Patent ID: 9001641
Filing Date: 2015-04-07
Classification: H04J,H04L

Abstract:
1. A wireless communication receiver comprising; a serial-to-parallel converter receiving a time sample sequence and generating parallel signals; a fast Fourier transform (FFT device connected to said serial-to-parallel converter and converting said signals from a time domain into a frequency domain; an Extended Zadoff-Chu (EZC) root sequence unit generating a set of root sequence signals; an element-by-element multiply unit connected to said FFT device and said EZC root sequence unit, said element-by-element multiply unit forming a set of products Y including a product of each of said frequency domain signals from said FFT device and a complex conjugate of one of said corresponding root sequence signals X; an Inverse Discrete Fourier Transform (IDFT) unit connected to said element-by-element multiply unit performing a group cyclic-shift de-multiplexing of said products to compute an impulse response for each multiplexed channel; and a discrete Fourier transform unit connected to said IDFT unit to convert said impulse responses back to frequency domain.