Channel estimation device and related method of an orthogonal frequency division multiplexing system
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United States of America Patent
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Jul 12, 2011
Grant Date -
Jul 16, 2009
app pub date -
Jan 16, 2008
filing date -
Jan 16, 2008
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Abstract
A channel estimation device for orthogonal frequency division multiplexing system and related method. The transmitting end transmits error detection signal of subcarrier, and the channel estimation is decided by whether the received signal at the receiving end is correct. Furthermore, in order to reduce the calculation complexity of the channel estimation, least square estimation is performed first, then MMSE estimation is performed to obtain more precise channel estimation, and singular value decomposition is utilized to reduce the calculation complexity of MMSE. The above-mentioned channel estimation method can obtain a better system efficiency in fast time variant channel.
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