Invention Grant
US08750089B2 Method and system for iterative discrete fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques
有权
使用最小均方误差(MMSE)技术的迭代离散傅里叶变换(DFT)信道估计的方法和系统
- Patent Title: Method and system for iterative discrete fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques
- Patent Title (中): 使用最小均方误差(MMSE)技术的迭代离散傅里叶变换(DFT)信道估计的方法和系统
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Application No.: US12732975Application Date: 2010-03-26
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Publication No.: US08750089B2Publication Date: 2014-06-10
- Inventor: Sirikiat Ariyavisitakul , Jun Zheng
- Applicant: Sirikiat Ariyavisitakul , Jun Zheng
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04J11/00
- IPC: H04J11/00 ; H04L25/02 ; H04L25/03 ; H04L1/00

Abstract:
A method and system for iterative discrete Fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques are presented. Aspects of the method and system include a procedure for computing channel estimates in both the time domain and frequency domain (or mixed domain) using an iterative DFT method based on MMSE techniques. One aspect of the method and system may achieve low computational complexity and produce more accurate channel estimate values in low signal to noise ratio (SNR) regimes in comparison to conventional DFT-based channel estimation methods, which utilize least squares (LS) techniques. The method and system disclosed herein may be practiced in connection with a wide range of orthogonal frequency division multiplexing (OFDM) based systems, for example wireless local area networks (WLAN, for example IEEE 802.11 WLAN systems), and LTE systems.
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