Patent ID: 11863363
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless communication receiver comprising:
a serial to parallel converter receiving a radio frequency signal and generating N corresponding serial signals;
a Fourier transform device connected to said serial to parallel converter receiving said N corresponding serial signals and converting said N corresponding serial signals from a time domain into a frequency domain;
a EZC root sequence unit generating a set of root sequence signals;
an element-by-element multiply unit connected to said Fourier transform device and said EZC root sequence unit, said element-by-element multiply unit forming a set of products including a product of each of said frequency domain signals from said Fourier transform device and a corresponding root sequence signal;
an NSRS-length IDFT unit connected to said element-by-element multiply unit performing a group cyclic-shift de-multiplexing of said products employing a sounding reference symbol Orthogonal Frequency Division Multiplexing Orthogonal Frequency Division Multiple Access symbol structure and a Constant Amplitude Zero Auto-Correlation sequence to compute an impulse response for each multiplexed channel through a frequency-domain computed periodic correlation; and
a discrete Fourier transform unit connected to said IDFT unit and receiving cyclic shift de-multiplexing signals to convert them back to frequency-domain.