发明名称 |
Apparatus and method for channel estimation in an SDMA-OFDM system |
摘要 |
Provided is a channel estimation apparatus and method in a broadband wireless communications system using a smart antenna are provided. In the channel estimation apparatus, an FFT processor converts a received time-domain signal into a frequency-domain signal by FFT-processing the received time-domain signal. A channel acquirer estimates a first channel information for an SDMA user using a preamble signal allocated to the SDMA user in the frequency-domain signal. A channel tracker estimates a second channel information for the SDMA user using pilots in a data area allocated to the SDMA user in the frequency-domain signal. A channel estimator estimates a final channel information by weighting the first channel information and the second channel information according to a channel change rate.
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申请公布号 |
US7647073(B2) |
申请公布日期 |
2010.01.12 |
申请号 |
US20060368532 |
申请日期 |
2006.03.07 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
SUNG SANG-HOON;KIM JEE-HYUN;CHOI EUN-SUN |
分类号 |
H04M1/00 |
主分类号 |
H04M1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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