Invention Grant
- Patent Title: Methods and apparatus for enhancing channel estimation
- Patent Title (中): 增强信道估计的方法和装置
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Application No.: US13031812Application Date: 2011-02-22
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Publication No.: US08462904B2Publication Date: 2013-06-11
- Inventor: Zhiheng Guo , Hai Wang , Ruiqi Zhang
- Applicant: Zhiheng Guo , Hai Wang , Ruiqi Zhang
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Potomac Patent Group PLLC
- Main IPC: H04B1/10
- IPC: H04B1/10

Abstract:
A noisy frequency-domain channel estimate enhancer includes an over-sampler configured to transform the noisy frequency-domain channel estimate into a time-domain channel estimate that is virtually over-sampled by an integer factor m. The over-sampler is connected to a de-interleaver configured to divide the time-domain channel estimate into m de-interleaved sub-vectors. The de-interleaver is connected to a suppressor configured to suppress noisy taps from each de-interleaved sub-vectors to form m noise suppressed sub-vectors. The suppressor is connected to a selector configured to select a noise suppressed sub-vector associated with a highest signal-to-noise ratio. The selector is connected to a discrete Fourier transformer configured to transform the selected noise suppressed sub-vector into a noise suppressed preliminary frequency-domain channel estimate. The discrete Fourier transformer is connected to a phase-shifter configured to phase-adjust the taps of the noise suppressed preliminary frequency-domain channel estimate to form an enhanced frequency-domain channel estimate.
Public/Granted literature
- US20110206169A1 Methods and Apparatus for Enhancing Channel Estimation Public/Granted day:2011-08-25
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