Invention Grant
US08351494B2 Channel equalization and carrier recovery method and receiver in high speed wireless communication system 有权
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

Channel equalization and carrier recovery method and receiver in high speed wireless communication system
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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