received signal is correlated with the set of all N2 waveforms previously assigned to each data element by a transmitter for that specific time spreading interval, producing a unique correlation score for each one of the N2 data elements. The scores are summed over each data element, and this summation reproduces the data frame.
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