Invention Grant
US07756217B2 Method and system for a robust initialization symbol for digital duplexing
失效
用于数字双工的鲁棒初始化符号的方法和系统
- Patent Title: Method and system for a robust initialization symbol for digital duplexing
- Patent Title (中): 用于数字双工的鲁棒初始化符号的方法和系统
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Application No.: US11312642Application Date: 2005-12-21
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Publication No.: US07756217B2Publication Date: 2010-07-13
- Inventor: Miguel Peeters , Philippe Antoine , Geert Goris
- Applicant: Miguel Peeters , Philippe Antoine , Geert Goris
- 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: H04L27/36
- IPC: H04L27/36
Abstract:
Provided is a method and system for increasing cyclic prefix and cyclic suffix based upon a fast Fourier transform (FFT) and inverse fast Fourier transform (IFFT). The method includes representing at least one of the one or more DMT symbols in frequency domain to produce a frequency domain representation. The frequency domain representation corresponds to a quadrature amplitude modulation (QAM) constellation. Next the QAM constellation is rotated in the frequency domain by changing a characteristic of the DMT symbol as a function of tone index (k), cyclic extension length (CE), inverse fast fourier transform (IFFT) size (N), and pi. Finally, a number of extended symbols are produced to represent the DMT symbol based upon the rotating.
Public/Granted literature
- US20060159192A1 Method and system for a robust initialization symbol for digital duplexing Public/Granted day:2006-07-20
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