Invention Grant
- Patent Title: Channel equalization and carrier recovery method and receiver in high speed wireless communication system
- Patent Title (中): 高速无线通信系统中的信道均衡和载波恢复方法及接收机
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Application No.: US12514837Application Date: 2007-11-16
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Publication No.: US08351494B2Publication Date: 2013-01-08
- Inventor: Dong Kyoo Kim , Young Jin Kang , Jae Young Kim , Kwang Roh Park
- Applicant: Dong Kyoo Kim , Young Jin Kang , Jae Young Kim , Kwang Roh Park
- Applicant Address: KR Daejeon
- Assignee: Electronics and Telecommunications Research Institute
- Current Assignee: Electronics and Telecommunications Research Institute
- Current Assignee Address: KR Daejeon
- Agency: Ladas & Parry LLP
- Priority: KR10-2006-0114123 20061117
- International Application: PCT/KR2007/005773 WO 20071116
- International Announcement: WO2008/060118 WO 20080522
- Main IPC: H04L27/01
- IPC: H04L27/01

Abstract:
Provided are a channel equalization and carrier recovery method and a receiving apparatus thereof. In the method, a receiver of the high speed wireless communication system obtains an initial value of a channel equalization coefficient through non-causal channel estimation in a frequency domain during a preamble transmission section of a packet. High-order QAM signal correction for updating the channel equalization coefficient in a time domain is performed during a data transmission section of the packet. when a payload section starts in the data transmission section of the packet, channel equalization coefficient tracking is performed on the basis of frequency domain decision, and a hard decision of a correction value by the high-order QAM signal correction in the time domain is made to correct carrier phase errors, so that the channel equalization coefficient is updated.
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