Sounding reference signal processing for LTE
AssigneeTexas Instruments Incorporated
InventorsPierre Bertrand, Anthony Edet Ekpenyong
Life of this patent
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Abstract
A wireless communication receiver including a serial to parallel converter receiving an radio frequency signal, a fast Fourier transform device connected to said serial to parallel converter converting NFFT corresponding serial signals into a frequency domain; an EZC root sequence unit generating a set of root sequence signals; an element-by-element multiply unit forming a set of products including a product of each of said frequency domain signals from said fast Fourier transform device and a corresponding root sequence signal, an NSRS-length IDFT unit performing a group cyclic-shift de-multiplexing of the products and a discrete Fourier transform unit converting connected cyclic shift de-multiplexing signals back to frequency-domain.
Claims12
A wireless communication receiver comprising:
- a serial to parallel converter;
- a Fourier transform device connected to said serial to parallel converter;
- an extended Zadoff-Chu (EZC) root sequence unit configured to generate 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 configured to generate a set of products including a product of each of a plurality of frequency domain signals from said Fourier transform device and a corresponding root sequence signal of said set of root sequence signals;
- an inverse discrete Fourier transform (IDFT) unit connected to said element-by-element multiply unit and configured to perform group cyclic-shift de-multiplexing of said set of products;
- and
- a discrete Fourier transform (DFT) unit connected to said IDFT unit and configured to receive and convert cyclic-shift de-multiplexing signals back to frequency-domain.
Dependencies are inferred from the claim text.